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• Why does my macbook pro have long ping times over wifi?

  - by randynov

  I have been having problems connecting with my wifi. It is weird, the ping times to the router (<30 feet away) seem to surge, often getting over 10s before slowly coming back down. You can see the trend below. I'm on a macbook pro and have done the normal stuff (reset the pram and smc, changed wireless channels, etc.). It happens across different routers, so I think it must be my laptop, but I don't know what it could be. The RSSI value hovers around -57, but I've seen the transmit rate flip between 0, 48 & 54. The signal strength is ~60% with 9% noise. Currently, there are 17 other wireless networks in range, but only one in the same channel. 1 - How can I figure out what's going on? 2 - How can I correct the situation? TIA! Randall PING 192.168.1.1 (192.168.1.1): 56 data bytes 64 bytes from 192.168.1.1: icmp_seq=0 ttl=254 time=781.107 ms 64 bytes from 192.168.1.1: icmp_seq=1 ttl=254 time=681.551 ms 64 bytes from 192.168.1.1: icmp_seq=2 ttl=254 time=610.001 ms 64 bytes from 192.168.1.1: icmp_seq=3 ttl=254 time=544.915 ms 64 bytes from 192.168.1.1: icmp_seq=4 ttl=254 time=547.622 ms 64 bytes from 192.168.1.1: icmp_seq=5 ttl=254 time=468.914 ms 64 bytes from 192.168.1.1: icmp_seq=6 ttl=254 time=237.368 ms 64 bytes from 192.168.1.1: icmp_seq=7 ttl=254 time=229.902 ms 64 bytes from 192.168.1.1: icmp_seq=8 ttl=254 time=11754.151 ms 64 bytes from 192.168.1.1: icmp_seq=9 ttl=254 time=10753.943 ms 64 bytes from 192.168.1.1: icmp_seq=10 ttl=254 time=9754.428 ms 64 bytes from 192.168.1.1: icmp_seq=11 ttl=254 time=8754.199 ms 64 bytes from 192.168.1.1: icmp_seq=12 ttl=254 time=7754.138 ms 64 bytes from 192.168.1.1: icmp_seq=13 ttl=254 time=6754.159 ms 64 bytes from 192.168.1.1: icmp_seq=14 ttl=254 time=5753.991 ms 64 bytes from 192.168.1.1: icmp_seq=15 ttl=254 time=4754.068 ms 64 bytes from 192.168.1.1: icmp_seq=16 ttl=254 time=3753.930 ms 64 bytes from 192.168.1.1: icmp_seq=17 ttl=254 time=2753.768 ms 64 bytes from 192.168.1.1: icmp_seq=18 ttl=254 time=1753.866 ms 64 bytes from 192.168.1.1: icmp_seq=19 ttl=254 time=753.592 ms 64 bytes from 192.168.1.1: icmp_seq=20 ttl=254 time=517.315 ms 64 bytes from 192.168.1.1: icmp_seq=37 ttl=254 time=1.315 ms 64 bytes from 192.168.1.1: icmp_seq=38 ttl=254 time=1.035 ms 64 bytes from 192.168.1.1: icmp_seq=39 ttl=254 time=4.597 ms 64 bytes from 192.168.1.1: icmp_seq=21 ttl=254 time=18010.681 ms 64 bytes from 192.168.1.1: icmp_seq=22 ttl=254 time=17010.449 ms 64 bytes from 192.168.1.1: icmp_seq=23 ttl=254 time=16010.430 ms 64 bytes from 192.168.1.1: icmp_seq=24 ttl=254 time=15010.540 ms 64 bytes from 192.168.1.1: icmp_seq=25 ttl=254 time=14010.450 ms 64 bytes from 192.168.1.1: icmp_seq=26 ttl=254 time=13010.175 ms 64 bytes from 192.168.1.1: icmp_seq=27 ttl=254 time=12010.282 ms 64 bytes from 192.168.1.1: icmp_seq=28 ttl=254 time=11010.265 ms 64 bytes from 192.168.1.1: icmp_seq=29 ttl=254 time=10010.285 ms 64 bytes from 192.168.1.1: icmp_seq=30 ttl=254 time=9010.235 ms 64 bytes from 192.168.1.1: icmp_seq=31 ttl=254 time=8010.399 ms 64 bytes from 192.168.1.1: icmp_seq=32 ttl=254 time=7010.144 ms 64 bytes from 192.168.1.1: icmp_seq=33 ttl=254 time=6010.113 ms 64 bytes from 192.168.1.1: icmp_seq=34 ttl=254 time=5010.025 ms 64 bytes from 192.168.1.1: icmp_seq=35 ttl=254 time=4009.966 ms 64 bytes from 192.168.1.1: icmp_seq=36 ttl=254 time=3009.825 ms 64 bytes from 192.168.1.1: icmp_seq=40 ttl=254 time=16000.676 ms 64 bytes from 192.168.1.1: icmp_seq=41 ttl=254 time=15000.477 ms 64 bytes from 192.168.1.1: icmp_seq=42 ttl=254 time=14000.388 ms 64 bytes from 192.168.1.1: icmp_seq=43 ttl=254 time=13000.549 ms 64 bytes from 192.168.1.1: icmp_seq=44 ttl=254 time=12000.469 ms 64 bytes from 192.168.1.1: icmp_seq=45 ttl=254 time=11000.332 ms 64 bytes from 192.168.1.1: icmp_seq=46 ttl=254 time=10000.339 ms 64 bytes from 192.168.1.1: icmp_seq=47 ttl=254 time=9000.338 ms 64 bytes from 192.168.1.1: icmp_seq=48 ttl=254 time=8000.198 ms 64 bytes from 192.168.1.1: icmp_seq=49 ttl=254 time=7000.388 ms 64 bytes from 192.168.1.1: icmp_seq=50 ttl=254 time=6000.217 ms 64 bytes from 192.168.1.1: icmp_seq=51 ttl=254 time=5000.084 ms 64 bytes from 192.168.1.1: icmp_seq=52 ttl=254 time=3999.920 ms 64 bytes from 192.168.1.1: icmp_seq=53 ttl=254 time=3000.010 ms 64 bytes from 192.168.1.1: icmp_seq=54 ttl=254 time=1999.832 ms 64 bytes from 192.168.1.1: icmp_seq=55 ttl=254 time=1000.072 ms 64 bytes from 192.168.1.1: icmp_seq=58 ttl=254 time=1.125 ms 64 bytes from 192.168.1.1: icmp_seq=59 ttl=254 time=1.070 ms 64 bytes from 192.168.1.1: icmp_seq=60 ttl=254 time=2.515 ms

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• DNS server not functioning correctly

  - by Shamit Shrestha

  I have setup a DNS server which isnt working properly. My domain is accswift.com which has glued to two name servers ns1.accswift.com and ns2.accswift.com for the same IP address - 203.78.164.18. On domain end everything should be fine. Please check -http://www.intodns.com/accswift.com I am sure its the problem with the linux server. Can anyone help me find where the problem is for me? Below is the settings that I have in the server. ====================== DIG [root@accswift ~]# dig accswift.com ; << DiG 9.8.2rc1-RedHat-9.8.2-0.17.rc1.el6_4.6 << accswift.com ;; global options: +cmd ;; Got answer: ;; -HEADER<<- opcode: QUERY, status: NOERROR, id: 11275 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2 ;; QUESTION SECTION: ;accswift.com. IN A ;; ANSWER SECTION: accswift.com. 38400 IN A 203.78.164.18 ;; AUTHORITY SECTION: accswift.com. 38400 IN NS ns1.accswift.com. accswift.com. 38400 IN NS ns2.accswift.com. ;; ADDITIONAL SECTION: ns1.accswift.com. 38400 IN A 203.78.164.18 ns2.accswift.com. 38400 IN A 203.78.164.18 ;; Query time: 1 msec ;; SERVER: 127.0.0.1#53(127.0.0.1) ;; WHEN: Wed Nov 6 20:12:16 2013 ;; MSG SIZE rcvd: 114 ============== IP Tables settings vi /etc/sysconfig/iptables *filter :FORWARD ACCEPT [0:0] :INPUT ACCEPT [0:0] :OUTPUT ACCEPT [0:0] -A FORWARD -o eth0 -j LOG --log-level 7 --log-prefix BANDWIDTH_OUT: -A FORWARD -i eth0 -j LOG --log-level 7 --log-prefix BANDWIDTH_IN: -A OUTPUT -o eth0 -j LOG --log-level 7 --log-prefix BANDWIDTH_OUT: -A INPUT -i eth0 -j LOG --log-level 7 --log-prefix BANDWIDTH_IN: -A INPUT -p udp -m udp --sport 53 -j ACCEPT -A OUTPUT -p udp -m udp --dport 53 -j ACCEPT COMMIT Completed on Fri Sep 20 04:20:33 2013 Generated by webmin *mangle :FORWARD ACCEPT [0:0] :INPUT ACCEPT [0:0] :OUTPUT ACCEPT [0:0] :PREROUTING ACCEPT [0:0] :POSTROUTING ACCEPT [0:0] COMMIT Completed Generated by webmin *nat :OUTPUT ACCEPT [0:0] :PREROUTING ACCEPT [0:0] :POSTROUTING ACCEPT [0:0] COMMIT ====DNS settings vi /var/named/accswift.com.host $ttl 38400 @ IN SOA ns1.accswift.com. root.ns1.accswift.com. ( 1382936091 10800 3600 604800 38400 ) @ IN NS ns1.accswift.com. @ IN NS ns2.accswift.com. accswift.com. IN A 203.78.164.18 accswift.com. IN NS ns1.accswift.com. www.accswift.com. IN A 203.78.164.18 ftp.accswift.com. IN A 203.78.164.18 m.accswift.com. IN A 203.78.164.18 ns1 IN A 203.78.164.18 ns2 IN A 203.78.164.18 localhost.accswift.com. IN A 127.0.0.1 webmail.accswift.com. IN A 203.78.164.18 admin.accswift.com. IN A 203.78.164.18 mail.accswift.com. IN A 203.78.164.18 accswift.com. IN MX 5 mail.accswift.com. ====Named.conf vi /etc/named.conf options { listen-on port 53 { 127.0.0.1; }; listen-on-v6 port 53 { ::1; }; directory "/var/named"; dump-file "/var/named/data/cache_dump.db"; statistics-file "/var/named/data/named_stats.txt"; memstatistics-file "/var/named/data/named_mem_stats.txt"; allow-query { any; }; recursion yes; allow-recursion { localhost; 192.168.2.0/24; }; dnssec-enable yes; dnssec-validation yes; dnssec-lookaside auto; /* Path to ISC DLV key */ bindkeys-file "/etc/named.iscdlv.key"; managed-keys-directory "/var/named/dynamic"; forward first; forwarders {192.168.1.1;}; }; logging { channel default_debug { file "data/named.run"; severity dynamic; }; }; zone "." IN { type hint; file "named.ca"; }; include "/etc/named.rfc1912.zones"; include "/etc/named.root.key"; zone "accswift.com" { type master; file "/var/named/accswift.com.hosts"; allow-transfer { 127.0.0.1; localnets; 208.73.211.69; }; }; zone "ns1.accswift.com" { type master; file "/var/named/ns1.accswift.com.hosts"; }; ==================================== Can anybody find any flaw in this? I am still unable to reach accswift.com from any other ISP. But it is browsable from the same network though. Thanks in advance.

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• Again WPA Connection problem even after changed to latest version ..please help

