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  • How to set up RPX widget and facebook app to be able to authenticate with rpx_now?

    - by Andrei
    Using the sample app for rpx_now gem ( http://github.com/grosser/rpx_now_example) on localhost:3000, I have successfully logged in via Google Accounts, myOpenID, Yahoo, but cannot make it via Facebook. In the RPX app/widget settings I have set my facebook-app key and secret. In my facebook app settings, the Connect URL is myappname.rpxnow.com. But when I try to connect, then I don't even see a facebook login page, just a number of redirects and I am back to my localhost with the following exception http://gist.github.com/386520 . Before I was successfully connecting with oauth2 gem, however, without fetching user data - only authentication. That time I set only key/secret and localhost as my Connect URL. Currently, I don't even ask for email etc., but still the same problem. Can it happen because rpx_now cannot get requested user data from facebook? Or it is a problem of facebook key/secret? May be I need to provide more settings of my facebook app? RPXNow::ApiError in UsersController#create Got error: Invalid parameter: token (code: 1), HTTP status: 200 RAILS_ROOT: /home/Andrei/rpx_now_example Application Trace | Framework Trace | Full Trace /usr/lib/ruby/gems/1.8/gems/rpx_now-0.6.20/lib/rpx_now/api.rb:71:in `parse_response' /usr/lib/ruby/gems/1.8/gems/rpx_now-0.6.20/lib/rpx_now/api.rb:21:in `call' /usr/lib/ruby/gems/1.8/gems/rpx_now-0.6.20/lib/rpx_now.rb:23:in `user_data' /home/Andrei/rpx_now_example/app/controllers/users_controller.rb:16:in `create' Request Parameters: None Show session dump Response Headers: {"Content-Type"="", "Cache-Control"="no-cache"}

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  • Travelling MVP #2: Community event at Bucharest, Romania

    - by DigiMortal
    My second trip was to DevReach with two stops. My first stop was at Bucharest where I met with my friend Dimitar Georgiev who is one of authors of Gym Realm service. Romanian MVP Andrei Ignat was our host there and organized meeting with local community guys. With me – it was first time in my life – was one more guy from Estonia visiting DevReach and he made the whole trip with me. Bucharest We arrived to Bucharest 29.09 at night. We stayed at Hotel Michelangelo. It’s small hotel with nice rooms, free WiFi and very good service. Although my room was on the first floor there was no street noise. We visited one restaurant that offers national cuisine and it was really great. Next day we went out with local guys and had some beers in “old town”. Bucharest “old town” is nice and cozy. There are many bars open and I am sure everybody will find there some very okay place. After supper we visited one warm karaoke bar where we had beers with local guys. Andrei Ignat – karaoke star Agu Suur and Andrei Ion Rinea enjoying karaoke and tequila Community event Next day we had community event. I made my session about ASP.NET Web API and Dimitar told about how to port ASP.NET web applications to cloud environment. Sessions were held at study class of one local company. Dimitar Georgiev speaking about porting web apps to Windows Azure. As it was usual community evening and not some bigger event there were about 12 guys attending from Bucharest. There were both IT-PROs and developers and one nice thing about Bucharest community is that they are listening to you very well and they ask questions if something is unclear or if you slide over from topic they are interested in. Okay, we tried to keep up good tempo so people stay awake and I think we succeeded. After sessions we went all together to local Piranha pub that was near event venue. We had some beers with local guys and talked with them on different technology topics. It was another good and interesting evening at Bucharest. I want to go back there for sure. As it was my first trip to Bucharest and mostly I gathered experiences I think my next community trip there will be way stronger. I take it as a challenge. Plus – I have there some new friends and I want to meet them too – be it community event or not. :)

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  • How to kill unkillable Python-processes running as root

    - by Andrei
    I am experiencing an annoying problem with sshuttle running it on 10.7.3, MBA with the latest firmware update -- after I stop it (ctrl+c twice), or loose connection, or close the lid, I cannot restore it until I restart the system. The restarting takes notably more time, than it would normally take. I have tried to flush ipfw rules - not helping. Could you advice me how to restore sshuttle connection (without restarting os)? The following processes remain running as root, which I do not know how to kill (tried sudo kill -9 <pid> with no luck): root 14464 python ./main.py python -v -v --firewall 12296 12296 root 14396 python ./main.py python -v -v --firewall 12297 12297 root 14306 python ./main.py python -v -v --firewall 12298 12298 root 3678 python ./main.py python -v -v --firewall 12299 12299 root 2263 python ./main.py python -v -v --firewall 12300 12300 The command I use to run proxy: ./sshuttle --dns -r [email protected] 10.0.0.0/8 -vv The last message I get trying to restore the connection: ... firewall manager: starting transproxy. s: Ready: 1 r=[4] w=[] x=[] s: < channel=0 cmd=PING len=7 s: > channel=0 cmd=PONG len=7 (fullness=554) s: mux wrote: 15/15 s: Waiting: 1 r=[4] w=[] x=[] (fullness=561/0) >> ipfw -q add 12300 check-state ip from any to any >> ipfw -q add 12300 skipto 12301 tcp from any to 127.0.0.0/8 >> ipfw -q add 12300 fwd 127.0.0.1,12300 tcp from any to 10.0.0.0/8 not ipttl 42 keep-state setup >> ipfw -q add 12300 divert 12300 udp from any to 10.0.1.1/32 53 not ipttl 42 >> ipfw -q add 12300 divert 12300 udp from any 12300 to any not ipttl 42 Update: $ ps -ax|grep python 1611 ?? 0:06.49 python ./main.py python -v -v --firewall 12300 12300 48844 ?? 0:00.05 python ./main.py python -v -v --firewall 12299 12299 49538 ttys000 0:00.00 grep python

