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• Visual Studio &amp; TFS 11 &ndash; List of extensions and upgrades

  - by terje

  This post is a list of the extensions I recommend for use with Visual Studio 11. It’s coming up all the time – what to install, where are the download sites, last version, etc etc, and thus I thought it better to post it here and keep it updated. The basics are Visual Studio 11 connected to a Team Foundation Server 11. Note that we now are at Beta time, and that also many live in a side-by-side environment with Visual Studio 2010.  The side-by-side is supported by VS 11. However, if you installed a component supporting VS11 before you installed VS11, then you need to reinstall it.  The VSIX installer will understand that it is to apply those only for VS11, and will not touch – nor remove – the same for VS2010. A good example here is the Power Commands. The list is more or less in priority order. The focus is to get a setup which can be used for a complete coding experience for the whole ALM process. The list of course reflects what I use for my work , so it is by no means complete, and for some of the tools there are equally useful alternatives. Many components have not yet arrived with VS11 support.  I will add them as they arrive.  The components directly associated with Visual Studio from Microsoft should be common, see the Microsoft column. If you still need the VS2010 extensions, here they are: The extensions for VS 2010.   Components ready for VS 11, both upgrades and new ones Product Notes Latest Version License Applicable to Microsoft TFS Power Tools Beta 111 Side-by-side with TFS 2010 should work, but remove the Shell Extension from the TFS 2010 power tool first. March 2012(11.0.50321.0) Free TFS integration Yes ReSharper EAP for Beta 11 (updates very often, nearly daily) 7.0.3.261 pr. 16/3/2012 Free as EAP, Licensed later Coding & Quality No Power Commands1 Just reinstall, even if you already have it for VS2010. The reinstall will then apply it to VS 11 1.0.2.3 Free Coding Yes Visualization and Modelling SDK for beta Info here and here. Another download site and info here. Also download from MSDN Subscription site. Requires VS 11 Beta SDK 11 Free now, otherwise Part of MSDN Subscription Modeling Yes Visual Studio 11 Beta SDK Published 16.2.2012     Yes Visual Studio 11 Feedback tool1 Use this to really ease the process of sending bugs back to Microsoft. 1.1 Free as prerelase Visual Studio Yes             #1 Get via Visual Studio’s Tools | Extension Manager (or The Code Gallery). (From Adam : All these are auto updated by the Extension Manager in Visual Studio) #2 Works with ultimate only Components we wait for, not yet in a VS 11 version Product Notes Latest Version License Applicable to Microsoft       Coding Yes Inmeta Build Explorer     Free TFS integration No Build Manager Community Build Manager. Info here from Jakob   Free TFS Integration No Code Contracts Coming real soon   Free Coding & Quality Yes Code Contracts Editor Extensions     Free Coding & Quality Yes Web Std Update     Free Coding (Web) Yes (MSFT) Web Essentials     Free Coding (Web) Yes (MSFT) DotPeek It says up to .Net 4.0, but some tests indicates it seems to be able to handle 4.5. 1.0.0.7999 Free Coding/Investigation No Just Decompile Also says up to .net 4.0   Free Coding/Investigation No dotTrace     Licensed Quality No NDepend   Licensed Quality No tangible T4 editor     Lite version Free (Good enough) Coding (T4 templates) No Pex Moles are now integrated and improved in VS 11 as a new library called Fakes.     Coding & Unit Testing Yes Components which are now integrated into VS 11 Product Notes Productivity Power Tools Features integrated into VS11, with a few exceptions, I don’t think you will miss those. Fakes  Was Moles in 2010. Fakes is improved and made into a product.  NuGet Manager Included in the install, but still an extension package. Info here. Product installation, upgrades and patches for VS/TFS 11   Product Notes Date Applicable to Visual Studio 11 & TFS 11 Beta This is the beta release, and you are free to download and try it out. March 2012 Visual Studio and TFS SQL Server 2008 R2 SP1 Cumulative Update 4 The TFS 11 requires the CU1 at least, but you should go up to at least CU4, since this update solves a ghost record problem that otherwise may cause your TFS database to not release records the way it should when you clean it up, see this post for more information on that issue.  Oct 2011 SQL Server 2008 R2 SP1

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• Script to set NO_HEARTBEAT Flag