  - by Renjith G

  I am using hostapd, wireless tools with madwifi for my wireless ap in my board. The WEP, WPA-PSK connections and communications between my board with linux and my desktop PC, Windows XP SP2 (with Olitec USB wireless) are fine. But when I configured the WPA type, the connection seems established but shows the status "TKIP - Key Absent" in the security dialog box. Anyone faced this problem? Am attaching the conf files and the connection status. In the AP side am complaining . I am using the in built radius server conf with the hostapd 0.4.7 hostapd.conf interface=ath0 driver=madwifi logger_syslog=0 logger_syslog_level=0 logger_stdout=0 logger_stdout_level=0 debug=0 eapol_key_index_workaround=1 dump_file=/tmp/hostapd.dump.0.0 ssid=Renjith G wpa wpa=1 wpa_passphrase=mypassphrase wpa_key_mgmt=WPA-EAP wpa_pairwise=TKIP CCMP wpa_group_rekey=600 macaddr_acl=2 /* commented */ ieee8021x=1 /* commented */ eap_authenticator=1 own_ip_addr=172.16.25.1 nas_identifier=renjithg.com auth_server_addr=172.16.25.1 auth_server_port=1812 auth_server_shared_secret=key1 ca_cert=/flash1/ca.crt server_cert=/flash1/server.crt eap_user_file=/etc/hostapd.eap_user hostapd.eap_user "*@renjithg.com" TLS And the commands am using are wlanconfig ath0 create wlandev wifi0 wlanmode ap iwconfig ath0 essid Renjith channel 6 ifconfig ath0 192.168.25.1 netmask 255.255.255.0 up hostapd -ddd /etc/hostapd.conf Please correct if am wrong .. Also am getting the debug messages on my AP when am connecting in my windows machine through WPA ~/wlanexe # ./hostapd -ddd /etc/hostapd.conf Configuration file: /etc/hostapd.conf Line 18: obsolete eap_authenticator used; this has been renamed to eap_server madwifi_set_iface_flags: dev_up=0 Using interface ath0 with hwaddr 00:0b:6b:33:8c:30 and ssid 'Renjith G wpa' madwifi_set_ieee8021x: enabled=1 madwifi_configure_wpa: group key cipher=1 madwifi_configure_wpa: pairwise key ciphers=0xa madwifi_configure_wpa: key management algorithms=0x1 madwifi_configure_wpa: rsn capabilities=0x0 madwifi_configure_wpa: enable WPA= 0x1 madwifi_set_iface_flags: dev_up=1 madwifi_set_privacy: enabled=1 WPA: group state machine entering state GTK_INIT GMK - hexdump(len=32): 9c 77 cd 38 5a 60 3b 16 8a 22 90 e8 65 b3 c2 86 40 5c be c3 dd 84 3e df 58 1d 16 61 1d 13 d1 f2 GTK - hexdump(len=32): 02 78 d7 d3 5d 15 e3 89 9c 62 a8 fe 8a 0f 40 28 ba dc cd bc 07 f4 59 88 1c 08 84 2b 49 3d e2 32 WPA: group state machine entering state SETKEYSDONE madwifi_set_key: alg=TKIP addr=00:00:00:00:00:00 key_idx=1 Flushing old station entries madwifi_sta_deauth: addr=ff:ff:ff:ff:ff:ff reason_code=3 Deauthenticate all stations l2_packet_receive - recvfrom: Network is down Wireless event: cmd=0x8c03 len=20 New STA WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state INITIALIZE madwifi_del_key: addr=00:0a:78:a0:0b:09 key_idx=0 WPA: 00:0a:78:a0:0b:09 WPA_PTK_GROUP entering state IDLE WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state AUTHENTICATION WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state AUTHENTICATION2 IEEE 802.1X: 4 bytes from 00:0a:78:a0:0b:09 IEEE 802.1X: version=1 type=1 length=0 Wireless event: cmd=0x8c04 len=20 madwifi_del_key: addr=00:0a:78:a0:0b:09 key_idx=0 ioctl[unknown???]: Invalid argument WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state DISCONNECTED WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state INITIALIZE madwifi_del_key: addr=00:0a:78:a0:0b:09 key_idx=0 ioctl[unknown???]: Invalid argument Wireless event: cmd=0x8c03 len=20 New STA WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state INITIALIZE madwifi_del_key: addr=00:0a:78:a0:0b:09 key_idx=0 WPA: 00:0a:78:a0:0b:09 WPA_PTK_GROUP entering state IDLE WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state AUTHENTICATION WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state AUTHENTICATION2 IEEE 802.1X: 4 bytes from 00:0a:78:a0:0b:09 IEEE 802.1X: version=1 type=1 length=0 < Register Fail < Register Fail Wireless event: cmd=0x8c04 len=20 madwifi_del_key: addr=00:0a:78:a0:0b:09 key_idx=0 ioctl[unknown???]: Invalid argument WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state DISCONNECTED WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state INITIALIZE madwifi_del_key: addr=00:0a:78:a0:0b:09 key_idx=0 ioctl[unknown???]: Invalid argument Wireless event: cmd=0x8c03 len=20 New STA WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state INITIALIZE madwifi_del_key: addr=00:0a:78:a0:0b:09 key_idx=0 WPA: 00:0a:78:a0:0b:09 WPA_PTK_GROUP entering state IDLE WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state AUTHENTICATION WPA: 00:0a:78:a0:0b:09 WPA_PTK entering state AUTHENTICATION2 IEEE 802.1X: 4 bytes from 00:0a:78:a0:0b:09 IEEE 802.1X: version=1 type=1 length=0 NOW am getting the following error message with latest tools. *This is the latest error messages..please refer this only..* ~/wlanexe # ./hostapd -ddd /etc/hostapd.conf TLS: Trusted root certificate(s) loaded madwifi_set_iface_flags: dev_up=0 madwifi_set_privacy: enabled=0 BSS count 1, BSSID mask ff:ff:ff:ff:ff:ff (0 bits) Flushing old station entries madwifi_sta_deauth: addr=ff:ff:ff:ff:ff:ff reason_code=3 ioctl[IEEE80211_IOCTL_SETMLME]: Invalid argument madwifi_sta_deauth: Failed to deauth STA (addr ff:ff:ff:ff:ff:ff reason 3) Could not connect to kernel driver. Deauthenticate all stations madwifi_sta_deauth: addr=ff:ff:ff:ff:ff:ff reason_code=2 ioctl[IEEE80211_IOCTL_SETMLME]: Invalid argument madwifi_sta_deauth: Failed to deauth STA (addr ff:ff:ff:ff:ff:ff reason 2) madwifi_set_privacy: enabled=0 madwifi_del_key: addr=00:00:00:00:00:00 key_idx=0 madwifi_del_key: addr=00:00:00:00:00:00 key_idx=1 madwifi_del_key: addr=00:00:00:00:00:00 key_idx=2 madwifi_del_key: addr=00:00:00:00:00:00 key_idx=3 Using interface ath0 with hwaddr 00:0b:6b:33:8c:30 and ssid 'RenjithGwpa' SSID - hexdump_ascii(len=11): 52 65 6e 6a 69 74 68 47 77 70 61 RenjithGwpa PSK (ASCII passphrase) - hexdump_ascii(len=12): 6d 79 70 61 73 73 70 68 72 61 73 65 mypassphrase PSK (from passphrase) - hexdump(len=32): a6 55 3e 76 94 8b d9 81 a1 22 5e 24 29 83 33 86 11 a8 7e 93 19 7c a9 ab ab cc 12 58 37 e5 35 b6 RADIUS local address: 172.16.25.1:1024 madwifi_set_ieee8021x: enabled=1 madwifi_configure_wpa: group key cipher=1 madwifi_configure_wpa: pairwise key ciphers=0xa madwifi_configure_wpa: key management algorithms=0x1 madwifi_configure_wpa: rsn capabilities=0x0 madwifi_configure_wpa: enable WPA=0x1 WPA: group state machine entering state GTK_INIT (VLAN-ID 0) GMK - hexdump(len=32): [REMOVED] GTK - hexdump(len=32): [REMOVED] WPA: group state machine entering state SETKEYSDONE (VLAN-ID 0) madwifi_set_key: alg=TKIP addr=00:00:00:00:00:00 key_idx=1 madwifi_set_privacy: enabled=1 madwifi_set_iface_flags: dev_up=1 ath0: Setup of interface done. l2_packet_receive - recvfrom: Network is down Wireless event: cmd=0x8b1a len=24 Wireless event: cmd=0x8c03 len=20 New STA ioctl[unknown???]: Invalid argument madwifi_process_wpa_ie: Failed to get WPA/RSN IE Failed to get WPA/RSN information element. Data frame from not associated STA 00:0a:78:a0:0b:09 Wireless event: cmd=0x8c04 len=20 Wireless event: cmd=0x8c03 len=20 New STA ioctl[unknown???]: Invalid argument madwifi_process_wpa_ie: Failed to get WPA/RSN IE Failed to get WPA/RSN information element. Data frame from not associated STA 00:0a:78:a0:0b:09 Data frame from not associated STA 00:0a:78:a0:0b:09 Data frame from not associated STA 00:0a:78:a0:0b:09 Wireless event: cmd=0x8c04 len=20 Wireless event: cmd=0x8c03 len=20 New STA ioctl[unknown???]: Invalid argument madwifi_process_wpa_ie: Failed to get WPA/RSN IE Failed to get WPA/RSN information element. Data frame from not associated STA 00:0a:78:a0:0b:09

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• Windows 7 Machine Makes Router Drop -All- Wireless Connections [closed]

  - by Hammer Bro.

  Note: I accidentally originally posted this question over at SuperUser, and I still think the issue is caused by some low-level networking practice of Windows 7, but I think the expertise here would be more apt to figuring it out. Apologies for the cross-post. Some background: My home network consists of my Desktop, a two-month old Windows 7 (x64) machine which is online most frequently (N-spec), as well as three other Windows XP laptops (all G) that only connect every now and then (one for work, one for Netflix, and the other for infrequent regular laptop uses). I used to have a Belkin F5D8236-4 wireless router, and everything worked great. A week ago, however, I found out that the Belkin absolutely in no way would establish a VPN connection, something that has become important for work. So I bought a Netgear WNR3500v2/U/L. The wireless was acting a little sketchy at first for just the Windows 7 machine, but I thought it had something to do with 802.11N and I was in a hurry so I just fished up an ethernet cable and disabled the computer's wireless. It has now become apparent, though, that whenever the Windows 7 machine is connected to the router, all wireless connections become unstable. I was using my work laptop for a solid six hours today with no trouble, having multiple SSH connections open over VPN and streaming internet radio in the background. Then, within two minutes of turning on this Windows 7 box, I had lost all connectivity over the wireless. And I was two feet away from the router. The same sort of thing happens on all of the other laptops -- Netflix can be playing stuff all weekend, but if I come up here and do things on this (W7) computer, the streaming will be dead within ten minutes. So here are my basic observations: If the Windows 7 machine is off, then all connections will have a Signal Strength of Very Good or Excellent and a Speed of 48-54 Mbps for an indefinite amount of time. Shortly after the Windows 7 machine is turned on, all wireless connections will experience a consistent decline in Speed down to 1.0 Mbps, eventually losing their connection entirely. These machines will continue to maintain 70% signal strength, as observed by themselves and router. Once dropped, a wireless connection will have difficulty reconnecting. And, if a connection manages to become established, it will quickly drop off again. The Windows 7 machine itself will continue to function just fine if it's using a wired connection, although it will experience these same issues over the wireless. All of the drivers and firmwares are up to date, and this happened both with the stock Netgear firmware as well as the (current) DD-WRT. What I've tried: Making sure each computer is being assigned a distinct IP. (They are.) Disabling UPnP and Stateful Packet Inspection on the router. Disabling Network Sharing, SSDP Discovery, TCP/IP NetBios Helper and Computer Browser services on the Windows 7 machine. Disabling QoS Packet Scheduler, IPv6, and Link Layer Topology Discovery options on my ethernet controller (leaving only Client for Microsoft Networks, File and Printer Sharing, and IPv4 enabled). What I think: It seems awfully similar to the problems discussed in detail at http://social.msdn.microsoft.com/Forums/en/wsk/thread/1064e397-9d9b-4ae2-bc8e-c8798e591915 (which was both the most relevant and concrete information I could dig up on the internet). I still think that something the Windows 7 IP stack (or just Operating System itself) is doing is giving the router fits. However, I could be wrong, because I have two key differences. One is that most instances of this problem are reported as the entire router dying or restarting, and mine still works just fine over the wired connection. The other is that it's a new router, tested with both the factory firmware and the (I assume) well-maintained DD-WRT project. Even if Windows 7 is still secretly sending IPv6 packets or the TCP Window Scaling implementation that I hear Vista caused some trouble with (even though I've tried my best to disable anything fancy), this router should support those functions. I don't want to get a new or a replacement router unless someone can convince me that this is a defective unit. But the problem seems too specific and predictable by my instincts to be a hardware hiccup. And I don't want to deal with the inevitable problems that always seem to take half a day to resolve when getting a new router, since I'm frantically working (including tomorrow) to complete a project by next week's deadline. Plus, I think in the worst case scenario, I could keep this router connected directly to the modem, disable its wireless entirely, and connect the old Belkin to it directly. That should allow me to still use VPN (although I'll have to plug my work laptop directly into that router), and then maintain wireless connections for all of the other computers. But that feels so wrong to me. Anyone have any ideas what the cause and possible solution could be? Clarifications: The Windows 7 machine is directly connected via an ethernet cable to the router for everything above. But while it is online, all other computers' wireless connections become unusable. It is not an issue of signal strength or interference -- no other devices within scanning range are using Channel 1, and the problem will affect computers that are literally feet away from the router with 95% signal strength.