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  • Which are the non-x text editors in Powershell?

    - by Andrei T. Ursan
    Are there some editors like emacs, vi/vim, specifically for power shell, if so which are the best? I will have to do some work on windows and I need some unix productivity - which means for me shell + text editor with syntax highlighting (for python, java, c, c++), so which are my options? Edit: I'm looking for an alternative at vim or other unix editors, and cygwin is not an option. I just want from the command line to say texteditor_name file1, modify it, save it etc, and all of these to happen inside the terminal, not in another interface etc.

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  • Cisco, How to do a subnetting scheme using VLSM and RIP-2?

    - by Andrei T. Ursan
    I'm studying for my CCNA exam and I have to create a VLSM scheme using RIP-2 for the following requirements: (this is an exercise) Use the class C network 192.168.1.0 network for your point-to-point connections Using the Class A network 10.0.0.0, plan for the following number of hosts in each location: New York: 1000 Chicago: 500 Los Angeles: 1000 On the LAN and point-to-point connections, select subnet masks that use the smallest ranges of IP addresses possible given the above requirements. In all cases, use the lowest possible subnet numbers. Subnet zero is allowed. My guess is the following: New York: S0/0 192.168.1.1 /24 Fa0/0 10.1.0.1 netmask 255.255.248.0 - because we need 1000 hosts Chicago: S0/0 192.168.1.2 /24 Fa0/0 10.2.0.1 netmask 255.255.252.0 (for 500 hosts) Los Angeles: S0/0 192.168.2.3 /24 Fa0/0 10.3.0.1 netmask 255.255.248.0 (for 1000 hosts) Is this a good configuration? I'm reading the CCNA book but not everything is very clear, so I said to do some exercises... Thank you!

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  • Raphael js library: problems with animateAlong in IE7

    - by Andrei
    Hi there, I'm having trouble making a simple shape move along a path in IE7 (the only version of IE I tried, actually). The following code works fine in chrome and firefox, but not IE. I couldn't find an obvious reason, has anybody seen something similar? canvas.path(rPath.path).attr("stroke", "blue"); var circle = canvas.circle(rPath.startX, rPath.startY, 5); circle.animateAlong(rPath.path, 3000, true); My rPath variable has the path and the starting point coordinates. Microsoft script debugger points to this line as the one where the code breaks: os.left != (t = x - left + "px") && (os.left = t); (line 2131 inside the uncompressed raphael.js script file, inside Element[proto].setBox = function (params, cx, cy) {...}) Any ideas? Any experience (good or bad) with raphael's animateAlong in IE7? TIA, Andrei

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  • Problems with animateAlong in IE7

    - by Andrei
    Hi there, I'm having trouble making a simple shape move along a path in IE7 (the only version of IE I tried, actually). The following code works fine in chrome and firefox, but not IE. I couldn't find an obvious reason, has anybody seen something similar? canvas.path(rPath.path).attr("stroke", "blue"); var circle = canvas.circle(rPath.startX, rPath.startY, 5); circle.animateAlong(rPath.path, 3000, true); My rPath variable has the path and the starting point coordinates. Microsoft script debugger points to this line as the one where the code breaks: os.left != (t = x - left + "px") && (os.left = t); (line 2131 inside the uncompressed raphael.js script file, inside Element[proto].setBox = function (params, cx, cy) {...}) Any ideas? Any experience (good or bad) with raphael's animateAlong in IE7? TIA, Andrei

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  • execute script after desktop loaded?

    - by Andre
    I want to execute bash script on startup that opens several terminals in different workspaces. Script works just fine if I call it from terminal, but it doesn't work if executed from crontab using @reboot: #!/usr/bin/env bash #1 make sure we have enough workspaces gconftool-2 --set -t int /apps/metacity/general/num_workspaces 7 #2. Launch programs in these terminals wmctrl -s 6 gnome-terminal --full-screen --execute bash -c "tmux attach; bash" wmctrl -s 5 gnome-terminal --full-screen --execute bash -c "weechat-curses; bash" wmctrl -s 4 gnome-terminal --full-screen --execute bash -c "export TERM=xterm-256color; mutt; bash" wmctrl -s 3 gnome-terminal --full-screen wmctrl -s 2 gnome-terminal --full-screen wmctrl -s 1 gnome-terminal --full-screen wmctrl -s 0 google-chrome --start-maximized I think it's because crontab job triggers before desktop environment is loaded...maybe...? How can I execute this script after desktop environment is loaded? thanks:) Update 1: i've started it from crontab initially like this: @reboot $HOME/andreiscripts/startup.sh >> $HOME/andreiscripts/testlog.txt 2>&1 and was getting these errors: Cannot open display. Failed to parse arguments: Cannot open display: Cannot open display. Failed to parse arguments: Cannot open display: Cannot open display. ..... Update 2 I've tried to launch script from System Preferences Startup Applications /home/andrei/andreiscripts/startup.sh >> /home/andrei/Desktop/out.txt 2>&1 but script only opened first gnome-terminal in workspace 6... and wouldn't continue executing the rest of the script until I close that gnome-terminal and so on....