  - by Koppar

  The new plugin provides some flags to help debug the browser side VM. Below are the flags: JPI_PLUGIN2_DEBUG=1JPI_PLUGIN2_VERBOSE=1 The above 2 provide tracing information JPI_PLUGIN2_NO_HEARTBEAT = 1 This disables sending of  heartbeat messages between browser side VM and the client JVM instance(s). This lets the client JVM stay independent of browser side VM. These are to be set as system environment variables. Many a times we are required to set them using scripts. Here is a small script to achieve the same: -----------set_jpi_flags.vbs------------------------------------------ Set WSHShell = WScript.CreateObject("WScript.Shell")Set WshEnv = WshShell.Environment("USER")WshEnv("JPI_PLUGIN2_NO_HEARTBEAT") = "1"WshEnv("JPI_PLUGIN2_DEBUG") = "1"WshEnv("JPI_PLUGIN2_VERBOSE") = "1"WScript.Echo WshEnv("JPI_PLUGIN2_NO_HEARTBEAT")   ---- displays the value of the NO_HEARTBEAT var ---------------------------------------------------------------------------

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• What is the difference between Output Text and Output Text (Active)?

  - by [email protected]

  When building an ADF Faces application in JDeveloper, you might have noticed that in the Component Palette there is an option for both "Output Text" as well as "Output Text (Active)".   Why do we have both of these options?Under the covers, there are actually two tags, af:outputText and af:activeOutputText.  Similarly, there is an active version of af:image, namely af:activeImage, and an active version of af:commandToolbarButton, af:activeCommandToolbarButton.In the vast majority of cases, developers should use the non-active version of the components.   The active version of the components are there to support specific usecases around Server Side Push using the Active Data Service feature.  Most of our customers don't use Server Side Push, and hence do not need the active version of the components.  You can learn more about Server Side Push with ADF Active Data Service in this blog.By using the active version of af:outputText, af:image or af:commandToolbarButton when you don't need to, you are taking a performance hit that is unnecessary.

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• Firefox 4 on 10.10

  - by Oxwivi

  I installed Firefox 4 from the daily builds PPA, and it doesn't seem to be the latest RC, and tells me that I'd better update to it. How come a daily build is behind snapshot releases like beta or RC? I used the profile for my Firefox 4 on Windows, and the Global Menu (or whatever it's called) has gone to the right side. I had a few app tabs saved in the profile. What gives? How do I get the Global Menu to be orange or whatever color it's supposed to be? How do I pin it to Unity? Update Global Menu back on left side after restoring toolbar to defaults. However it's noteworthy that I could not drag it to the other side while the customization window was open unlike the other elements.

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• Organizing ASP.Net Single Page Application with Nancy

  - by OnesimusUnbound

  As a personal project, I'm creating a single page, asp.net web application using Nancy to provide RESTful services to the single page. Due to the complexity of the single page, particularly the JavaScripts used, I've think creating a dedicated project for the client side of web development and another for service side will organize and simplify the development. solution | +-- web / client side (single html page, js, css) | - contains asp.net project, and nancy library | to host the modules in application project folder | +-- application / service (nancy modules, bootstrap for other layer) | . . . and other layers (three tier, domain driven, etc) . Is this a good way of organizing a complex single page application? Am I over-engineering the web app, incurring too much complexity?

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• How to explain to non-technical person why the task will take much longer then they think?

  - by Mag20

  Almost every developer has to answer questions from business side like: Why is going to take 2 days to add this simple contact form? When developer estimates this task, they may divide it into steps: make some changes to Database optimize DB changes for speed add front end HTML write server side code add validation add client side javascript use unit tests make sure SEO is setup is working implement email confirmation refactor and optimize the code for speed ... These maybe hard to explain to non-technical person, who basically sees the whole task as just putting together some HTML and creating a table to store the data. To them it could be 2 hours MAX. So is there a better way to explain why the estimate is high to non-developer?

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• Online & Offline in Web Chat Application

  - by Mohammed Safeer

  I stuck amidst developing a chat web application using php for client side app. I used comet for chat application. And use technique of updating database when someone logout. Thus display offline on other side user. My problem is if someone close browser without logout, how the other side user know the person goes offline. How can i set online and offline icon in a php webchat application, when someone close chat window without logout? Is web sockets in php solve this problem? welcome all suggestions.

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• How to write functionally in a web framework

  - by Kevin Burke

  I love Rich Hickey, Clojure and Haskell and I get it when he talks about functions and the unreliability of side-effecting code. However I work in an environment where nearly all the functions I write have to read from the database, write to the database, make HTTP requests, decrement a user's balance, modify a frontend HTML component based on a click action, return different results based on the URI or the POST body. We also use PHP for the frontend, which is littered with functions like parse_str(), which modifies an object in place. All of these are side-effecting to one degree or another. Given these constraints and the side-effecting nature of the logic I'm coding, what can I do to make my code more reliable and function-able?