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• Reverse lookup SERVFAIL

  - by Quan Tran

  I just set up a DNS server and a web server using Virtualbox. The IP address of the DNS server is 192.168.56.101 and the web server 192.168.56.102. Here are my configuration files for the DNS server: named.conf: // // named.conf // // Provided by Red Hat bind package to configure the ISC BIND named(8) DNS // server as a caching only nameserver (as a localhost DNS resolver only). // // See /usr/share/doc/bind*/sample/ for example named configuration files. // options { directory "/var/named"; dump-file "/var/named/data/cache_dump.db"; statistics-file "/var/named/data/named_stats.txt"; memstatistics-file "/var/named/data/named_mem_stats.txt"; //query-source address * port 53; //forward first; forwarders { 8.8.8.8; 8.8.4.4; }; listen-on port 53 { 127.0.0.1; 192.168.56.0/24; }; allow-query { localhost; 192.168.56.0/24; }; recursion yes; dnssec-enable yes; dnssec-validation yes; dnssec-lookaside auto; /* Path to ISC DLV key */ bindkeys-file "/etc/named.iscdlv.key"; managed-keys-directory "/var/named/dynamic"; }; logging { channel default_debug { file "data/named.run"; severity debug 10; print-category yes; print-time yes; print-severity yes; }; }; zone "quantran.com" in { type master; file "named.quantran.com"; }; zone "56.168.192.in-addr.arpa" in { type master; file "named.192.168.56"; allow-update { none; }; }; include "/etc/named.rfc1912.zones"; include "/etc/named.root.key"; named.quantran.com: $TTL 86400 quantran.com. IN SOA dns1.quantran.com. root.quantran.com. ( 100 ; serial 3600 ; refresh 600 ; retry 604800 ; expire 86400 ) IN NS dns1.quantran.com. dns1.quantran.com. IN A 192.168.56.101 www.quantran.com. IN A 192.168.56.102 named.192.168.56: $TTL 86400 $ORIGIN 56.168.192.in-addr.arpa. @ IN SOA dns1.quantran.com. root.quantran.com. ( 100 ; serial 3600 ; refresh 600 ; retry 604800 ; expire 86400 ) ; minimum IN NS dns1.quantran.com. 101.56.168.192.in-addr.arpa. IN PTR dns1.quantran.com. 102 IN PTR www.quantran.com. When I try a normal lookup from the host (I configured so that the only nameserver the host uses is the DNS server 192.168.56.101): quan@quantran:~$ host www.quantran.com www.quantran.com has address 192.168.56.102 quan@quantran:~$ host dns1.quantran.com dns1.quantran.com has address 192.168.56.101 But when I try a reverse lookup: quan@quantran:~$ host -v 192.168.56.101 192.168.56.101 Trying "101.56.168.192.in-addr.arpa" Using domain server: Name: 192.168.56.101 Address: 192.168.56.101#53 Aliases: Host 101.56.168.192.in-addr.arpa not found: 2(SERVFAIL) Received 45 bytes from 192.168.56.101#53 in 0 ms quan@quantran:~$ host -v 192.168.56.102 192.168.56.101 Trying "102.56.168.192.in-addr.arpa" Using domain server: Name: 192.168.56.101 Address: 192.168.56.101#53 Aliases: Host 102.56.168.192.in-addr.arpa not found: 2(SERVFAIL) Received 45 bytes from 192.168.56.101#53 in 0 ms So why can't I perform a reverse lookup? Anything wrong with the zone configuration files? Thanks in advance :) Oh, here is the output from the log file /var/named/data/named.run when I perform the reverse lookup: quan@quantran:~$ host 192.168.56.102 192.168.56.101 Using domain server: Name: 192.168.56.101 Address: 192.168.56.101#53 Aliases: Host 102.56.168.192.in-addr.arpa not found: 2(SERVFAIL) /var/named/data/named.run: 02-Jun-2014 15:18:11.950 client: debug 3: client 192.168.56.1#51786: UDP request 02-Jun-2014 15:18:11.950 client: debug 5: client 192.168.56.1#51786: using view '_default' 02-Jun-2014 15:18:11.950 security: debug 3: client 192.168.56.1#51786: request is not signed 02-Jun-2014 15:18:11.950 security: debug 3: client 192.168.56.1#51786: recursion available 02-Jun-2014 15:18:11.950 client: debug 3: client 192.168.56.1#51786: query 02-Jun-2014 15:18:11.950 client: debug 10: client 192.168.56.1#51786: ns_client_attach: ref = 1 02-Jun-2014 15:18:11.950 query-errors: debug 1: client 192.168.56.1#51786: query failed (SERVFAIL) for 102.56.168.192.in-addr.arpa/IN/PTR at query.c:5428 02-Jun-2014 15:18:11.950 client: debug 3: client 192.168.56.1#51786: error 02-Jun-2014 15:18:11.950 client: debug 3: client 192.168.56.1#51786: send 02-Jun-2014 15:18:11.950 client: debug 3: client 192.168.56.1#51786: sendto 02-Jun-2014 15:18:11.951 client: debug 3: client 192.168.56.1#51786: senddone 02-Jun-2014 15:18:11.951 client: debug 3: client 192.168.56.1#51786: next 02-Jun-2014 15:18:11.951 client: debug 10: client 192.168.56.1#51786: ns_client_detach: ref = 0 02-Jun-2014 15:18:11.951 client: debug 3: client 192.168.56.1#51786: endrequest 02-Jun-2014 15:18:11.951 client: debug 3: client @0xb537e008: udprecv Also, I made some changes to the log section in named.conf.

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• Weighted round robins via TTL - possible?

  - by Joe Hopfgartner

  I currently use DNS round robin for load balancing, which works great. The records look like this (I have a ttl of 120 seconds) ;; ANSWER SECTION: orion.2x.to. 116 IN A 80.237.201.41 orion.2x.to. 116 IN A 87.230.54.12 orion.2x.to. 116 IN A 87.230.100.10 orion.2x.to. 116 IN A 87.230.51.65 I learned that not every ISP / device treats such a response the same way. For example some DNS servers rotate the addresses randomly or always cycle them through. Some just propagate the first entry, others try to determine which is best (regionally near) by looking at the ip address. However if the userbase is big enough (spreads over multiple ISPs etc) it balances pretty well. The discrepancies from highest to lowest loaded server hardly every exceeds 15%. However now I have the problem that I am introducing more servers into the systems, that not all have the same capacities. I currently only have 1gbps servers, but I want to work with 100mbit and also 10gbps servers too. So what I want is I want to introduce a server with 10 GBps with a weight of 100, a 1 gbps server with a weight of 10 and a 100 mbit server with a weight of 1. I used to add servers twice to bring more traffic to them (which worked nice. the bandwidth doubled almost.) But adding a 10gbit server 100 times to DNS is a bit rediculous. So I thought about using the TTL. If I give server A 240 seconds ttl and server B only 120 seconds (which is about about the minimum to use for round robin, as a lot of dns servers set to 120 if a lower ttl is specified.. so i have heard) I think something like this should occour in an ideal scenario: first 120 seconds 50% of requests get server A -> keep it for 240 seconds. 50% of requests get server B -> keep it for 120 seconds second 120 seconds 50% of requests still have server A cached -> keep it for another 120 seconds. 25% of requests get server A -> keep it for 240 seconds 25% of requests get server B -> keep it for 120 seconds third 120 seconds 25% will get server A (from the 50% of Server A that now expired) -> cache 240 sec 25% will get server B (from the 50% of Server A that now expired) -> cache 120 sec 25% will have server A cached for another 120 seconds 12.5% will get server B (from the 25% of server B that now expired) -> cache 120sec 12.5% will get server A (from the 25% of server B that now expired) -> cache 240 sec fourth 120 seconds 25% will have server A cached -> cache for another 120 secs 12.5% will get server A (from the 25% of b that now expired) -> cache 240 secs 12.5% will get server B (from the 25% of b that now expired) -> cache 120 secs 12.5% will get server A (from the 25% of a that now expired) -> cache 240 secs 12.5% will get server B (from the 25% of a that now expired) -> cache 120 secs 6.25% will get server A (from the 12.5% of b that now expired) -> cache 240 secs 6.25% will get server B (from the 12.5% of b that now expired) -> cache 120 secs 12.5% will have server A cached -> cache another 120 secs ... i think i lost something at this point but i think you get the idea.... As you can see this gets pretty complicated to predict and it will for sure not work out like this in practice. But it should definitely have an effect on the distribution! I know that weighted round robin exists and is just controlled by the root server. It just cycles through dns records when responding and returns dns records with a set propability that corresponds to the weighting. My DNS server does not support this, and my requirements are not that precise. If it doesnt weight perfectly its okay, but it should go into the right direction. I think using the TTL field could be a more elegant and easier solution - and it deosnt require a dns server that controls this dynamically, which saves resources - which is in my opinion the whole point of dns load balancing vs hardware load balancers. My question now is... are there any best prectices / methos / rules of thumb to weight round robin distribution using the TTL attribute of DNS records? Edit: The system is a forward proxy server system. The amount of Bandwidth (not requests) exceeds what one single server with ethernet can handle. So I need a balancing solution that distributes the bandwidth to several servers. Are there any alternative methods than using DNS? Of course I can use a load balancer with fibre channel etc, but the costs are rediciulous and it also increases only the width of the bottleneck and does not eliminate it. The only thing i can think of are anycast (is it anycast or multicast?) ip addresses, but I don't have the means to set up such a system.

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• Autodetect/mount SDCards and run script for them on Linux

  - by Brendan

  Hey Everyone, I'm currently running SME Server, and need to have a script run upon the attachment of SD Cards to my server. The script itself works fine (it copies the contents of the cards), but the automounting and execution of the script is where I'm having issues. The I have a USB hub consisting of 10 USB ports; that shows up as: [root@server ~]# lsusb Bus 004 Device 002: ID 0000:0000 Bus 004 Device 001: ID 0000:0000 Bus 003 Device 001: ID 0000:0000 Bus 002 Device 001: ID 0000:0000 Bus 001 Device 055: ID 1a40:0101 TERMINUS TECHNOLOGY INC. Bus 001 Device 051: ID 1a40:0101 TERMINUS TECHNOLOGY INC. Bus 001 Device 050: ID 1a40:0101 TERMINUS TECHNOLOGY INC. Bus 001 Device 001: ID 0000:0000 (The hub is the TERMINUS TECHNOLOGY INC entries) As I cannot plug SD Cards directly into the server; I use a USB to SD card attachement (10 of them) plugged into the hub to read the cards. Upon pluggig the 10 attachments (without cards) into the hub; lsusb yields the following: [root@server ~]# lsusb Bus 004 Device 002: ID 0000:0000 Bus 004 Device 001: ID 0000:0000 Bus 003 Device 001: ID 0000:0000 Bus 002 Device 001: ID 0000:0000 Bus 001 Device 073: ID 05e3:0723 Genesys Logic, Inc. Bus 001 Device 072: ID 05e3:0723 Genesys Logic, Inc. Bus 001 Device 071: ID 05e3:0723 Genesys Logic, Inc. Bus 001 Device 070: ID 05e3:0723 Genesys Logic, Inc. Bus 001 Device 069: ID 05e3:0723 Genesys Logic, Inc. Bus 001 Device 068: ID 05e3:0723 Genesys Logic, Inc. Bus 001 Device 067: ID 05e3:0723 Genesys Logic, Inc. Bus 001 Device 066: ID 05e3:0723 Genesys Logic, Inc. Bus 001 Device 065: ID 05e3:0723 Genesys Logic, Inc. Bus 001 Device 064: ID 05e3:0723 Genesys Logic, Inc. Bus 001 Device 055: ID 1a40:0101 TERMINUS TECHNOLOGY INC. Bus 001 Device 051: ID 1a40:0101 TERMINUS TECHNOLOGY INC. Bus 001 Device 050: ID 1a40:0101 TERMINUS TECHNOLOGY INC. Bus 001 Device 001: ID 0000:0000 As you can see, the readers are the "Gensys Logic, Inc" entries. Plugging in an SD card to a reader doesn't affect lsusb (it reads exactly as above), however my system recognises the cards fine; as indicated by dmesg: Attached scsi generic sg11 at scsi54, channel 0, id 0, lun 0, type 0 USB Mass Storage device found at 73 SCSI device sdd: 31388672 512-byte hdwr sectors (16071 MB) sdd: Write Protect is on sdd: Mode Sense: 03 00 80 00 sdd: assuming drive cache: write through SCSI device sdd: 31388672 512-byte hdwr sectors (16071 MB) sdd: Write Protect is on sdd: Mode Sense: 03 00 80 00 sdd: assuming drive cache: write through sdd: sdd1 SCSI device sdd: 31388672 512-byte hdwr sectors (16071 MB) sdd: Write Protect is on sdd: Mode Sense: 03 00 80 00 sdd: assuming drive cache: write through SCSI device sdd: 31388672 512-byte hdwr sectors (16071 MB) sdd: Write Protect is on sdd: Mode Sense: 03 00 80 00 sdd: assuming drive cache: write through sdd: sdd1 SCSI device sdd: 31388672 512-byte hdwr sectors (16071 MB) sdd: Write Protect is on sdd: Mode Sense: 03 00 80 00 sdd: assuming drive cache: write through SCSI device sdd: 31388672 512-byte hdwr sectors (16071 MB) sdd: Write Protect is on sdd: Mode Sense: 03 00 80 00 sdd: assuming drive cache: write through sdd: sdd1 If I manually mount sdd1 (mount /dev/sdd1 /somedirectory/) this works fine. What I'm really after is a solution that automounts each of the cards as they are inputted into the reader; and executes a script for them (this will involve copying their contents to another directory). My problem is that I don't know how to do this; I don't think udev will work as the USB devices don't change; if I could somehow get udev working with /dev/disk/by-path/ however I think this is doable (it seems to keep constant entries). ls /dev/disk returns: pci-0000:00:1d.7-usb-0:4.1.1.1:1.0-scsi-0:0:0:0 pci-0000:00:1d.7-usb-0:4.1.1.2:1.0-scsi-0:0:0:0 pci-0000:00:1d.7-usb-0:4.1.1.3:1.0-scsi-0:0:0:0 pci-0000:00:1d.7-usb-0:4.1.1.4:1.0-scsi-0:0:0:0 pci-0000:00:1d.7-usb-0:4.1.2:1.0-scsi-0:0:0:0 pci-0000:00:1d.7-usb-0:4.1.3:1.0-scsi-0:0:0:0 pci-0000:00:1d.7-usb-0:4.1.4:1.0-scsi-0:0:0:0 pci-0000:00:1d.7-usb-0:4.2:1.0-scsi-0:0:0:0 pci-0000:00:1d.7-usb-0:4.3:1.0-scsi-0:0:0:0 pci-0000:00:1d.7-usb-0:4.4:1.0-scsi-0:0:0:0 pci-0000:00:1d.7-usb-0:4.4:1.0-scsi-0:0:0:0-part1 pci-0000:0b:01.0-scsi-0:0:1:0 pci-0000:0b:01.0-scsi-0:0:1:0-part1 pci-0000:0b:01.0-scsi-0:0:1:0-part2 From above, we can see I have only one card plugged into the reader (pci-0000:00:1d.7-usb-0:4.4:1.0-scsi-0:0:0:0-part1). Going mount /dev/disk/by-path/pci-0000\:00\:1d.7-usb-0\:4.4\:1.0-scsi-0\:0\:0\:0-part1 Works and places the card under /media/usbdisk/, however: mount /dev/disk/by-path/pci-0000\:00\:1d.7-usb-0\:4.4\:1.0-scsi-0\:0\:0\:0-part1 slot1/ doesn't work, and returns "mount: can't get address for /dev/disk/by-path/pci-0000" Any ideas and solutions would be great, I've seen the knowledge of a lot of the guys on here before so I'm hopeful someone can help me out. Thanks

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• CentOS - Configuring Puppet to play nice with SELinux