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  • Memory leak / GLib issue.

    - by Andrei Ciobanu
    1: /* 2: * File: xyn-playlist.c 3: * Author: Andrei Ciobanu 4: * 5: * Created on June 4, 2010, 12:47 PM 6: */ 7:   8: #include <dirent.h> 9: #include <glib.h> 10: #include <stdio.h> 11: #include <stdlib.h> 12: #include <sys/stat.h> 13: #include <unistd.h> 14:   15: /** 16: * Returns a list all the file(paths) from a directory. 17: * Returns 'NULL' if a certain error occurs. 18: * @param dir_path. 19: * @param A list of gchars* indicating what file patterns to detect. 20: */ 21: GSList *xyn_pl_get_files(const gchar *dir_path, GSList *file_patterns) { 22: /* Returning list containing file paths */ 23: GSList *fpaths = NULL; 24: /* Used to scan directories for subdirs. Acts like a 25: * stack, to avoid recursion. */ 26: GSList *dirs = NULL; 27: /* Current dir */ 28: DIR *cdir = NULL; 29: /* Current dir entries */ 30: struct dirent *cent = NULL; 31: /* File stats */ 32: struct stat cent_stat; 33: /* dir_path duplicate, on the heap */ 34: gchar *dir_pdup; 35:   36: if (dir_path == NULL) { 37: return NULL; 38: } 39:   40: dir_pdup = g_strdup((const gchar*) dir_path); 41: dirs = g_slist_append(dirs, (gpointer) dir_pdup); 42: while (dirs != NULL) { 43: cdir = opendir((const gchar*) dirs->data); 44: if (cdir == NULL) { 45: g_slist_free(dirs); 46: g_slist_free(fpaths); 47: return NULL; 48: } 49: chdir((const gchar*) dirs->data); 50: while ((cent = readdir(cdir)) != NULL) { 51: lstat(cent->d_name, &cent_stat); 52: if (S_ISDIR(cent_stat.st_mode)) { 53: if (g_strcmp0(cent->d_name, ".") == 0 || 54: g_strcmp0(cent->d_name, "..") == 0) { 55: /* Skip "." and ".." dirs */ 56: continue; 57: } 58: dirs = g_slist_append(dirs, 59: g_strconcat((gchar*) dirs->data, "/", cent->d_name, NULL)); 60: } else { 61: fpaths = g_slist_append(fpaths, 62: g_strconcat((gchar*) dirs->data, "/", cent->d_name, NULL)); 63: } 64: } 65: g_free(dirs->data); 66: dirs = g_slist_delete_link(dirs, dirs); 67: closedir(cdir); 68: } 69: return fpaths; 70: } 71:   72: int main(int argc, char** argv) { 73: GSList *l = NULL; 74: l = xyn_pl_get_files("/home/andrei/Music", NULL); 75: g_slist_foreach(l,(GFunc)printf,NULL); 76: printf("%d\n",g_slist_length(l)); 77: g_slist_free(l); 78: return (0); 79: } 80:   81:   82: -----------------------------------------------------------------------------------------------==15429== 83: ==15429== HEAP SUMMARY: 84: ==15429== in use at exit: 751,451 bytes in 7,263 blocks 85: ==15429== total heap usage: 8,611 allocs, 1,348 frees, 22,898,217 bytes allocated 86: ==15429== 87: ==15429== 120 bytes in 1 blocks are possibly lost in loss record 1 of 11 88: ==15429== at 0x4024106: memalign (vg_replace_malloc.c:581) 89: ==15429== by 0x4024163: posix_memalign (vg_replace_malloc.c:709) 90: ==15429== by 0x40969C1: ??? (in /lib/libglib-2.0.so.0.2400.1) 91: ==15429== by 0x40971F6: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1) 92: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1) 93: ==15429== by 0x80488F0: xyn_pl_get_files (xyn-playlist.c:41) 94: ==15429== by 0x8048848: main (main.c:18) 95: ==15429== 96: ==15429== 129 bytes in 1 blocks are possibly lost in loss record 2 of 11 97: ==15429== at 0x4024F20: malloc (vg_replace_malloc.c:236) 98: ==15429== by 0x4081243: g_malloc (in /lib/libglib-2.0.so.0.2400.1) 99: ==15429== by 0x409B85B: g_strconcat (in /lib/libglib-2.0.so.0.2400.1) 100: ==15429== by 0x80489FE: xyn_pl_get_files (xyn-playlist.c:62) 101: ==15429== by 0x8048848: main (main.c:18) 102: ==15429== 103: ==15429== 360 bytes in 3 blocks are possibly lost in loss record 3 of 11 104: ==15429== at 0x4024106: memalign (vg_replace_malloc.c:581) 105: ==15429== by 0x4024163: posix_memalign (vg_replace_malloc.c:709) 106: ==15429== by 0x40969C1: ??? (in /lib/libglib-2.0.so.0.2400.1) 107: ==15429== by 0x4097222: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1) 108: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1) 109: ==15429== by 0x80488F0: xyn_pl_get_files (xyn-playlist.c:41) 110: ==15429== by 0x8048848: main (main.c:18) 111: ==15429== 112: ==15429== 508 bytes in 1 blocks are still reachable in loss record 4 of 11 113: ==15429== at 0x402425F: calloc (vg_replace_malloc.c:467) 114: ==15429== by 0x408113B: g_malloc0 (in /lib/libglib-2.0.so.0.2400.1) 115: ==15429== by 0x409624D: ??? (in /lib/libglib-2.0.so.0.2400.1) 116: ==15429== by 0x409710C: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1) 117: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1) 118: ==15429== by 0x80488F0: xyn_pl_get_files (xyn-playlist.c:41) 119: ==15429== by 0x8048848: main (main.c:18) 120: ==15429== 121: ==15429== 508 bytes in 1 blocks are still reachable in loss record 5 of 11 122: ==15429== at 0x402425F: calloc (vg_replace_malloc.c:467) 123: ==15429== by 0x408113B: g_malloc0 (in /lib/libglib-2.0.so.0.2400.1) 124: ==15429== by 0x409626F: ??? (in /lib/libglib-2.0.so.0.2400.1) 125: ==15429== by 0x409710C: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1) 126: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1) 127: ==15429== by 0x80488F0: xyn_pl_get_files (xyn-playlist.c:41) 128: ==15429== by 0x8048848: main (main.c:18) 129: ==15429== 130: ==15429== 508 bytes in 1 blocks are still reachable in loss record 6 of 11 131: ==15429== at 0x402425F: calloc (vg_replace_malloc.c:467) 132: ==15429== by 0x408113B: g_malloc0 (in /lib/libglib-2.0.so.0.2400.1) 133: ==15429== by 0x4096291: ??? (in /lib/libglib-2.0.so.0.2400.1) 134: ==15429== by 0x409710C: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1) 135: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1) 136: ==15429== by 0x80488F0: xyn_pl_get_files (xyn-playlist.c:41) 137: ==15429== by 0x8048848: main (main.c:18) 138: ==15429== 139: ==15429== 1,200 bytes in 10 blocks are possibly lost in loss record 7 of 11 140: ==15429== at 0x4024106: memalign (vg_replace_malloc.c:581) 141: ==15429== by 0x4024163: posix_memalign (vg_replace_malloc.c:709) 142: ==15429== by 0x40969C1: ??? (in /lib/libglib-2.0.so.0.2400.1) 143: ==15429== by 0x40971F6: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1) 144: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1) 145: ==15429== by 0x8048A0D: xyn_pl_get_files (xyn-playlist.c:61) 146: ==15429== by 0x8048848: main (main.c:18) 147: ==15429== 148: ==15429== 2,040 bytes in 1 blocks are still reachable in loss record 8 of 11 149: ==15429== at 0x402425F: calloc (vg_replace_malloc.c:467) 150: ==15429== by 0x408113B: g_malloc0 (in /lib/libglib-2.0.so.0.2400.1) 151: ==15429== by 0x40970AB: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1) 152: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1) 153: ==15429== by 0x80488F0: xyn_pl_get_files (xyn-playlist.c:41) 154: ==15429== by 0x8048848: main (main.c:18) 155: ==15429== 156: ==15429== 4,320 bytes in 36 blocks are possibly lost in loss record 9 of 11 157: ==15429== at 0x4024106: memalign (vg_replace_malloc.c:581) 158: ==15429== by 0x4024163: posix_memalign (vg_replace_malloc.c:709) 159: ==15429== by 0x40969C1: ??? (in /lib/libglib-2.0.so.0.2400.1) 160: ==15429== by 0x4097222: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1) 161: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1) 162: ==15429== by 0x80489D2: xyn_pl_get_files (xyn-playlist.c:58) 163: ==15429== by 0x8048848: main (main.c:18) 164: ==15429== 165: ==15429== 56,640 bytes in 472 blocks are possibly lost in loss record 10 of 11 166: ==15429== at 0x4024106: memalign (vg_replace_malloc.c:581) 167: ==15429== by 0x4024163: posix_memalign (vg_replace_malloc.c:709) 168: ==15429== by 0x40969C1: ??? (in /lib/libglib-2.0.so.0.2400.1) 169: ==15429== by 0x4097222: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1) 170: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1) 171: ==15429== by 0x8048A0D: xyn_pl_get_files (xyn-playlist.c:61) 172: ==15429== by 0x8048848: main (main.c:18) 173: ==15429== 174: ==15429== 685,118 bytes in 6,736 blocks are definitely lost in loss record 11 of 11 175: ==15429== at 0x4024F20: malloc (vg_replace_malloc.c:236) 176: ==15429== by 0x4081243: g_malloc (in /lib/libglib-2.0.so.0.2400.1) 177: ==15429== by 0x409B85B: g_strconcat (in /lib/libglib-2.0.so.0.2400.1) 178: ==15429== by 0x80489FE: xyn_pl_get_files (xyn-playlist.c:62) 179: ==15429== by 0x8048848: main (main.c:18) 180: ==15429== 181: ==15429== LEAK SUMMARY: 182: ==15429== definitely lost: 685,118 bytes in 6,736 blocks 183: ==15429== indirectly lost: 0 bytes in 0 blocks 184: ==15429== possibly lost: 62,769 bytes in 523 blocks 185: ==15429== still reachable: 3,564 bytes in 4 blocks 186: ==15429== suppressed: 0 bytes in 0 blocks 187: ==15429== 188: ==15429== For counts of detected and suppressed errors, rerun with: -v 189: ==15429== ERROR SUMMARY: 7 errors from 7 contexts (suppressed: 17 from 8) 190: ---------------------------------------------------------------------------------------------- I am using the above code in order to create a list with all the filepaths in a certain directory. (In my case fts.h or ftw.h are not an option). I am using GLib as the data structures library. Still I have my doubts in regarding the way GLib is allocating, de-allocating memory ? When invoking g_slist_free(list) i also free the data contained by the elements ? Why all those memory leaks appear ? Is valgrind a suitable tool for profilinf memory issues when using a complex library like GLib ? LATER EDIT: If I g_slist_foreach(l,(GFunc)g_free,NULL);, the valgrind report is different, (All the memory leaks from 'definitely lost' will move to 'indirectly lost'). Still I don't see the point ? Aren't GLib collections implement a way to be freed ?