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• Organazing ASP.Net Single Page Application with Nancy

  - by OnesimusUnbound

  As a personal project, I'm creating a single page, asp.net web application using Nancy to provide RESTful services to the single page. Due to the complexity of the single page, particularly the JavaScripts used, I've think creating a dedicated project for the client side of web development and another for service side will organize and simplify the development. solution | +-- web / client side (single html page, js, css) | - contains asp.net project, and nancy library | to host the modules in application ptoject folder | +-- application / service (nancy modules, bootstrap for other layer) | . . . and other layers (three teir, domain driven, etc) . Is this a good way of organizing a complex single page application? Am I over-engineering the web app, incurring too much complexity?

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• Low complexity shader to indicate the sides of a polyline

  - by Pris

  I have a bunch of polylines that I draw using GL_LINES. They can have thousands of points. They actually represent the separation of land and water on a map. I don't have complete polygons, just the ordered set of points. I'm looking for a neat but efficient way to visually convey Side A and Side B as being different. For example I could offset the polyline in one direction a few times and fade it out (but every offset is doubling the number of points), or offset it once to make a "ribbon" and give one side a 'glow' like effect to mimic the outer glow or shadow of a polygon). This is for a mobile application and I'm using OpenGL ES 2. I'd like to keep the effect as simple as possible from a complexity stand point. I'm looking for some additional ideas; maybe there's a clever shader technique out there or a visual effect I haven't considered.

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• Assignment of roles in communication when sides could try to cheat

  - by 9000

  Assume two nodes in a peer-to-peer network initiating a communication. In this communication, one node has to serve as a "sender", another as a "receiver" (role names are arbitrary here). I'd like the nodes to assert either role with approximately equal probability. That is, in N communications with various other nodes a given node would assume the "sender" role roughly N/2 times. Since there's no third-party arbiter available, nodes should agree on their roles by exchanging messages. The catch is that we can encounter a rogue node which would try to become the "receiver" in most or all cases, and coax the other side to always serve as a "sender". I'm looking for an algorithm to assign roles to sides of communication so that no side could get a predetermined role with high probability. It's OK for the side which is trying to cheat to fail to communicate.

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• Convert Your Workspace to Standing Height for $22

  - by Jason Fitzpatrick

  If you’d love to try out a standing workstation but you don’t want to shell out $$$ to buy or build one, this simple $22 project will raise up your workspace surface on the cheap. All you need is a LACK side table, some shelf brackets, a shelf, and some screws. The side table goes on your desk, the monitors go on the side table, and the keyboard and mouse go on the shelf (mounted to the brackets that have been positioned at the perfect height for your forearms). Hit up the link below for more pictures, tips, and a downloadable build guide. IKEA Standing Desk for $22 [via Unpluggd] How to Banish Duplicate Photos with VisiPic How to Make Your Laptop Choose a Wired Connection Instead of Wireless HTG Explains: What Is Two-Factor Authentication and Should I Be Using It?

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• How to add a shortcut for Humble Bundle games in Unity?

  - by waspinator

  I downloaded some games from the humblebundle, but most of them don't have deb files. They run fine after extracting them and double clicking on the executable, but unity doesn't automatically find them so I can't search for them, or add them to the side bar. I tried to drag the executable onto the side bar, but it just dimmed and didn't do anything once I dropped it. I also tried to right-click on the executable in and clicked on "Make Link", but I couldn't drop that onto the side bar either. I would prefer a solution that does not require using the terminal or editing configuration files by hand if possible.

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• Set vertex position

  - by user1806687

  Can anyone tell me how to set the positions of model vertices? I want to be able to change the position of some of the vertices of a Model. Is there any way to make that happen? And make the changed visible at that moment. EDIT: Well, the thing is,I have a model, a cube, that is made up of four "thin" cubes(top,bottom,left side, right side), so I get this cube with "hole" in the middle. And I want to scale it on Y axis. If I do Scale(0,2,0) it will scale the whole object meaning, it will double the Y size of left and right side, but also double the size of the top and bottom cube, which I do not want. Same for X axis I want to double the size of top and bottom cubes but not the left and right one. Hope you can help

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• can rsyslog transfer files present in a directory