  - by Mike Purcell

  I am running into an issue every time I attempt to start the puppetmasterd service, for which I receive the following error message: root@service1 ~ # -> /etc/init.d/puppetmaster start Starting puppetmaster: Could not prepare for execution: Got 1 failure(s) while initializing: change from absent to directory failed: Could not set 'directory on ensure: Permission denied - /etc/puppet/ssl [FAILED] Apparently there was a known issue with this scenario as outlined in this bug report, however in the bug report it states the issue has been resolved in selinux-policy-3.9.16-29.fc15, but the latest CentOS default upstream version is 3.7.19-155.el6_3.4. So I am trying to figure out the best solution. I can either create a local security policy to allow puppetmasterd the access it needs, or keep researching and install a newer version of selinux-policy outside of the default upstream channel. Anyone have any recommendations? Please don't recommend disabling SELinux... ----- Update ----- Here is the puppet.conf: [main] # The Puppet log directory. # The default value is '$vardir/log'. logdir = /var/log/puppet # Where Puppet PID files are kept. # The default value is '$vardir/run'. rundir = /var/run/puppet # Where SSL certificates are kept. # The default value is '$confdir/ssl'. ssldir = $vardir/ssl [master] certname=puppetmaster.ownij.lan dns_alt_names=puppetmaster.ownij.lan [agent] # The file in which puppetd stores a list of the classes # associated with the retrieved configuratiion. Can be loaded in # the separate ``puppet`` executable using the ``--loadclasses`` # option. # The default value is '$confdir/classes.txt'. classfile = $vardir/classes.txt # Where puppetd caches the local configuration. An # extension indicating the cache format is added automatically. # The default value is '$confdir/localconfig'. localconfig = $vardir/localconfig server=puppetmaster.ownij.lan And here are the denials per the audit log: type=AVC msg=audit(1349751364.985:666): avc: denied { search } for pid=15093 comm="puppetmasterd" name="/" dev=dm-2 ino=2 scontext=unconfined_u:system_r:puppetmaster_t:s0 tcontext=system_u:object_r:home_root_t:s0 tclass=dir type=SYSCALL msg=audit(1349751364.985:666): arch=c000003e syscall=4 success=no exit=-13 a0=1391420 a1=7fffef09ed10 a2=7fffef09ed10 a3=120c500 items=0 ppid=15092 pid=15093 auid=500 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts1 ses=13 comm="puppetmasterd" exe="/usr/bin/ruby" subj=unconfined_u:system_r:puppetmaster_t:s0 key=(null) type=AVC msg=audit(1349751365.302:667): avc: denied { search } for pid=15093 comm="puppetmasterd" name="/" dev=dm-2 ino=2 scontext=unconfined_u:system_r:puppetmaster_t:s0 tcontext=system_u:object_r:home_root_t:s0 tclass=dir type=SYSCALL msg=audit(1349751365.302:667): arch=c000003e syscall=4 success=no exit=-13 a0=1d18530 a1=7fffef0d04d0 a2=7fffef0d04d0 a3=8 items=0 ppid=15092 pid=15093 auid=500 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts1 ses=13 comm="puppetmasterd" exe="/usr/bin/ruby" subj=unconfined_u:system_r:puppetmaster_t:s0 key=(null) type=AVC msg=audit(1349751365.465:668): avc: denied { search } for pid=15093 comm="puppetmasterd" name="/" dev=dm-2 ino=2 scontext=unconfined_u:system_r:puppetmaster_t:s0 tcontext=system_u:object_r:home_root_t:s0 tclass=dir type=SYSCALL msg=audit(1349751365.465:668): arch=c000003e syscall=4 success=no exit=-13 a0=1af3930 a1=7fffef0c5c70 a2=7fffef0c5c70 a3=8 items=0 ppid=15092 pid=15093 auid=500 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts1 ses=13 comm="puppetmasterd" exe="/usr/bin/ruby" subj=unconfined_u:system_r:puppetmaster_t:s0 key=(null) type=AVC msg=audit(1349751365.467:669): avc: denied { search } for pid=15093 comm="puppetmasterd" name="/" dev=dm-2 ino=2 scontext=unconfined_u:system_r:puppetmaster_t:s0 tcontext=system_u:object_r:home_root_t:s0 tclass=dir type=SYSCALL msg=audit(1349751365.467:669): arch=c000003e syscall=4 success=no exit=-13 a0=1b17aa0 a1=7fffef0c5c70 a2=7fffef0c5c70 a3=8 items=0 ppid=15092 pid=15093 auid=500 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts1 ses=13 comm="puppetmasterd" exe="/usr/bin/ruby" subj=unconfined_u:system_r:puppetmaster_t:s0 key=(null) type=AVC msg=audit(1349751366.401:670): avc: denied { write } for pid=15093 comm="puppetmasterd" name="puppet" dev=dm-0 ino=132035 scontext=unconfined_u:system_r:puppetmaster_t:s0 tcontext=system_u:object_r:puppet_etc_t:s0 tclass=dir type=SYSCALL msg=audit(1349751366.401:670): arch=c000003e syscall=83 success=no exit=-13 a0=2d7a400 a1=1f9 a2=2d7a40f a3=7fffef0a6df0 items=0 ppid=15092 pid=15093 auid=500 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts1 ses=13 comm="puppetmasterd" exe="/usr/bin/ruby" subj=unconfined_u:system_r:puppetmaster_t:s0 key=(null) And the audit log if I pass through audit2allow: root@service1 ~ # -> fgrep puppetmasterd /var/log/audit/audit.log | audit2allow -m puppetmasterd module puppetmasterd 1.0; require { type home_root_t; type puppetmaster_t; type puppet_etc_t; type puppet_var_run_t; type httpd_sys_content_t; class lnk_file { relabelfrom relabelto }; class file { relabelfrom read getattr open }; class dir { write read search getattr setattr }; } #============= puppetmaster_t ============== allow puppetmaster_t home_root_t:dir { search getattr }; allow puppetmaster_t httpd_sys_content_t:dir read; allow puppetmaster_t httpd_sys_content_t:file { read getattr open }; #!!!! The source type 'puppetmaster_t' can write to a 'dir' of the following types: # puppet_log_t, puppet_var_lib_t, puppet_var_run_t, puppetmaster_tmp_t allow puppetmaster_t puppet_etc_t:dir { write setattr }; allow puppetmaster_t puppet_etc_t:lnk_file { relabelfrom relabelto }; allow puppetmaster_t puppet_var_run_t:file relabelfrom;

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• SharePoint 2010 - Access denied during ApplyWebConfigModifications()

  - by tcoalson

  I have SharePoint 2010 installed on a Windows Server 2008 R2 machine which is also hosting SQL Sever 2008 R2. I am attempting to deploy a solution that includes web parts in the 2010 environment that is working fine in MOSS 2007. The Web Part feature has a feature receiver that updates the web.config. When I try to activate the feature through the Site Collection Feature GUI, I receive an access denied message. I am logged on to the server and in SharePoint with the APP Pool account which is also a member of the domain administrator group, local administrator group and SharePoint Farm Admin group. This account is also dbo on SQL Server. This same feature activates fine using the stsadm command. I have dug into this issue at length and here is what I have found: Looking at the Microsoft assemblies in reflector, my error is coming from the SPWebApplication.ApplyWebConfigModifications() method. I can see the trace statements from SPWebConfigFileChanges.RemoveModificationsWebConfigXMLDocument and SPWebConfigFileChanges.ApplyModificationsWebConfigXMLDocument. The next line is a Save(str). Below is the output from the SharePoint logs that pertain to this error: Apply web config modifications to web app 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.09 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation General 8grn Medium WebConfigModification: Applying web config modifications to web app in server tw-s1-m4400-007 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.09 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation Topology 88gw Medium WebConfigModification: Applying web config modifications to file C:\inetpub\wwwroot\wss\VirtualDirectories\2008\web.config 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.09 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation Topology 887b Medium Removing web config node - Path configuration/system.web/httpModules Node name add[@name='JivePageController'] 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.09 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation Topology 887b Medium Removing web config node - Path configuration/system.web/httpHandlers Node name add[@path='ScriptResource.axd'] 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.09 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation Topology 887b Medium Removing web config node - Path configuration/runtime/*[local-name()="assemblyBinding" and namespace-uri()="urn:schemas-microsoft-com:asm.v1"] Node name [local-name()="dependentAssembly"][/@name="System.Web.Extensions.Design"] 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.09 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation Topology 887b Medium Removing web config node - Path configuration/runtime/*[local-name()="assemblyBinding" and namespace-uri()="urn:schemas-microsoft-com:asm.v1"] Node name [local-name()="dependentAssembly"][/@name="System.Web.Extensions"] 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.09 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation Topology 8gp8 Medium WebConfigModification: Adding web config node - Path - configuration/runtime/*[local-name()="assemblyBinding" and namespace-uri()="urn:schemas-microsoft-com:asm.v1"] Node name - [local-name()="dependentAssembly"][/@name="System.Web.Extensions"] Node value - in web.config file C:\inetpub\wwwroot\wss\VirtualDirectories\2008\web.config 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.09 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation Topology 8gp8 Medium WebConfigModification: Adding web config node - Path - configuration/runtime/*[local-name()="assemblyBinding" and namespace-uri()="urn:schemas-microsoft-com:asm.v1"] Node name - [local-name()="dependentAssembly"][/@name="System.Web.Extensions.Design"] Node value - in web.config file C:\inetpub\wwwroot\wss\VirtualDirectories\2008\web.config 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.09 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation Topology 8gp8 Medium WebConfigModification: Adding web config node - Path - configuration/system.web/httpHandlers Node name - add[@path='ScriptResource.axd'] Node value - in web.config file C:\inetpub\wwwroot\wss\VirtualDirectories\2008\web.config 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.09 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation Topology 8gp8 Medium WebConfigModification: Adding web config node - Path - configuration/system.web/httpModules Node name - add[@name='JivePageController'] Node value - in web.config file C:\inetpub\wwwroot\wss\VirtualDirectories\2008\web.config 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.09 w3wp.exe (0x15C4) 0x1444 SharePoint Foundation Topology e5mb Medium WcfReceiveRequest: LocalAddress: 'http://tw-s1-m4400-007.jivedemo.local:32843/15702467ece1408f881abeabac3b5077/MetadataWebService.svc' Channel: 'System.ServiceModel.Channels.ServiceChannel' Action: xxx MessageId: 'urn:uuid:4e859532-ed7f-4937-8b88-68d3af43d589' 9f403ede-2c94-490b-a05c-e169cc5fe58d 02/24/2010 16:05:41.10 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation Topology f6kh High WebConfigModification: Save of web.config file C:\inetpub\wwwroot\wss\VirtualDirectories\2008\web.config for applying modifications to web app SharePoint - 2008 failed. Error message - Access to the path 'C:\inetpub\wwwroot\wss\VirtualDirectories\2008\web.config' is denied. 5a817a37-7bf6-4d26-be51-207369e38f5b 02/24/2010 16:05:41.10 w3wp.exe (0x0F64) 0x1034 SharePoint Foundation Topology 8j2o High WebConfigModification: Changes not applied to web application SharePoint - 2008 with Url xxx 5a817a37-7bf6-4d26-be51-207369e38f5b Any help would be appreciated!

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• Bluetooth RFCOMM / SDP connection to a RS232 adapter in android

  - by ThePosey

  Hello All, I am trying to use the Bluetooth Chat sample API app that google provides to connect to a bluetooth RS232 adapter hooked up to another device. Here is the app for reference: http://developer.android.com/resources/samples/BluetoothChat/index.html And here is the spec sheet for the RS232 connector just for reference: http://serialio.com/download/Docs/BlueSnap-guide-4.77_Commands.pdf Well the problem is that when I go to connect to the device with: mmSocket.connect(); (BluetoothSocket::connect()) I always get an IOException error thrown by the connect() method. When I do a toString on the exception I get "Service discovery failed". My question is mostly what are the cases that would cause an IOException to get thrown in the connect method? I know those are in the source somewhere but I don't know exactly how the java layer that you write apps in and the C/C++ layer that contains the actual stacks interface. I know that it uses the bluez bluetooth stack which is written in C/C++ but not sure how that ties into the java layer which is what I would think is throwing the exception. Any help on pointing me to where I can try to dissect this issue would be incredible. Also just to note I am able to pair with the RS232 adapter just fine but I am never able to actually connect. Here is the logcat output for more reference: I/ActivityManager( 1018): Displayed activity com.example.android.BluetoothChat/.DeviceListActivity: 326 ms (total 326 ms) E/BluetoothService.cpp( 1018): stopDiscoveryNative: D-Bus error in StopDiscovery: org.bluez.Error.Failed (Invalid discovery session) D/BluetoothChat( 1729): onActivityResult -1 D/BluetoothChatService( 1729): connect to: 00:06:66:03:0C:51 D/BluetoothChatService( 1729): setState() STATE_LISTEN - STATE_CONNECTING E/BluetoothChat( 1729): + ON RESUME + I/BluetoothChat( 1729): MESSAGE_STATE_CHANGE: STATE_CONNECTING I/BluetoothChatService( 1729): BEGIN mConnectThread E/BluetoothService.cpp( 1018): stopDiscoveryNative: D-Bus error in StopDiscovery: org.bluez.Error.Failed (Invalid discovery session) E/BluetoothEventLoop.cpp( 1018): event_filter: Received signal org.bluez.Device:PropertyChanged from /org/bluez/1498/hci0/dev_00_06_66_03_0C_51 I/BluetoothChatService( 1729): CONNECTION FAIL TOSTRING: java.io.IOException: Service discovery failed D/BluetoothChatService( 1729): setState() STATE_CONNECTING - STATE_LISTEN D/BluetoothChatService( 1729): start D/BluetoothChatService( 1729): setState() STATE_LISTEN - STATE_LISTEN I/BluetoothChat( 1729): MESSAGE_STATE_CHANGE: STATE_LISTEN V/BluetoothEventRedirector( 1080): Received android.bleutooth.device.action.UUID I/NotificationService( 1018): enqueueToast pkg=com.example.android.BluetoothChat callback=android.app.ITransientNotification$Stub$Proxy@446327c8 duration=0 I/BluetoothChat( 1729): MESSAGE_STATE_CHANGE: STATE_LISTEN E/BluetoothEventLoop.cpp( 1018): event_filter: Received signal org.bluez.Device:PropertyChanged from /org/bluez/1498/hci0/dev_00_06_66_03_0C_51 V/BluetoothEventRedirector( 1080): Received android.bleutooth.device.action.UUID The device I'm trying to connect to is the 00:06:66:03:0C:51 which I can scan for and apparently pair with just fine. The below is merged from a similar question which was successfully resolved by the selected answer here: How can one connect to an rfcomm device other than another phone in Android? The Android API provides examples of using listenUsingRfcommWithServiceRecord() to set up a socket and createRfcommSocketToServiceRecord() to connect to that socket. I'm trying to connect to an embedded device with a BlueSMiRF Gold chip. My working Python code (using the PyBluez library), which I'd like to port to Android, is as follows: sock = bluetooth.BluetoothSocket(proto=bluetooth.RFCOMM) sock.connect((device_addr, 1)) return sock.makefile() ...so the service to connect to is simply defined as channel 1, without any SDP lookup. As the only documented mechanism I see in the Android API does SDP lookup of a UUID, I'm slightly at a loss. Using "sdptool browse" from my Linux host comes up empty, so I surmise that the chip in question simply lacks SDP support.