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  • How can I stop rails validating xml?

    - by Andrei T. Ursan
    I'm submitting to a rails webservice the following message: xmlPostData = "<message> <message-text>" + MESSAGE_WITH_XML + "</message-text> <name>" + subject + "</name> <f1>" + toPhone + "</f1> <f2>" + fromPhone + "</f2> </message>"; The problem is the the field with contain a text with XML data, is a workaround but I need to be able to submit that xml to the db and get it from there. Can I stop rails validating and replacing my xml in json format? this is how it looks: --- !map:HashWithIndifferentAccess smil: !map:HashWithIndifferentAccess head: !map:HashWithIndifferentAccess layout: !map:HashWithIndifferentAccess root_layout: !map:HashWithIndifferentAccess height: &quot;600&quot; background_color: white width: &quot;800&quot; type: text/smil-basic-layout body: !map:HashWithIndifferentAccess par: !map:HashWithIndifferentAccess text: !map:HashWithIndifferentAccess left: &quot;33&quot; begin: &quot;33&quot; dur: &quot;33&quot; val: 34343434343434343aaaaaaa height: &quot;33&quot; width: &quot;33&quot; top: &quot;33&quot; And this is the ruby method from the rails webservice: # POST /messages # POST /messages.xml def create @message = Message.new(params[:message]) respond_to do |format| if @message.save flash[:notice] = 'Message was successfully created.' format.html { redirect_to(@message) } format.xml { render :xml => @message, :status => :created, :location => @message } else format.html { render :action => "new" } format.xml { render :xml => @message.errors, :status => :unprocessable_entity } end end end Is a workaround but for the moment this has to work ...

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  • Practical value for concurrent-request-timeout parameter

    - by Andrei
    In the Seam Reference Guide, one can find this paragraph: We can set a sensible default for the concurrent request timeout (in ms) in components.xml: <core:manager concurrent-request-timeout="500" /> However, we found that 500 ms is not nearly enough time for most of the cases we had to deal with, especially with the severe restriction seam places on conversation access. In our application we have a combination of page scoped ajax requests (triggered by various use actions), some global scoped polling notification logic (part of the header, so included in every page) and regular links that invoke actions and/or navigate to other pages. Therefore, we get the dreaded concurrent access to conversation exception way too often, even without any significant load on the site. After researching the options for quite a bit, we ended up bumping this value to several seconds (we're debating whether to bump it up to 10s), as none of the recommended solutions seemed able to solve our issue completely (even forcing a global queue for all the ajax requests would still leave us exposed to a user deciding to click a link right when one of our polling calls was in progress). And we'd much rather have the users wait for a second or two instead of getting an error page just because they clicked a link at the wrong moment. And now to the question: is there something obvious we're missing (like a way to allow concurrent access to conversations and taking care of the needed locking ourselves, for instance :)? How do people solve this problem (ajax requests mixed with user driven interaction) in seam? Disabling all the links on the page while ajax requests are in progress (as suggested by one blog page) is really not a viable option. Any other suggestions? TIA, Andrei

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  • How do I update blackberry UI items from a thread?