  - by Tarun

  I have configured rsyslog and its working fine as its intended to be this is the conf files: Server Side: $template OTHERS,"/rsyslog/test/log/%fromhost-ip%/others-log.log" $template APACHEACCESS,"/rsyslog/test/log/%fromhost-ip%/apache-access.log" $template APACHEERROR,"/rsyslog/test/log/%fromhost-ip%/apache-error.log" if $programname == 'apache-access' then ?APACHEACCESS & ~ if $programname == 'apache-error' then ?APACHEERROR & ~ *.* ?OTHERS Client Side: # Apache default access file: $ModLoad imfile $InputFileName /var/log/apache2/access.log $InputFileTag apache-access: $InputFileStateFile stat-apache-access $InputFileSeverity info $InputRunFileMonitor #Apache default Error file: $ModLoad imfile $InputFileName /var/log/apache2/error.log $InputFileTag apache-error: $InputFileStateFile stat-apache-error $InputFileSeverity error $InputRunFileMonitor if $programname == 'apache-access' then @10.134.125.179:514 & ~ if $programname == 'apache-error' then @10.134.125.179:514 & ~ *.* @10.134.125.179:514 Now in rsyslog can I instead of defining separate files can I give the complete directory so that the client sends all the log files automatically present in the directory /var/log/apache2 and on syslog server side these files gets automatically stored in different filenames?

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• OpenVPN IPv6 over IPv4 tunnel

  - by user66779

  Today I installed OpenVPN 2.3rc2 on both my windows 7 client machine and centos 6 server. This new version of OpenVPN provides full compatibility for IPv6. The Problem: I am currently able to connect to the server (through the IPv4 tunnel) and ping the IPv6 address which is assigned to my client and I can also ping the tun0 interface on the server. However, I cannot browse to any IPv6 websites. My vps provider has given me this: 2607:f840:0044:0022:0000:0000:0000:0000/64 is routed to this server (2607:f840:0:3f:0:0:0:eda). This is ifconfig after setup with OpenVPN running: eth0 Link encap:Ethernet HWaddr 00:16:3E:12:77:54 inet addr:208.111.39.160 Bcast:208.111.39.255 Mask:255.255.255.0 inet6 addr: 2607:f740:0:3f::eda/64 Scope:Global inet6 addr: fe80::216:3eff:fe12:7754/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:2317253 errors:0 dropped:7263 overruns:0 frame:0 TX packets:1977414 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1696120096 (1.5 GiB) TX bytes:1735352992 (1.6 GiB) Interrupt:29 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:10.8.0.1 P-t-P:10.8.0.2 Mask:255.255.255.255 inet6 addr: 2607:f740:44:22::1/64 Scope:Global UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1 RX packets:739567 errors:0 dropped:0 overruns:0 frame:0 TX packets:1218240 errors:0 dropped:1542 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:46512557 (44.3 MiB) TX bytes:1559930874 (1.4 GiB) So OpenVPN is sucessfully creating a tun0 interface and assigning clients IPv6 addresses using 2607:f840:44:22::/64. The first client to connect is getting 2607:f840:44:22::1000 and the second 2607:f840:44:22::1001, and so on... plus 1 each time. After connecting as the first client, I can ping from my windows client machine 2607:f740:44:22::1 and 2607:f740:44:22::1000. However, I have no access to IPv6 websites. I believe the problem is that the tun0 IPv6 addressees are not being forwarded to the eth0 interface. This is the firewall running on the server: #!/bin/sh # # iptables configuration script # # Flush all current rules from iptables # iptables -F iptables -t nat -F # # Allow SSH connections on tcp port 22 # iptables -A INPUT -i eth0 -p tcp --dport 22 -j ACCEPT iptables -A OUTPUT -o eth0 -p tcp --sport 22 -j ACCEPT # # Set access for localhost # iptables -A INPUT -i lo -j ACCEPT # # Accept connections on 1195 for vpn access from client # iptables -A INPUT -i eth0 -p udp --dport 1195 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A OUTPUT -o eth0 -p udp --sport 1195 -m state --state ESTABLISHED -j ACCEPT # # Apply forwarding for OpenVPN Tunneling # iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT iptables -A FORWARD -s 10.8.0.0/24 -j ACCEPT iptables -t nat -A POSTROUTING -o eth0 -j SNAT --to 209.111.39.160 iptables -A FORWARD -j REJECT # # Enable forwarding # echo 1 > /proc/sys/net/ipv4/ip_forward # # Set default policies for INPUT, FORWARD and OUTPUT chains # iptables -P INPUT ACCEPT iptables -P FORWARD ACCEPT iptables -P OUTPUT ACCEPT # # IPv6 # IP6TABLES=/sbin/ip6tables $IP6TABLES -F INPUT $IP6TABLES -F FORWARD $IP6TABLES -F OUTPUT echo -n "1" >/proc/sys/net/ipv6/conf/all/forwarding echo -n "1" >/proc/sys/net/ipv6/conf/all/proxy_ndp echo -n "0" >/proc/sys/net/ipv6/conf/all/autoconf echo -n "0" >/proc/sys/net/ipv6/conf/all/accept_ra $IP6TABLES -A INPUT -i eth0 -m state --state ESTABLISHED,RELATED -j ACCEPT $IP6TABLES -A INPUT -i eth0 -p tcp --dport 22 -j ACCEPT $IP6TABLES -A INPUT -i eth0 -p icmpv6 -j ACCEPT $IP6TABLES -P INPUT ACCEPT $IP6TABLES -P FORWARD ACCEPT $IP6TABLES -P OUTPUT ACCEPT Server.conf: server-ipv6 2607:f840:44:22::/64 server 10.8.0.0 255.255.255.0 port 1195 proto udp dev tun ca ca.crt cert server.crt key server.key dh dh2048.pem ifconfig-pool-persist ipp.txt push "redirect-gateway def1 bypass-dhcp" push "dhcp-option DNS 208.67.222.222" push "dhcp-option DNS 208.67.220.220" keepalive 10 60 tls-auth ta.key 0 cipher AES-256-CBC comp-lzo user nobody group nobody persist-key persist-tun status openvpn-status.log log-append openvpn.log verb 5 Client.conf: client dev tun nobind keepalive 10 60 hand-window 15 remote 209.111.39.160 1195 udp persist-key persist-tun ca ca.crt key client1.key cert client1.crt remote-cert-tls server tls-auth ta.key 1 comp-lzo verb 3 cipher AES-256-CBC I'm not sure where I am going wrong, it could be the firewall, or something missing from server or client.conf. This version of OpenVPN was only released yesterday, and there's little info on the internet about how to setup an IPv6 over IPv4 vpn tunnel. I've read the manual for this new version of OpenVPN (parts pertaining to IPv6) and it provides very little info too. Thanks for any help.