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• MSVC Compiler options with mojo-native in Maven

  - by graham.reeds

  I'm trying to set up a test environment with Maven to build VC++ and I am way behind on this. I have 3 source files that I builds a dll (once I get this fixed it should be a simple matter to add the unit-tests): hook.cpp hook.h hook.def This is compiled, on the command line, with the following: C:\Develop\hook\src\main\msvc>cl -o hook.dll Hook.cpp /D HOOK_DLLEXPORT /link /DLL /DEF:"Hook.def" Which produces the expected obj, dll, lib and exp files. So now to get this working in Maven2 with the Mojo-native plugin. With no options Maven w/Mojo gives me this (truncated) output: [INFO] [native:initialize {execution: default-initialize}] [INFO] [native:unzipinc {execution: default-unzipinc}] [INFO] [native:javah {execution: default-javah}] [INFO] [native:compile {execution: default-compile}] [INFO] cmd.exe /X /C "cl -IC:\Develop\hook\src\main\msvc /FoC:\Develop\hook\targ et\objs\Hook.obj -c C:\Develop\hook\src\main\msvc\Hook.cpp" Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 15.00.30729.01 for 80x86 Copyright (C) Microsoft Corporation. All rights reserved. Hook.cpp [INFO] [native:link {execution: default-link}] [INFO] cmd.exe /X /C "link.exe /out:C:\Develop\hook\target\hook.dll target\objs\ Hook.obj" Microsoft (R) Incremental Linker Version 9.00.30729.01 Copyright (C) Microsoft Corporation. All rights reserved. LINK : fatal error LNK1561: entry point must be defined [INFO] ------------------------------------------------------------------------ [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] Error executing command line. Exit code:1561 mojo-native gives options for manipulating the compiler/linker options but gives no example of usage. No matter what I tweak in these settings I get the error of: [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] Failed to configure plugin parameters for: org.codehaus.mojo:native-maven -plugin:1.0-alpha-4 (found static expression: '-o hook.dll Hook.cpp /D HOOK_DLLEXPORT /link /DLL /DEF:"Hook.def"' which may act as a default value). Cause: Cannot assign configuration entry 'compilerStartOptions' to 'interface ja va.util.List' from '-o hook.dll Hook.cpp /D HOOK_DLLEXPORT /link /DLL /DEF:"Hook .def"', which is of type class java.lang.String The relevant part of my pom.xml looks like this: <configuration> <sources> <source> <directory>src/main/msvc</directory> <includes> <include>**/*.cpp</include> </includes> </source> </sources> <compilerProvider>msvc</compilerProvider> <compilerExecutable>cl</compilerExecutable> <!-- cl -o hook.dll Hook.cpp /D HOOK_DLLEXPORT /link /DLL /DEF:"Hook.def" --> <compilerStartOptions>-o hook.dll Hook.cpp /D HOOK_DLLEXPORT /link /DLL /DEF:"Hook.def"</compilerStartOptions> <!-- <compilerMiddleOptions></compilerMiddleOptions> <compilerEndOptions></compilerEndOptions> <linkerStartOptions></linkerStartOptions> <linkerMiddleOptions></linkerMiddleOptions> <linkerEndOptions></linkerEndOptions> --> </configuration> How do I manipulate the compiler to produce a DLL like the command line version does? Or should I give up and just use exec?

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• WPF TabItem Custom ContentTemplate

  - by lloydsparkes

  I have been strugging with this for a while, it would have been simple to do in WindowForms. I am making a IRC Client, there will be a number of Tabs one for each channel connect to. Each Tab needs to show a number of things, UserList, MessageHistory, Topic. In WindowForms i would just have inherited from TabItem, added some Custom Properties, and Controls, and done. In WPF i am having some slight issues with working out how to do it. I have tried many ways of doing it, and below is my current method, but i cannot get the TextBox to bind to the Topic Property. <Style TargetType="{x:Type t:IRCTabItem}" BasedOn="{StaticResource {x:Type TabItem}}" > <Setter Property="ContentTemplate"> <Setter.Value> <DataTemplate> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="540" /> <ColumnDefinition /> </Grid.ColumnDefinitions> <StackPanel Grid.Column="0"> <TextBox Text="{Binding Topic, RelativeSource={RelativeSource AncestorType={x:Type t:IRCTabItem}}}" /> </StackPanel> </Grid> </DataTemplate> </Setter.Value> </Setter> </Style> And the Codebehind public class IRCTabItem : TabItem { static IRCTabItem() { //This OverrideMetadata call tells the system that this element wants to provide a style that is different than its base class. //This style is defined in themes\generic.xaml //DefaultStyleKeyProperty.OverrideMetadata(typeof(IRCTabItem), // new FrameworkPropertyMetadata(typeof(IRCTabItem))); } public static readonly RoutedEvent CloseTabEvent = EventManager.RegisterRoutedEvent("CloseTab", RoutingStrategy.Bubble, typeof(RoutedEventHandler), typeof(IRCTabItem)); public event RoutedEventHandler CloseTab { add { AddHandler(CloseTabEvent, value); } remove { RemoveHandler(CloseTabEvent, value); } } public override void OnApplyTemplate() { base.OnApplyTemplate(); Button closeButton = base.GetTemplateChild("PART_Close") as Button; if (closeButton != null) closeButton.Click += new System.Windows.RoutedEventHandler(closeButton_Click); } void closeButton_Click(object sender, System.Windows.RoutedEventArgs e) { this.RaiseEvent(new RoutedEventArgs(CloseTabEvent, this)); } public bool Closeable { get; set; } public static readonly DependencyProperty CloseableProperty = DependencyProperty.Register("Closeable", typeof(bool), typeof(IRCTabItem), new FrameworkPropertyMetadata(true, FrameworkPropertyMetadataOptions.BindsTwoWayByDefault)); public List<String> UserList { get; set; } public static readonly DependencyProperty UserListProperty = DependencyProperty.Register("UserList", typeof(List<String>), typeof(IRCTabItem), new FrameworkPropertyMetadata(new List<String>(), FrameworkPropertyMetadataOptions.BindsTwoWayByDefault)); public String Topic { get; set; } public static readonly DependencyProperty TopicProperty = DependencyProperty.Register("Topic", typeof(String), typeof(IRCTabItem), new FrameworkPropertyMetadata("Not Connected", FrameworkPropertyMetadataOptions.BindsTwoWayByDefault)); public bool HasAlerts { get; set; } public static readonly DependencyProperty HasAlertsProperty = DependencyProperty.Register("HasAlerts", typeof(bool), typeof(IRCTabItem), new FrameworkPropertyMetadata(false, FrameworkPropertyMetadataOptions.BindsTwoWayByDefault)); } So my questions are: Am i doing it the right way (best practices)? If so how can i bind DataTemplate to Properties? If not so, what is the correct way of achieve what i am trying to achieve?

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• WCF security via message headers

  - by exalted

  I'm trying to implement "some sort of" server-client & zero-config security for some WCF service. The best (as well as easiest to me) solution that I found on www is the one described at http://www.dotnetjack.com/post/Automate-passing-valuable-information-in-WCF-headers.aspx (client-side) and http://www.dotnetjack.com/post/Processing-custom-WCF-header-values-at-server-side.aspx (corrisponding server-side). Below is my implementation for RequestAuth (descibed in the first link above): using System; using System.Diagnostics; using System.ServiceModel; using System.ServiceModel.Configuration; using System.ServiceModel.Dispatcher; using System.ServiceModel.Description; using System.ServiceModel.Channels; namespace AuthLibrary { /// <summary> /// Ref: http://www.dotnetjack.com/post/Automate-passing-valuable-information-in-WCF-headers.aspx /// </summary> public class RequestAuth : BehaviorExtensionElement, IClientMessageInspector, IEndpointBehavior { [DebuggerBrowsable(DebuggerBrowsableState.Never)] private string headerName = "AuthKey"; [DebuggerBrowsable(DebuggerBrowsableState.Never)] private string headerNamespace = "http://some.url"; public override Type BehaviorType { get { return typeof(RequestAuth); } } protected override object CreateBehavior() { return new RequestAuth(); } #region IClientMessageInspector Members // Keeping in mind that I am SENDING something to the server, // I only need to implement the BeforeSendRequest method public void AfterReceiveReply(ref System.ServiceModel.Channels.Message reply, object correlationState) { throw new NotImplementedException(); } public object BeforeSendRequest(ref System.ServiceModel.Channels.Message request, System.ServiceModel.IClientChannel channel) { MessageHeader<string> header = new MessageHeader<string>(); header.Actor = "Anyone"; header.Content = "TopSecretKey"; //Creating an untyped header to add to the WCF context MessageHeader unTypedHeader = header.GetUntypedHeader(headerName, headerNamespace); //Add the header to the current request request.Headers.Add(unTypedHeader); return null; } #endregion #region IEndpointBehavior Members public void AddBindingParameters(ServiceEndpoint endpoint, System.ServiceModel.Channels.BindingParameterCollection bindingParameters) { throw new NotImplementedException(); } public void ApplyClientBehavior(ServiceEndpoint endpoint, ClientRuntime clientRuntime) { clientRuntime.MessageInspectors.Add(this); } public void ApplyDispatchBehavior(ServiceEndpoint endpoint, EndpointDispatcher endpointDispatcher) { throw new NotImplementedException(); } public void Validate(ServiceEndpoint endpoint) { throw new NotImplementedException(); } #endregion } } So first I put this code in my client WinForms application, but then I had problems signing it, because I had to sign also all third-party references eventhough http://msdn.microsoft.com/en-us/library/h4fa028b(v=VS.80).aspx at section "What Should Not Be Strong-Named" states: In general, you should avoid strong-naming application EXE assemblies. A strongly named application or component cannot reference a weak-named component, so strong-naming an EXE prevents the EXE from referencing weak-named DLLs that are deployed with the application. For this reason, the Visual Studio project system does not strong-name application EXEs. Instead, it strong-names the Application manifest, which internally points to the weak-named application EXE. I expected VS to avoid this problem, but I had no luck there, it complained about all the unsigned references, so I created a separate "WCF Service Library" project inside my solution containing only code above and signed that one. At this point entire solution compiled just okay. And here's my problem: When I fired up "WCF Service Configuration Editor" I was able to add new behavior element extension (say "AuthExtension"), but then when I tried to add that extension to my end point behavior it gives me: Exception has been thrown by the target of an invocation. So I'm stuck here. Any ideas?

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• App is getting run in iOS 5.1.1 but crashed in iOS 6.1.3

  - by Jekil Patel

  I have implemented below code but app has been crashed in iPad with iOS version 6.1.3,while running perfectly in iPad with iOS version 5.1.1. when I am scrolling table view continuously it is crashed in ios version 6.1.3. what could be the issue. The implemented delegate and data source methods for the table view are as given below. #pragma mark - Table view data source -(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { // Return the number of sections. return 1; } -(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { // Return the number of rows in the section. return [UserList count]; } -(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath { return 70; } -(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; //cell = [[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; cell = nil; if (cell == nil) { // cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease]; cell = [[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; } UIImageView *imgViweback; imgViweback = [[UIImageView alloc]initWithFrame:CGRectMake(0,0,0,0)]; imgViweback.image = [UIImage imageNamed:@"1scr-Student List Tab BG.png"]; UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(5, 10, 32, 32)]; UIImageView *imageView1 = [[UIImageView alloc]initWithFrame:CGRectMake(12, 5, 50, 50)]; UILabel *lblName = [[UILabel alloc] initWithFrame:CGRectMake(110, 5, 200, 40)]; //cell.backgroundColor = [UIColor clearColor]; //cell.alpha = 0.5f; CountSelected = 0; flagQuizEnabled = NO; if ([[[checkedImages objectAtIndex:indexPath.row] valueForKey:@"checked"] isEqualToString:@"NO"]) { // cell.imageView.image = [UIImage imageNamed:@"Unchecked.png"]; //imageView.image = [UIImage imageNamed:@"Unchecked.png"]; } else { //imageView.image = [UIImage imageNamed:@"Checked.png"]; } NSString *pathTillApp=[[self getImagePath] stringByDeletingLastPathComponent]; NSLog(@"Path Till App %@",pathTillApp); NSString *makePath=[NSString stringWithFormat:@"%@%@",pathTillApp,[[UserList objectAtIndex:indexPath.row ]valueForKey:@"ImagePath"]]; NSLog(@"makepath=%@",makePath); imageView1.image = [UIImage imageWithContentsOfFile:makePath]; [cell.contentView insertSubview:imgViweback atIndex:0]; [cell.contentView insertSubview:imageView atIndex:0]; [cell.contentView insertSubview:imageView1 atIndex:2]; lblName.text =[NSString stringWithFormat:@"%@ %@",[[UserList objectAtIndex:indexPath.row] valueForKey:@"FirstName"],[[UserList objectAtIndex:indexPath.row] valueForKey:@"LastName"]]; lblName.backgroundColor = [UIColor clearColor]; lblName.font = [UIFont boldSystemFontOfSize:22.0f]; //lblName.font = [UIFont fontWithName:@"HelveticaNeue Heavy" size:22.0f]; lblName.font = [UIFont fontWithName:@"Chalkboard SE" size:22.0f]; [cell.contentView insertSubview:lblName atIndex:3]; [imgViweback release]; [imageView release]; [imageView1 release]; [lblName release]; imgViweback = nil; imageView = nil; imageView1 = nil; lblName = nil; //cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton; return cell; } #pragma mark - Table view delegate -(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { NSLog(@"Values : %@", Val); }