    - by Andrei T. Ursan
    public class PlayText extends Thread { private int duration; private String text; private PlayerScreen playerscrn; public PlayText(String text, int duration) { this.duration = duration; this.text = text; this.playerscrn = (PlayerScreen)UiApplication.getUiApplication().getActiveScreen(); } public void run() { synchronized(UiApplication.getEventLock()) { try{ RichTextField text1player = new RichTextField(this.text, Field.NON_FOCUSABLE); playerscrn.add(text1player); playerscrn.invalidate(); Thread.sleep(this.duration); RichTextField text2player = new RichTextField("hahhaha", Field.NON_FOCUSABLE); playerscrn.add(text2player); playerscrn.invalidate(); Thread.sleep(1000); RichTextField text3player = new RichTextField("Done", Field.NON_FOCUSABLE); playerscrn.add(text3player); playerscrn.invalidate(); }catch(Exception e){ System.out.println("I HAVE AN ERROR"); } } } } With the above code I'm trying to create a small text player. Instead to get all the text labels one by one, something like display text1player wait this.duration milliseconds display text2player wait 1000 milliseconds display text3player thread done. The screens waits this.duration + 1000 milliseconds and displays all the labels at once. I tried with a runnable and calling .invokeLater or .invokeAndWait but I still get the same behavior, and even if I get dirty like above using synchronized it still doesn't work. Does anyone know how I can display each label at a time? Thank you!

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  • Unusually high memory usage on a CentOS VPS with 512 guaranteed RAM

    - by Andrei Bârsan
    I'm working on a medium-sized web application written in PHP that's running on a VPS with 512mb ram. The webapp hasn't been officially launched yet, so there isn't too much traffic going on, just me and a few other people working on it. There is another slightly smaller webapp also hosted on this machine, among 4-5 other small static sites. We are running Centos 5 32-bit & cPanel/WHM. This is the result of running ps aux and, as you can see, it's not using 100% of the RAM. However, on the hypanel overview, it's always shown as using aroun 500MB ram, just for running apache, mysql, and the lowest-memory-footprint versions of the mail server, ftp server etc. -bash-3.2# ps aux USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 1 0.0 0.0 2156 664 ? Ss 12:08 0:00 init [3] root 1123 0.0 0.0 2260 548 ? S<s 12:08 0:00 /sbin/udevd -d root 1462 0.0 0.0 1812 568 ? Ss 12:08 0:00 syslogd -m 0 named 1496 0.0 0.0 3808 820 ? Ss 12:08 0:00 nsd named 1497 0.0 0.0 10672 756 ? S 12:08 0:00 nsd named 1499 0.0 0.0 3880 584 ? S 12:08 0:00 nsd root 1514 0.0 0.1 7240 1064 ? Ss 12:08 0:00 /usr/sbin/sshd root 1522 0.0 0.0 2832 832 ? Ss 12:08 0:00 xinetd -stayalive -pidfile /var/run/xinetd.pid root 1534 0.0 0.1 3712 1328 ? S 12:08 0:00 /bin/sh /usr/bin/mysqld_safe --datadir=/var/lib/mysql - mysql 1667 0.0 2.9 225680 30884 ? Sl 12:08 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql - mailnull 1766 0.0 0.1 9352 1100 ? Ss 12:08 0:00 /usr/sbin/exim -bd -q60m root 1797 0.0 0.0 2156 708 ? Ss 12:08 0:00 /usr/sbin/dovecot root 1798 0.0 0.0 2632 1012 ? S 12:08 0:00 dovecot-auth root 1816 0.0 3.0 38580 32456 ? Ss 12:08 0:01 /usr/local/bin/spamd -d --allowed-ips=127.0.0.1 --pidfi root 1839 0.0 1.6 63200 17496 ? Ss 12:08 0:00 /usr/local/apache/bin/httpd -k start -DSSL root 1846 0.0 0.1 5416 1468 ? Ss 12:08 0:00 pure-ftpd (SERVER) root 1848 0.0 0.1 6212 1244 ? S 12:08 0:00 /usr/sbin/pure-authd -s /var/run/ftpd.sock -r /usr/sbin root 1856 0.0 0.1 4492 1112 ? Ss 12:08 0:00 crond root 1864 0.0 0.0 2356 428 ? Ss 12:08 0:00 /usr/sbin/atd dovecot 1927 0.0 0.1 5196 1952 ? S 12:08 0:00 pop3-login dovecot 1928 0.0 0.1 5196 1948 ? S 12:08 0:00 pop3-login dovecot 1929 0.0 0.1 5316 2012 ? S 12:08 0:00 imap-login dovecot 1930 0.0 0.2 5416 2228 ? S 12:08 0:00 imap-login root 1939 0.0 0.1 3936 1964 ? S 12:08 0:00 cPhulkd - processor root 1963 0.0 0.8 15876 8564 ? S 12:08 0:00 cpsrvd (SSL) - waiting for connections root 1966 0.0 0.7 15172 7748 ? S 12:08 0:00 cpdavd - accepting connections on 2077 and 2078 root 1990 0.0 0.2 5008 3136 ? S 12:08 0:00 queueprocd - wait to process a task root 2017 0.0 2.9 38580 31020 ? S 12:08 0:00 spamd child root 2018 0.0 0.5 8904 5636 ? S 12:08 0:00 /usr/bin/perl /usr/local/cpanel/bin/leechprotect nobody 2021 0.0 3.2 66512 33724 ? S 12:08 0:00 /usr/local/apache/bin/httpd -k start -DSSL nobody 2022 0.0 3.1 67812 33024 ? S 12:08 0:00 /usr/local/apache/bin/httpd -k start -DSSL nobody 2024 0.0 1.9 64364 20680 ? S 12:08 0:00 /usr/local/apache/bin/httpd -k start -DSSL root 2027 0.0 0.4 9000 4540 ? S 12:08 0:00 tailwatchd root 2032 0.0 0.1 4176 1836 ? SN 12:08 0:00 cpanellogd - sleeping for logs nobody 3096 0.0 1.9 64572 20264 ? S 12:09 0:00 /usr/local/apache/bin/httpd -k start -DSSL nobody 3097 0.0 2.8 66008 30136 ? S 12:09 0:00 /usr/local/apache/bin/httpd -k start -DSSL nobody 3098 0.0 2.8 65704 29752 ? S 12:09 0:00 /usr/local/apache/bin/httpd -k start -DSSL nobody 3099 0.0 3.1 67260 32816 ? S 12:09 0:00 /usr/local/apache/bin/httpd -k start -DSSL andrei 3448 0.0 0.1 3204 1632 ? S 12:50 0:00 imap nobody 3537 0.0 1.9 64308 20108 ? S 13:01 0:00 /usr/local/apache/bin/httpd -k start -DSSL nobody 3614 0.0 1.9 64576 20628 ? S 13:10 0:00 /usr/local/apache/bin/httpd -k start -DSSL nobody 3615 0.0 1.3 63200 14672 ? S 13:10 0:00 /usr/local/apache/bin/httpd -k start -DSSL root 3626 0.0 0.2 10232 2964 ? Rs 13:14 0:00 sshd: root@pts/0 root 3648 0.0 0.1 3844 1600 pts/0 Ss 13:14 0:00 -bash root 3826 0.0 0.0 2532 908 pts/0 R+ 13:21 0:00 ps aux Lately, without any significant changes to the configuration, the memory usage started peaking and going over 512, causing the virtual server to kill apache, basically murdering our site in the process. Do you have any idea if this is normal and more resources should be acquired? I don't think... since there isn't too much data or traffic online yet.