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• How do you stay motivated for hobby projects?

  - by aubreyrhodes

  I started seriously programming as a hobbiest, student and then intern about 4 years ago and I've always done small projects on the side as a learning exercise. Schools over now though, and I spend my days at work as a software developer. I would still love to do projects on the side to learn about areas in computer science that I'm not exposed to at work, but I've noticed that after 8 hours of starring at an IDE it's far to tempting to veg out. Any time I do get up the gumption to work on something for a few hours lately it's gotten left by the wayside. Anyone have any advice for sticking with side projects when you spend most of your day coding?

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• Choosing a new programming language to learn [on hold]

  - by Xelom

  I'm a Microsoft Stack(ASP.NET, C#) developer. Mainly, I develop server side software, windows services, restful apis etc. My client side interaction is really really low. So aside from C# I want to learn a new language. Time is precious and I want to give my focus to a language which have a future. My language list is: Scala (Powerful usage in Twitter) Go (Getting popular and channels are pretty awesome) Erlang (Stable server side programs. Used at Whatsapp) You can give advice for the above or you can give me a better option. My only exception is Objective-C. I don't want to get in that one. Thanks

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• How do you stay motivated for hobby projects? [closed]

  - by aubreyrhodes

  I started seriously programming as a hobbiest, student and then intern about 4 years ago and I've always done small projects on the side as a learning exercise. Schools over now though, and I spend my days at work as a software developer. I would still love to do projects on the side to learn about areas in computer science that I'm not exposed to at work, but I've noticed that after 8 hours of starring at an IDE it's far to tempting to veg out. Any time I do get up the gumption to work on something for a few hours lately it's gotten left by the wayside. Anyone have any advice for sticking with side projects when you spend most of your day coding?