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• Need help with setting up comet code

  - by Saif Bechan

  Does anyone know off a way or maybe think its possible to connect Node.js with Nginx http push module to maintain a persistent connection between client and browser. I am new to comet so just don't understand the publishing etc maybe someone can help me with this. What i have set up so far is the following. I downloaded the jQuery.comet plugin and set up the following basic code: Client JavaScript <script type="text/javascript"> function updateFeed(data) { $('#time').text(data); } function catchAll(data, type) { console.log(data); console.log(type); } $.comet.connect('/broadcast/sub?channel=getIt'); $.comet.bind(updateFeed, 'feed'); $.comet.bind(catchAll); $('#kill-button').click(function() { $.comet.unbind(updateFeed, 'feed'); }); </script> What I can understand from this is that the client will keep on listening to the url followed by /broadcast/sub=getIt. When there is a message it will fire updateFeed. Pretty basic and understandable IMO. Nginx http push module config default_type application/octet-stream; sendfile on; keepalive_timeout 65; push_authorized_channels_only off; server { listen 80; location /broadcast { location = /broadcast/sub { set $push_channel_id $arg_channel; push_subscriber; push_subscriber_concurrency broadcast; push_channel_group broadcast; } location = /broadcast/pub { set $push_channel_id $arg_channel; push_publisher; push_min_message_buffer_length 5; push_max_message_buffer_length 20; push_message_timeout 5s; push_channel_group broadcast; } } } Ok now this tells nginx to listen at port 80 for any calls to /broadcast/sub and it will give back any responses sent to /broadcast/pub. Pretty basic also. This part is not so hard to understand, and is well documented over the internet. Most of the time there is a ruby or a php file behind this that does the broadcasting. My idea is to have node.js broadcasting /broadcast/pub. I think this will let me have persistent streaming data from the server to the client without breaking the connection. I tried the long-polling approach with looping the request but I think this will be more efficient. Or is this not going to work. Node.js file Now to create the Node.js i'm lost. First off all I don't know how to have node.js to work in this way. The setup I used for long polling is as follows: var sys = require('sys'), http = require('http'); http.createServer(function (req, res) { res.writeHead(200, {'Content-Type': 'text/html'}); res.write(new Date()); res.close(); seTimeout('',1000); }).listen(8000); This listens to port 8000 and just writes on the response variable. For long polling my nginx.config looked something like this: server { listen 80; server_name _; location / { proxy_pass http://mydomain.com:8080$request_uri; include /etc/nginx/proxy.conf; } } This just redirected the port 80 to 8000 and this worked fine. Does anyone have an idea on how to have Node.js act in a way Comet understands it. Would be really nice and you will help me out a lot. Recources used An example where this is done with ruby instead of Node.js jQuery.comet Nginx HTTP push module homepage Faye: a Comet client and server for Node.js and Rack To use faye I have to install the comet client, but I want to use the one supplied with Nginx. Thats why I don't just use faye. The one nginx uses is much more optimzed. extra Persistant connections Going evented with Node.js

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• c# - PubNub JSON serialization code works in example project but not in my project

  - by pilau

  I am making a Winamp plugin with the single function of sending the details of the song being played over HTTP to a webpage. It works like this: Winamp song event triggered - check for new song - publish to webpage using PubNub (C# API). So far I got to the stage where everything works exactly as it is supposed to, except for the PubNub code which doesn't serialize the object I'm passing for publishing into JSON. All I keep getting in the PubNub console is a mere {} - an empty JSON object. A little background on the project structure: I am using Sharpamp which is a custom library that enables making Winamp plugins with C#. I am also using the PubNub C# API. The gen_notifier_cs project is the C++ plugin wrapper created by Sharpamp. notifier_cs is where all my code resides. The two other projects are self explanatory I assume. I have referenced the PubNub API in notifier_cs, and also have referenced Sharpamp in both notifier_cs and PubNub API. So, the objects that need to get serialized are of a class Song as defined in Sharpamp: public class Song { public string Title { get; internal set; } public string Artist { get; internal set; } public string Album { get; internal set; } public string Year { get; internal set; } public bool HasMetadata { get; internal set; } public string Filename { get; internal set; } } So let's say if I have a song object with song data in it, I would go pubnub.publish("winamp_pipe", song); to publish it and PubNub will automatically serialize the data into JSON. But that's just not working in my solution. To test why it wasn't serializing, I copied that class to the example code file in the PubNub API. Visual Studio changed the class to this (notice the public Song() method): public class Song { public Song() { return; } public string Album { get; set; } public string Artist { get; set; } public string Filename { get; set; } public bool HasMetadata { get; set; } public string Title { get; set; } public string Year { get; set; } } On the same example file I initiated a default song object with some values: Song song = new Song(); song.Album = "albumname"; song.Artist = "artistname"; song.HasMetadata = true; song.Title = "songtitle"; song.Year = "2012"; And published it: pubnub.publish("winamp_pipe", song); and it worked! I got the JSON object in the PubNub channel! {"Album":"albumname","Artist":"artistname","Filename":null,"HasMetadata":true,"Title":"songtitle","Year":"2012"} So, I tried replacing the "new" Song class with the original one defined in Sharpamp. I tried adding another class definition in the notifier_cs project but that clashes with the one in Sharpamp which I have to rely on. I have been trying so many things as far as I could come up with. Needless to say none prevailed. Still, all I get is an empty JSON object. I have been pulling out my hair for the last day. I know this post is super long but I appreciate your input nonetheless. Thanks in advance.

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• Using SDL to replace colors using SDL Color Keys

  - by Shawn B

  Hey, I am working an a simple Roguelike game, and using SDL as the display. The Graphics for the game is an image of Codepage 437, with the background being black, and the font white. Instead of using many seperate image files that are already colored, I want to use one image file, and replace the colors when it is being loaded into memory. The code to split the codepage into a sprite sheet works properly, but when attempting to print in color, everything comes out in white. I had it working the past, but somehow I broke the code when changing it from change the color at print, to change the color on load. Here is the code to load the image: SDL_Surface *Screen,*Font[2]; SDL_Rect Character[256]; Uint8 ScreenY,ScreenX; Uint16 PrintX,PrintY,ScreenSizeY,ScreenSizeX; Uint32 Color[2]; void InitDisplay() { if(SDL_Init(SDL_INIT_VIDEO) == -1) { printf("SDL Init failed\n"); return; } ScreenSizeY = 600; ScreenSizeX = 800; Screen = SDL_SetVideoMode(ScreenSizeX,ScreenSizeY,32,SDL_HWSURFACE | SDL_RESIZABLE); SDL_WM_SetCaption("Alpha",NULL); SDL_Surface *Load; Load = IMG_Load("resource/font.png"); Font[0] = SDL_DisplayFormat(Load); SDL_FreeSurface(Load); Color[0] = SDL_MapRGB(Font[0]->format,255,255,255); Color[1] = SDL_MapRGB(Font[0]->format,255,0,0); Uint8 i,j,k = 0; PrintX = 0; PrintY = 0; for(i = 0; i < 16; i++) { for(j = 0; j < 16; j++) { Character[k].x = PrintX; Character[k].y = PrintY; Character[k].w = 8; Character[k].h = 12; k++; PrintX += 8; } PrintX = 0; PrintY += 12; } PrintX = 0; PrintY = 0; for(i = 1; i < 2; i++) { Font[i] = SDL_DisplayFormat(Font[0]); SDL_SetColorKey(Font[i],SDL_SRCCOLORKEY,Color[i]); SDL_FillRect(Font[i],&Font[i]->clip_rect,Color[i]); SDL_BlitSurface(Font[0],NULL,Font[i],NULL); SDL_SetColorKey(Font[0],0,Color[0]); } } The problem is with the last for loop above. I can't figure out why it isn't working. Any help is greatly appreciated!

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• asp.net ModalPopupExtender : need to show scroll bar when overflow

  - by DavRob60

  I display a gridview in a ModalPopupExtender. When the screen resolution is to small, the pop-up is to big to all be displayed on the page. I just want to add scroll bar to the pop-up when this happen. I know it's probably some CSS, but all I tried did not work. here some base css .modalTextBoxBackground { background-color:Gray; filter:alpha(opacity=70); opacity:0.7; } .modalTextBox { border: 1px solid #FFFFFF; background-color: #0066CC; color: #00FFFF; } here some code from the aspx <asp:Panel ID="OptionSelectionPanel" runat="server" CssClass="modalTextBox"> <asp:UpdatePanel ID="OptionSelectionUpdatePanel" runat="server" UpdateMode="Conditional" > <Triggers> <asp:asyncPostBackTrigger ControlID="TemplateSelection" /> </Triggers> <ContentTemplate> <table class="EditRow"> <tr class="HeaderFooter"> <td colspan="3" class="modalTextBoxTitle"> Add options to Quote </td> </tr> <tr> <td> Manufacturer </td> <td> <asp:DropDownList ID="OptionManufacturerFilter" runat="server" DataSourceID="OptionManufacturerDataSource" DataTextField="Name" DataValueField="Code" AutoPostBack="True" > </asp:DropDownList> </td> </tr> <tr> <td colspan="3"> <asp:GridView ID="NewOptionSelection" runat="server" DataSourceID="AvailableOptions" DataKeyNames="Option_Id" AllowPaging="True" AllowSorting="True" AutoGenerateColumns="false"> <Columns> <asp:BoundField DataField="category_Descr" HeaderText="Category" SortExpression="category_Descr,subcategory_Descr,code" /> <asp:BoundField DataField="subcategory_Descr" HeaderText="Sub-Category" SortExpression="subcategory_Descr,code" /> <asp:BoundField DataField="Manuf_Name" HeaderText="Manufacturer" SortExpression="Manuf_Name"/> </Columns></asp:GridView> </td> </tr> <tr class="HeaderFooter"> <td colspan="3" class="Center"> <asp:Button ID="OptionSelectionClose" runat="server" Text="Close" /> </td> </tr> </table> </ContentTemplate> </asp:UpdatePanel> </asp:Panel> <asp:Button runat="server" ID="HiddenTargetControlForOptionSelectionModalPopup" style="display:none"/> <cc1:ModalPopupExtender ID="OptionSelectionModalPopupExtender" runat="server" TargetControlID="HiddenTargetControlForOptionSelectionModalPopup" PopupControlID="OptionSelectionPanel" BackgroundCssClass="modalTextBoxBackground" />

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• UI android question/problem with Listview

  - by user309554

  Hi, I'm trying to recreate the UI screen called 'My Places' that is used in the Weather Channel app. I'd attach a screenshot of the screen, but I can't seem to do it here. It seems they're using two listviews one on top of the other, but I'm not sure for certain. Could anybody confirm this for me? If they are doing this, how is this done? I've tried to implement this, but without full success. My top listview 'Add a place' 'comes up correctly, but the bottom listview will not appear/populate for me? I shall attach my code so far...... Any help would be greatly appreciated. Thanks Simon header_row.xml ?xml version="1.0" encoding="utf-8"? LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" ImageView android:id="@+id/icon" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_marginRight="6dip" android:src="@drawable/ic_menu_add" / LinearLayout android:orientation="vertical" android:layout_width="0dip" android:layout_weight="1" android:layout_height="fill_parent" TextView android:id="@+id/caption" android:layout_width="fill_parent" android:layout_height="0dip" android:layout_weight="1" android:gravity="center_vertical" android:text="Add a place"/ /LinearLayout /LinearLayout main.xml ?xml version="1.0" encoding="utf-8"? LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="?android:attr/listPreferredItemHeight" android:padding="6dip" ListView android:id="@+id/header" android:layout_width="wrap_content" android:layout_height="wrap_content"/ LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="wrap_content" ListView android:id="@+id/list" android:layout_width="fill_parent" android:layout_height="wrap_content"/ /LinearLayout /LinearLayout public class ListViewTest extends Activity { private static String[] items={"lorem", "ipsum", "dolor", "sit", "amet", "consectetuer", "adipiscing", "elit", "morbi", "vel", "ligula", "vitae", "arcu", "aliquet", "mollis", "etiam", "vel", "erat", "placerat", "ante", "porttitor", "sodales", "pellentesque", "augue", "purus"}; private ListView Header; private ListView List; private ArrayList caption = null; private CaptionAdapter adapter; private ArrayAdapter listAdapter; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); caption = new ArrayList(); Caption cap = new Caption(); cap.setCaption("Add a place"); caption.add(cap); this.adapter = new CaptionAdapter(this, R.layout.header_row, caption); Header = (ListView) findViewById(R.id.header); Header.setAdapter(adapter); //Log.d("ListViewTest", "caption size is:" + caption.size()); adapter.notifyDataSetChanged(); List = (ListView) findViewById(R.id.list); listAdapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, items); List.setAdapter(listAdapter); listAdapter.notifyDataSetChanged(); //setListAdapter(new ArrayAdapter(this, //android.R.layout.simple_list_item_1, //items)); } private class CaptionAdapter extends ArrayAdapter { private ArrayList caption; public CaptionAdapter(Context context, int textViewResourceId, ArrayList caption) { super(context, textViewResourceId, caption); this.caption = caption; } @Override public View getView(int position, View convertView, ViewGroup parent) { View v = convertView; if (v == null) { LayoutInflater vi = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE); v = vi.inflate(R.layout.header_row, null); } Caption c = caption.get(position); if (c != null) { TextView caption = (TextView) v.findViewById(R.id.caption); if (caption != null) { caption.setText(c.getCaption()); } } return v; } } }