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  • What's a good approach to adding debug code to your application when you want more info about what's going wrong?

    - by Andrei
    When our application doesn't work the way we expect it to (e.g. throws exceptions etc.), I usually insert a lot of debug code at certain points in the application in order to get a better overview of what exactly is going on, what the values for certain objects are, to better trace where this error is triggered from. Then I send a new installer to the user(s) that are having the problem and if the problem is triggered again I look at the logs and see what they say. But I don't want all this debug code to be in the production code, since this would create some really big debug files with information that is not always relevant. The other problem is that our code base changes, and the next time, the same debug code might have to go in different parts of the application. Questions Is there a way to merge this debug code within the production code only when needed and have it appear at the correct points within the application? Can it be done with a version control system like git so that all would be needed is a git merge? P.S. The application I'm talking about now is .NET, written in C#.

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  • Why does XFBML work everywhere but in Chrome?

    - by Andrei
    I try to add simple Like button to my Facebook Canvas app (iframe). The button (and all other XFBML elements) works in Safari, Firefox, Opera, but in Google Chrome. How can I find the problem? EDIT1: This is ERB-layout in my Rails app <html xmlns:fb='http://www.facebook.com/2008/fbml' xmlns='http://www.w3.org/1999/xhtml'> ... <body> ... <div id="fb-root"></div> <script> window.fbAsyncInit = function() { FB.init({ appId: '<%= @app_id %>', status: true, cookie: true, xfbml: true }); FB.XFBML.parse(); }; (function() { var e = document.createElement('script'); e.async = true; e.src = document.location.protocol + '//connect.facebook.net/en_US/all.js#appId=<%=@app_id%>&amp;amp;xfbml=1'; document.getElementById('fb-root').appendChild(e); }()); FB.XFBML.parse(); </script> <fb:like></fb:like> ... JS error message in Chrome inspector: Uncaught ReferenceError: FB is not defined (anonymous function) Uncaught TypeError: Cannot call method 'appendChild' of null window (anonymous function) Probably similar to http://forum.developers.facebook.net/viewtopic.php?id=84684

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  • Per-Thread Visibility PHPBB

    - by Andrei Krotkov
    I'm trying to implement a registration system for a board I'm running, and I want a forum where every thread is invisible to everyone but the person who started it and the moderator staff. I want the staff to be able to post and for the person registering to respond, but I haven't been able to find a per-post visibility solution. Are there any mods that perform this task, or is there a hidden setting in the software somewhere?