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• Xcode newb -- #include can't find my file

  - by morgancodes

  I'm trying to get a third party audio library (STK) working inside Xcode. Along with the standard .h files, many of the implementation files include a file called SKINI.msg. SKINI.msg is in the same directory as all of the header files. The header files are getting included fine, but the compiler complains that it can't find SKINI.msg. What do I need to do to get Xcode to happily include SKINI.msg? Edit: Here's the contents of SKINI.msg: /*********************************************************/ /* Definition of SKINI Message Types and Special Symbols Synthesis toolKit Instrument Network Interface These symbols should have the form: \c __SK_<name>_ where <name> is the string used in the SKINI stream. by Perry R. Cook, 1995 - 2010. */ /*********************************************************/ namespace stk { #define NOPE -32767 #define YEP 1 #define SK_DBL -32766 #define SK_INT -32765 #define SK_STR -32764 #define __SK_Exit_ 999 /***** MIDI COMPATIBLE MESSAGES *****/ /*** (Status bytes for channel=0) ***/ #define __SK_NoteOff_ 128 #define __SK_NoteOn_ 144 #define __SK_PolyPressure_ 160 #define __SK_ControlChange_ 176 #define __SK_ProgramChange_ 192 #define __SK_AfterTouch_ 208 #define __SK_ChannelPressure_ __SK_AfterTouch_ #define __SK_PitchWheel_ 224 #define __SK_PitchBend_ __SK_PitchWheel_ #define __SK_PitchChange_ 49 #define __SK_Clock_ 248 #define __SK_SongStart_ 250 #define __SK_Continue_ 251 #define __SK_SongStop_ 252 #define __SK_ActiveSensing_ 254 #define __SK_SystemReset_ 255 #define __SK_Volume_ 7 #define __SK_ModWheel_ 1 #define __SK_Modulation_ __SK_ModWheel_ #define __SK_Breath_ 2 #define __SK_FootControl_ 4 #define __SK_Portamento_ 65 #define __SK_Balance_ 8 #define __SK_Pan_ 10 #define __SK_Sustain_ 64 #define __SK_Damper_ __SK_Sustain_ #define __SK_Expression_ 11 #define __SK_AfterTouch_Cont_ 128 #define __SK_ModFrequency_ __SK_Expression_ #define __SK_ProphesyRibbon_ 16 #define __SK_ProphesyWheelUp_ 2 #define __SK_ProphesyWheelDown_ 3 #define __SK_ProphesyPedal_ 18 #define __SK_ProphesyKnob1_ 21 #define __SK_ProphesyKnob2_ 22 /*** Instrument Family Specific ***/ #define __SK_NoiseLevel_ __SK_FootControl_ #define __SK_PickPosition_ __SK_FootControl_ #define __SK_StringDamping_ __SK_Expression_ #define __SK_StringDetune_ __SK_ModWheel_ #define __SK_BodySize_ __SK_Breath_ #define __SK_BowPressure_ __SK_Breath_ #define __SK_BowPosition_ __SK_PickPosition_ #define __SK_BowBeta_ __SK_BowPosition_ #define __SK_ReedStiffness_ __SK_Breath_ #define __SK_ReedRestPos_ __SK_FootControl_ #define __SK_FluteEmbouchure_ __SK_Breath_ #define __SK_JetDelay_ __SK_FluteEmbouchure_ #define __SK_LipTension_ __SK_Breath_ #define __SK_SlideLength_ __SK_FootControl_ #define __SK_StrikePosition_ __SK_PickPosition_ #define __SK_StickHardness_ __SK_Breath_ #define __SK_TrillDepth_ 1051 #define __SK_TrillSpeed_ 1052 #define __SK_StrumSpeed_ __SK_TrillSpeed_ #define __SK_RollSpeed_ __SK_TrillSpeed_ #define __SK_FilterQ_ __SK_Breath_ #define __SK_FilterFreq_ 1062 #define __SK_FilterSweepRate_ __SK_FootControl_ #define __SK_ShakerInst_ 1071 #define __SK_ShakerEnergy_ __SK_Breath_ #define __SK_ShakerDamping_ __SK_ModFrequency_ #define __SK_ShakerNumObjects_ __SK_FootControl_ #define __SK_Strumming_ 1090 #define __SK_NotStrumming_ 1091 #define __SK_Trilling_ 1092 #define __SK_NotTrilling_ 1093 #define __SK_Rolling_ __SK_Strumming_ #define __SK_NotRolling_ __SK_NotStrumming_ #define __SK_PlayerSkill_ 2001 #define __SK_Chord_ 2002 #define __SK_ChordOff_ 2003 #define __SK_SINGER_FilePath_ 3000 #define __SK_SINGER_Frequency_ 3001 #define __SK_SINGER_NoteName_ 3002 #define __SK_SINGER_Shape_ 3003 #define __SK_SINGER_Glot_ 3004 #define __SK_SINGER_VoicedUnVoiced_ 3005 #define __SK_SINGER_Synthesize_ 3006 #define __SK_SINGER_Silence_ 3007 #define __SK_SINGER_VibratoAmt_ __SK_ModWheel_ #define __SK_SINGER_RndVibAmt_ 3008 #define __SK_SINGER_VibFreq_ __SK_Expression_ } // stk namespace And here's what the compiler said: CompileC build/StkCompile.build/Debug-iphonesimulator/StkCompile.build/Objects-normal/i386/BandedWG.o "../../../Data/study/iPhone class/stk-4.4.2/src/BandedWG.cpp" normal i386 c++ com.apple.compilers.gcc.4_2 cd /Users/morganpackard/Desktop/trashme/StkCompile setenv LANG en_US.US-ASCII setenv PATH "/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin" /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc-4.2 -x c++ -arch i386 -fmessage-length=0 -pipe -Wno-trigraphs -fpascal-strings -fasm-blocks -O0 -Wreturn-type -Wunused-variable -D__IPHONE_OS_VERSION_MIN_REQUIRED=30000 -isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.1.2.sdk -fvisibility=hidden -fvisibility-inlines-hidden -mmacosx-version-min=10.5 -gdwarf-2 -iquote /Users/morganpackard/Desktop/trashme/StkCompile/build/StkCompile.build/Debug-iphonesimulator/StkCompile.build/StkCompile-generated-files.hmap -I/Users/morganpackard/Desktop/trashme/StkCompile/build/StkCompile.build/Debug-iphonesimulator/StkCompile.build/StkCompile-own-target-headers.hmap -I/Users/morganpackard/Desktop/trashme/StkCompile/build/StkCompile.build/Debug-iphonesimulator/StkCompile.build/StkCompile-all-target-headers.hmap -iquote /Users/morganpackard/Desktop/trashme/StkCompile/build/StkCompile.build/Debug-iphonesimulator/StkCompile.build/StkCompile-project-headers.hmap -F/Users/morganpackard/Desktop/trashme/StkCompile/build/Debug-iphonesimulator -I/Users/morganpackard/Desktop/trashme/StkCompile/build/Debug-iphonesimulator/include -I/Users/morganpackard/Desktop/trashme/StkCompile/build/StkCompile.build/Debug-iphonesimulator/StkCompile.build/DerivedSources/i386 -I/Users/morganpackard/Desktop/trashme/StkCompile/build/StkCompile.build/Debug-iphonesimulator/StkCompile.build/DerivedSources -include /var/folders/dx/dxSUSyOJFv0MBEh9qC1oJ++++TI/-Caches-/com.apple.Xcode.501/SharedPrecompiledHeaders/StkCompile_Prefix-bopqzvwpuyqltrdumgtjtfrjvtzb/StkCompile_Prefix.pch -c "/Users/morganpackard/Desktop/trashme/StkCompile/../../../Data/study/iPhone class/stk-4.4.2/src/BandedWG.cpp" -o /Users/morganpackard/Desktop/trashme/StkCompile/build/StkCompile.build/Debug-iphonesimulator/StkCompile.build/Objects-normal/i386/BandedWG.o /Users/morganpackard/Desktop/trashme/StkCompile/../../../Data/study/iPhone class/stk-4.4.2/src/BandedWG.cpp:33:21: error: SKINI.msg: No such file or directory /Users/morganpackard/Desktop/trashme/StkCompile/../../../Data/study/iPhone class/stk-4.4.2/src/BandedWG.cpp: In member function 'virtual void stk::BandedWG::controlChange(int, stk::StkFloat)': /Users/morganpackard/Desktop/trashme/StkCompile/../../../Data/study/iPhone class/stk-4.4.2/src/BandedWG.cpp:326: error: '__SK_BowPressure_' was not declared in this scope /Users/morganpackard/Desktop/trashme/StkCompile/../../../Data/study/iPhone class/stk-4.4.2/src/BandedWG.cpp:342: error: '__SK_AfterTouch_Cont_' was not declared in this scope /Users/morganpackard/Desktop/trashme/StkCompile/../../../Data/study/iPhone class/stk-4.4.2/src/BandedWG.cpp:349: error: '__SK_ModWheel_' was not declared in this scope /Users/morganpackard/Desktop/trashme/StkCompile/../../../Data/study/iPhone class/stk-4.4.2/src/BandedWG.cpp:357: error: '__SK_ModFrequency_' was not declared in this scope /Users/morganpackard/Desktop/trashme/StkCompile/../../../Data/study/iPhone class/stk-4.4.2/src/BandedWG.cpp:359: error: '__SK_Sustain_' was not declared in this scope /Users/morganpackard/Desktop/trashme/StkCompile/../../../Data/study/iPhone class/stk-4.4.2/src/BandedWG.cpp:363: error: '__SK_Portamento_' was not declared in this scope /Users/morganpackard/Desktop/trashme/StkCompile/../../../Data/study/iPhone class/stk-4.4.2/src/BandedWG.cpp:367: error: '__SK_ProphesyRibbon_' was not declared in this scope

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• How to animate an non-closed path with CAShapeLayer?

  - by mystify

  On GitHub you can find an example for CAShapeLayer which animates an path. It animates a pentagon turning into a star. First: This works only in the iPhone simulator. OS 3.0 on the device shows serious bugs with this code. But I can't find anything wrong in there. However, I tried to animate an path which is not closed. To put it simply: A few straight lines. Is there anything special I must do to get this work properly on the device? - (void)loadView { UIView *appView = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; appView.backgroundColor = [UIColor blackColor]; self.view = appView; [appView release]; rootLayer = [CALayer layer]; rootLayer.frame = self.view.bounds; [self.view.layer addSublayer:rootLayer]; //Pentagon Path pentagonPath = CGPathCreateMutable(); CGPathMoveToPoint(pentagonPath, nil, 10.0f, 270.0f); CGPathAddLineToPoint(pentagonPath, nil, 100.0f, 270.0f); CGPathAddLineToPoint(pentagonPath, nil, 110.0f, 270.0f); CGPathAddLineToPoint(pentagonPath, nil, 120.0f, 270.0f); CGPathAddLineToPoint(pentagonPath, nil, 130.0f, 270.0f); CGPathAddLineToPoint(pentagonPath, nil, 310.0f, 270.0f); //CGPathCloseSubpath(pentagonPath); //Star Path starPath = CGPathCreateMutable(); CGPathMoveToPoint(starPath, nil, 10.0f, 270.0f); CGPathAddLineToPoint(starPath, nil, 100.0f, 270.0f); CGPathAddLineToPoint(starPath, nil, 210.0f, 270.0f); CGPathAddLineToPoint(starPath, nil, 220.0f, 260.0f); CGPathAddLineToPoint(starPath, nil, 230.0f, 270.0f); CGPathAddLineToPoint(starPath, nil, 310.0f, 270.0f); //CGPathCloseSubpath(starPath); //Create Shape shapeLayer = [CAShapeLayer layer]; //shapeLayer.path = pentagonPath; UIColor *col = [UIColor colorWithWhite:0.9 alpha:1.0]; //shapeLayer.fillColor = col.CGColor; shapeLayer.strokeColor = col.CGColor; shapeLayer.lineWidth = 3.0f; // shapeLayer.contents = [UIImage imageNamed:@"test.png"]; shapeLayer.fillRule = kCAFillRuleEvenOdd; [rootLayer addSublayer:shapeLayer]; [self performSelector:@selector(startAnimation) withObject:nil afterDelay:1.0]; } -(void)startAnimation { CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"path"]; animation.duration = 2.0; animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]; animation.repeatCount = 1e100f; animation.autoreverses = YES; animation.fromValue = (id)pentagonPath; animation.toValue = (id)starPath; [shapeLayer addAnimation:animation forKey:@"animatePath"]; } Note this lines, where I just make straight lines with a small peak which is animated: //Pentagon Path pentagonPath = CGPathCreateMutable(); CGPathMoveToPoint(pentagonPath, nil, 10.0f, 270.0f); CGPathAddLineToPoint(pentagonPath, nil, 100.0f, 270.0f); CGPathAddLineToPoint(pentagonPath, nil, 110.0f, 270.0f); CGPathAddLineToPoint(pentagonPath, nil, 120.0f, 270.0f); CGPathAddLineToPoint(pentagonPath, nil, 130.0f, 270.0f); CGPathAddLineToPoint(pentagonPath, nil, 310.0f, 270.0f); //CGPathCloseSubpath(pentagonPath); //Star Path starPath = CGPathCreateMutable(); CGPathMoveToPoint(starPath, nil, 10.0f, 270.0f); CGPathAddLineToPoint(starPath, nil, 100.0f, 270.0f); CGPathAddLineToPoint(starPath, nil, 210.0f, 270.0f); CGPathAddLineToPoint(starPath, nil, 220.0f, 260.0f); CGPathAddLineToPoint(starPath, nil, 230.0f, 270.0f); CGPathAddLineToPoint(starPath, nil, 310.0f, 270.0f); I don't want a closed and filled path, but only simple lines with some color and thickness. The nasty thing on the device is, that the first point seems to move towards the right side of the screen for no reason. On the simulator though, it works perfectly fine. Maybe something is wrong with this setup?

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• Ho to make Histogram Normalize and Equalize in java using JAI library?

  - by Jay

  I m making App in java using Swing component and JAI library. I make histogram of black and white or gray scale image.Is this method of making histogram correct? iif it is correct then how can i do normalization and Equalization of histogram in my App in java using JAI library?my code is below. in my code i make BufferedImage object and then make and plot histogram of that image . enter code here import java.awt.Color; import java.awt.Graphics; import java.awt.image.BufferedImage; import java.io.IOException; import javax.media.jai.JAI; import javax.media.jai.PlanarImage; import javax.swing.*; public class FinalHistogram extends JPanel { static int[] bins = new int[256]; static int[] newBins = new int[256]; static int x1 = 0, y1 = 0; static PlanarImage image = JAI.create("fileload", "alp_finger.tiff"); static BufferedImage bi = image.getAsBufferedImage(); FinalHistogram(int[] pbins) { for (int i = 0; i < 256; i++) { bins[i] = pbins[i]; newBins[i] = 0; } repaint(); } @Override protected void paintComponent(Graphics g) { for (int i = 0; i < 256; i++) { g.drawLine(150 + i, 300, 150 + i, 300 - (bins[i] / 300)); if (i == 0 || i == 255) { String sr = new Integer((i)).toString(); g.drawString(sr, 150 + i, 305); } System.out.println("bin[" + i + "]===" + bins[i]); } } public static void main(String[] args) throws IOException { int[] sbins = new int[256]; int pixel = 0; int k = 0; for (int x = 0; x < bi.getWidth(); x++) { for (int y = 0; y < bi.getHeight(); y++) { pixel = bi.getRaster().getSample(x, y, 0); k = (int) (pixel / 256); sbins[k]++; //pixel = bi.getRGB(x, y) & 0x000000ff; //k=pixel; //int[] pixels = m_image.getRGB(0, 0, m_image.getWidth(), m_image.getHeight(), null, 0, m_image.getWidth()); //short currentValue = 0; //int red,green,blue; //for(int i = 0; i<pixels.length; i++){ //red = (pixels[i] >> 16) & 0x000000FF; //green = (pixels[i] >>8 ) & 0x000000FF; //blue = pixels[i] & 0x000000FF; //currentValue = (short)((red + green + blue) / 3); //Current value gives the average //Disregard the alpha //assert(currentValue >= 0 && currentValue <= 255); //Something is awfully wrong if this goes off... //m_histogramArray[currentValue] += 1; //Increment the specific value of the array //} } } JTabbedPane jtp = new JTabbedPane(); jtp.addTab("Histogram", new JScrollPane(new FinalHistogram(sbins))); JFrame frame = new JFrame(); frame.setSize(500, 500); frame.add(new JScrollPane(jtp)); frame.setVisible(true); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } }

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• Interactive Data Language, IDL: Does anybody care?

  - by Alex

  Anyone use a language called Interactive Data Language, IDL? It is popular with scientists. I think it is a poor language because it is proprietary (every terminal running it has to have an expensive license purchased) and it has minimal support (try searching for IDL, the language, right now on stack) . I am trying to convince my colleagues to stop using it and learn C/C++/Python/Fortran/Java/Ruby. Does anybody know about or even care about IDL enough to have opinions on it? What do you think of it? Should I tell my colleagues to stop wasting their time on it now? How can I convince them? Edit: People are getting the impression that I don't know or use IDL. Also, I said IDL has minimal support which is true in one sense, so I must clarify that the scientific libraries are indeed large. I use IDL all the time, but this is exactly the problem: I am only using IDL because colleagues use it. There is a file format IDL uses, the .sav, which can only be opened in IDL. So I must use IDL to work with this data and transfer the data back to colleagues, but I know I would be more efficient in another language. This is like someone sending you a microsoft word file in an email attachment and if you don't understand how wrong that is then you probably write too many words not enough code and you bought microsoft word. Edit: As an alternative to IDL Python is popular. Here is a list of The Pros of IDL (and the cons) from AstroBetter: Pros of IDL Mature many numerical and astronomical libraries available Wide astronomical user base Numerical aspect well integrated with language itself Many local users with deep experience Faster for small arrays Easier installation Good, unified documentation Standard GUI run/debug tool (IDLDE) Single widget system (no angst about which to choose or learn) SAVE/RESTORE capability Use of keyword arguments as flags more convenient Cons of IDL Narrow applicability, not well suited to general programming Slower for large arrays Array functionality less powerful Table support poor Limited ability to extend using C or Fortran, such extensions hard to distribute and support Expensive, sometimes problem collaborating with others that don’t have or can’t afford licenses. Closed source (only RSI can fix bugs) Very awkward to integrate with IRAF tasks Memory management more awkward Single widget system (useless if working within another framework) Plotting: Awkward support for symbols and math text Many font systems, portability issues (v5.1 alleviates somewhat) not as flexible or as extensible plot windows not intrinsically interactive (e.g., pan & zoom) Pros of Python Very general and powerful programming language, yet easy to learn. Strong, but optional, Object Oriented programming support Very large user and developer community, very extensive and broad library base Very extensible with C, C++, or Fortran, portable distribution mechanisms available Free; non-restrictive license; Open Source Becoming the standard scripting language for astronomy Easy to use with IRAF tasks Basis of STScI application efforts More general array capabilities Faster for large arrays, better support for memory mapping Many books and on-line documentation resources available (for the language and its libraries) Better support for table structures Plotting framework (matplotlib) more extensible and general Better font support and portability (only one way to do it too) Usable within many windowing frameworks (GTK, Tk, WX, Qt…) Standard plotting functionality independent of framework used plots are embeddable within other GUIs more powerful image handling (multiple simultaneous LUTS, optional resampling/rescaling, alpha blending, etc) Support for many widget systems Strong local influence over capabilities being developed for Python Cons of Python More items to install separately Not as well accepted in astronomical community (but support clearly growing) Scientific libraries not as mature: Documentation not as complete, not as unified Not as deep in astronomical libraries and utilities Not all IDL numerical library functions have corresponding functionality in Python Some numeric constructs not quite as consistent with language (or slightly less convenient than IDL) Array indexing convention “backwards” Small array performance slower No standard GUI run/debug tool Support for many widget systems (angst regarding which to choose) Current lack of function equivalent to SAVE/RESTORE in IDL matplotlib does not yet have equivalents for all IDL 2-D plotting capability (e.g., surface plots) Use of keyword arguments used as flags less convenient Plotting: comparatively immature, still much development going on missing some plot type (e.g., surface) 3-d capability requires VTK (though matplotlib has some basic 3-d capability)

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• Flex chart not displaying right values along x axis.

  - by Shah Al

  I don't know of any better way to ask this question. If the below code is run (i know the cData sections are not visible in the preview, something causes it to be ignored). The result does not represent the data correctly. 1. Flex ignores missing date 24 aug for DECKER. 2. It wrongly associates 42.77 to 23-Aug instead of 24-AUG. Is there a way in flex, where the x-axis is a union of all available points ? The below code is entirely from : Adobe website link I have only commented 2 data points. //{date:"23-Aug-05", close:45.74}, and //{date:"24-Aug-05", close:150.71}, <?xml version="1.0"?> [Bindable] public var SMITH:ArrayCollection = new ArrayCollection([ {date:"22-Aug-05", close:41.87}, //{date:"23-Aug-05", close:45.74}, {date:"24-Aug-05", close:42.77}, {date:"25-Aug-05", close:48.06}, ]); [Bindable] public var DECKER:ArrayCollection = new ArrayCollection([ {date:"22-Aug-05", close:157.59}, {date:"23-Aug-05", close:160.3}, //{date:"24-Aug-05", close:150.71}, {date:"25-Aug-05", close:156.88}, ]); [Bindable] public var deckerColor:Number = 0x224488; [Bindable] public var smithColor:Number = 0x884422; ]] <mx:horizontalAxisRenderers> <mx:AxisRenderer placement="bottom" axis="{h1}"/> </mx:horizontalAxisRenderers> <mx:verticalAxisRenderers> <mx:AxisRenderer placement="left" axis="{v1}"> <mx:axisStroke>{h1Stroke}</mx:axisStroke> </mx:AxisRenderer> <mx:AxisRenderer placement="left" axis="{v2}"> <mx:axisStroke>{h2Stroke}</mx:axisStroke> </mx:AxisRenderer> </mx:verticalAxisRenderers> <mx:series> <mx:ColumnSeries id="cs1" horizontalAxis="{h1}" dataProvider="{SMITH}" yField="close" displayName="SMITH" > <mx:fill> <mx:SolidColor color="{smithColor}"/> </mx:fill> <mx:verticalAxis> <mx:LinearAxis id="v1" minimum="40" maximum="50"/> </mx:verticalAxis> </mx:ColumnSeries> <mx:LineSeries id="cs2" horizontalAxis="{h1}" dataProvider="{DECKER}" yField="close" displayName="DECKER" > <mx:verticalAxis> <mx:LinearAxis id="v2" minimum="150" maximum="170"/> </mx:verticalAxis> <mx:lineStroke> <mx:Stroke color="{deckerColor}" weight="4" alpha="1" /> </mx:lineStroke> </mx:LineSeries> </mx:series> </mx:ColumnChart> <mx:Legend dataProvider="{myChart}"/>

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• UIButtons in UIScrollView stop it scrolling, how to fix?

  - by Mark McFarlane

  Hi all, I have a problem with adding a set of UIButtons to a UIScrollView. With the buttons added it seems that the scroll command is not being passed to the scroll view as the buttons cover the whole surface. I've read various posts on this but still can't figure it out. I'm pretty new to iPhone programming so there's probably something obvious I've missed. I've tried things like canCancelContentTouches and delaysContentTouches to TRUE and FALSE. Here is the code I use to add the buttons to the scrollview. The scrollview was created in IB and is passed in to the function: -(void)drawCharacters:(NSMutableArray *)chars:(UIScrollView *)target_view { //NSLog(@"CLEARING PREVIOUS BUTTONS"); //clear previous buttons for parts/kanji if(target_view == viewParts){ for (UIButton *btn in parts_buttons) { [btn removeFromSuperview]; } [parts_buttons removeAllObjects]; } else if(target_view == viewKanji){ for (UIButton *btn in kanji_buttons) { [btn removeFromSuperview]; } [kanji_buttons removeAllObjects]; } //display options int chars_per_line = 9; //change this to change the number of chars displayed on each line if(target_view == viewKanji){ chars_per_line = 8; } int char_gap = 0; //change this to change the margin between chars int char_dimensions = (320/chars_per_line)-(char_gap*2); //set starting x, y coords int x = 0, y = 0; //increment y coord y += char_gap; //NSLog(@"ABOUT TO DRAW FIRST BUTTON"); for(NSMutableArray *char_arr in chars){ //increment x coord x += char_gap; //draw at x and y UIButton *myButton = [UIButton buttonWithType:UIButtonTypeCustom]; myButton.frame = CGRectMake(x, y, char_dimensions, char_dimensions); // position in the parent view and set the size of the button [myButton setTitle:[char_arr objectAtIndex:0] forState:UIControlStateNormal]; [myButton setTitleColor:[UIColor darkGrayColor] forState:UIControlStateNormal]; [myButton setTitleColor:[UIColor colorWithRed:0.8 green:0.8 blue:0.8 alpha:1.0] forState:UIControlStateDisabled]; myButton.titleLabel.font = [UIFont boldSystemFontOfSize:22]; if(target_view == viewKanji){ myButton.titleLabel.font = [UIFont boldSystemFontOfSize:30]; } // add targets and actions if(target_view == viewParts){ [myButton addTarget:self action:@selector(partSelected:) forControlEvents:UIControlEventTouchUpInside]; } else if(target_view == viewKanji){ [myButton addTarget:self action:@selector(kanjiSelected:) forControlEvents:UIControlEventTouchUpInside]; [myButton setTag:(int)[char_arr objectAtIndex:1]]; } //if the part isnt in the current list of kanji, disable and dim it if(target_view == viewParts){ if([kanji count] > 0){ [myButton setEnabled:NO]; } bool do_break = NO; for(NSMutableArray *arr in kanji){ //NSLog([NSString stringWithFormat:@"CHECKING PARTS AGAINST %d KANJI", [kanji count]]); for(NSString *str in [[arr objectAtIndex:2] componentsSeparatedByString:@" "]){ if(([myButton.titleLabel.text isEqualToString:str])){ //NSLog(@"--------------MATCH!!!-----------------"); [myButton setEnabled:YES]; for(NSString *str1 in parts_selected){ if(([myButton.titleLabel.text isEqualToString:str1])){ [myButton setEnabled:NO]; break; } } do_break = YES; break; } if(do_break) break; } if(do_break) break; } } // add to a view [target_view addSubview:myButton]; //update coords of next button x += char_dimensions+ char_gap; if (x > (320-char_dimensions)) { x = 0; y += char_dimensions + (char_gap*2); } //add button to global array to be removed from view next update if(target_view == viewParts){ [parts_buttons addObject:myButton]; } else if(target_view == viewKanji){ [kanji_buttons addObject:myButton]; } } //NSLog(@"FINISHED DRAWING ALL BUTTONS"); } Any help on this would be greatly appreciated. I just need to fix this to finish my app.

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