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  • What language should I use for making a cross platform library?

    - by Andrei
    I want to build a SyncML parsing library (no UI) which should be able to build up messages based on information provided by the host application, fed in by the library's methods. Also, the library should to be able to do callbacks to methods in the host application. I want to be able to compile this and have it available on as many platforms as possible: Windows, Windows Phone 7 OS, OSX, iOS, Linux, Android, BlackBerry. Basically as many platforms as possible. The priority is to have this available on mobile devices. Questions: What setup should I use? (programming languages, compilers, IDE etc.) How would I compile this library for these different platforms and how would I connect to it? Any other info? e.g. articles that cover the subject of cross-platform development? I haven't done this sort of a cross-platform project before, so any available information to put me in the right direction would be welcomed. Myself, I have a background in C#/.NET and Objective-C.

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  • Why do some large companies use a different domain for sending emails?

    - by Andrei Rinea
    I've received notifications and newsletters from Microsoft and Facebook in the past and noticed that both emails came not from an address such as [email protected] or [email protected]. Not event [email protected] but both had different domains such as : [email protected] and [email protected] Why is this? Any particular advantage in doing so? Other than not polluting the employees email software, I can't see.

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  • ALT+SysRq+REISUB hangs at "resetting" (without actually resetting/restarting) in Maverick

    - by Andrei
    I'm trying ALT+SysRq+REISUB to see how it would be used to restart my system safely in case of emergency. However, I find that ALT+SysRq+REISUB hangs at "resetting" (without actually resetting/restarting) in Maverick. All other SysRq combinations appear to work correctly (i.e. ALT+SysRq+REISU). cat /proc/sys/kernel/sysrq returns 0. But I'm not sure it's relevant because ALT+SysRq certainly works. What can I do to have "B" actually restart the system? Thanks!

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  • Life and Career guidance

    - by Andrei TheGiant Haxtor
    Hello programmers. I have a current dilemma I'm pondering over. I will be graduating from high school with ~60 credits worth of community college work (pre-engineering courses), and I am wondering what would experienced programmers suggest I do with my time since I have all of the bull courses out of the way. Should I start taking computer science/engineering courses or should I take some other courses that interest me?(psych, math) The reason I am asking this is, well , I like doing a lot of self studying, especially relating to software and tech. I don't like to have the pressure of hard classes on me, so I could make up for the time lost doing the CC courses and dive deep in programming and books. I've started getting into programming recently unfortunately, since I didn't have much time b/c of my course load. Right now I am doing Java and messing around with android. I would like to get involved in web&mobile development, operating systems, and finance software. If any of you experienced people could please give me some guidance and words of wisdom, I would greatly appreciated. Sorry that this isn't necessarily related to programming. All the best.

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  • Unity Bar auto-hide behaviour and application icons placement

    - by Andrei
    The first issue: It seems that sometimes when I hover to the left edge of the screen the Unity Bar will not stay on top of other windows even if I continue to hover the cursor above it, at other times it will stay on top. Is this a normal behaviour? Or am I affected by some bug / inconsistency? If it's normal, what's the logic behind it? The second issue: Application icons for running applications do not maintain their position in the Unity Bar but instead move around according to some weird rules (if any?) that I can't understand. Is this to be expected, or is it a bug? Is there a way to force them to stop moving around? I like to see certain apps in certain positions and this bothers me.

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  • How can I start Busybox at boot time, from GRUB, or even before GRUB?

    - by Andrei
    Most Busybox questions are related to the fact that users are dropped to a Busybox shell due to some unknown issues at boot time. This must make Busybox one of the most hated pieces of software. My problem is the opposite. I want to deliberately start Busybox at boot time either from GRUB, or even before GRUB. Is this possible? How can I do it? The purpose is to execute some commands before the boot sequence is reinitiated. So basically I want to execute some commands to make some hardware available to the bootloader.

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  • SysRq+REISUB hangs at "resetting" (without actually resetting/restarting) in Maverick

    - by Andrei
    I'm trying SysRq+REISUB to see how it would be used to restart my system safely in case of emergency. However, I find that SysRq+REISUB hangs at "resetting" (without actually resetting/restarting) in Maverick. All other SysRq combinations appear to work correctly (i.e. SysRq+REISU). cat /proc/sys/kernel/sysrq returns 0. But I'm not sure it's relevant because SysRq certainly works. What can I do to have "B" actually restart the system? Thanks!

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  • time it takes to develop 4*N lines of code. Nonlinear, but how nonlinear ?

    - by Andrei
    It took me time T to develop program A, 1000 lines of code (SLOC), in certain language/area/complexity. Then how much time it will take to develop program B which is expected 4000 lines, in same area/complexity/language ? I expect it to be 4*N, right ? Any formula how T grows with SLOC ? For contractor, these estimates are important. Is there formula from software enginering books, or from people's experience ? Also, what methods exist to make the code bug-free before it hits QA ?

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