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• How easy is it to change languages/frameworks professionally? [closed]

  - by user924731

  Forgive me for asking a career related question - I know that they can be frowned upon here, but I think that this one is general enough to be useful to many people. My question is: How easy/difficult is it to get a job using language/frameowork B, when your current job uses language/framework A? e.g. If you use C#/ASP.NET in your current job, how difficult would it be to get a job using python/django, or PHP/Zend, or whatever (the specifics of the example don't matter). Relatedly, if you work in client side scripting, but perhaps work on server-side projects in your own time, how difficult would it be to switch to server-side professionally? So, to sum up, does the choice of which languages/frameworks use at work tend to box you in professionally?

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• Jumbled byte array after using TcpClient and TcpListener

  - by Dylan

  I want to use the TcpClient and TcpListener to send an mp3 file over a network. I implemented a solution of this using sockets, but there were some issues so I am investigating a new/better way to send a file. I create a byte array which looks like this: length_of_filename|filename|file This should then be transmitted using the above mentioned classes, yet on the server side the byte array I read is completely messed up and I'm not sure why. The method I use to send: public static void Send(String filePath) { try { IPEndPoint endPoint = new IPEndPoint(Settings.IpAddress, Settings.Port + 1); Byte[] fileData = File.ReadAllBytes(filePath); FileInfo fi = new FileInfo(filePath); List<byte> dataToSend = new List<byte>(); dataToSend.AddRange(BitConverter.GetBytes(Encoding.Unicode.GetByteCount(fi.Name))); // length of filename dataToSend.AddRange(Encoding.Unicode.GetBytes(fi.Name)); // filename dataToSend.AddRange(fileData); // file binary data using (TcpClient client = new TcpClient()) { client.Connect(Settings.IpAddress, Settings.Port + 1); // Get a client stream for reading and writing. using (NetworkStream stream = client.GetStream()) { // server is ready stream.Write(dataToSend.ToArray(), 0, dataToSend.ToArray().Length); } } } catch (ArgumentNullException e) { Debug.WriteLine(e); } catch (SocketException e) { Debug.WriteLine(e); } } } Then on the server side it looks as follows: private void Listen() { TcpListener server = null; try { // Setup the TcpListener Int32 port = Settings.Port + 1; IPAddress localAddr = IPAddress.Parse("127.0.0.1"); // TcpListener server = new TcpListener(port); server = new TcpListener(localAddr, port); // Start listening for client requests. server.Start(); // Buffer for reading data Byte[] bytes = new Byte[1024]; List<byte> data; // Enter the listening loop. while (true) { Debug.WriteLine("Waiting for a connection... "); string filePath = string.Empty; // Perform a blocking call to accept requests. // You could also user server.AcceptSocket() here. using (TcpClient client = server.AcceptTcpClient()) { Debug.WriteLine("Connected to client!"); data = new List<byte>(); // Get a stream object for reading and writing using (NetworkStream stream = client.GetStream()) { // Loop to receive all the data sent by the client. while ((stream.Read(bytes, 0, bytes.Length)) != 0) { data.AddRange(bytes); } } } int fileNameLength = BitConverter.ToInt32(data.ToArray(), 0); filePath = Encoding.Unicode.GetString(data.ToArray(), 4, fileNameLength); var binary = data.GetRange(4 + fileNameLength, data.Count - 4 - fileNameLength); Debug.WriteLine("File successfully downloaded!"); // write it to disk using (BinaryWriter writer = new BinaryWriter(File.Open(filePath, FileMode.Append))) { writer.Write(binary.ToArray(), 0, binary.Count); } } } catch (Exception ex) { Debug.WriteLine(ex); } finally { // Stop listening for new clients. server.Stop(); } } Can anyone see something that I am missing/doing wrong?

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• Issue with translating a delegate function from c# to vb.net for use with Google OAuth 2

  - by Jeremy

  I've been trying to translate a Google OAuth 2 example from C# to Vb.net for a co-worker's project. I'm having on end of issues translating the following methods: private OAuth2Authenticator<WebServerClient> CreateAuthenticator() { // Register the authenticator. var provider = new WebServerClient(GoogleAuthenticationServer.Description); provider.ClientIdentifier = ClientCredentials.ClientID; provider.ClientSecret = ClientCredentials.ClientSecret; var authenticator = new OAuth2Authenticator<WebServerClient>(provider, GetAuthorization) { NoCaching = true }; return authenticator; } private IAuthorizationState GetAuthorization(WebServerClient client) { // If this user is already authenticated, then just return the auth state. IAuthorizationState state = AuthState; if (state != null) { return state; } // Check if an authorization request already is in progress. state = client.ProcessUserAuthorization(new HttpRequestInfo(HttpContext.Current.Request)); if (state != null && (!string.IsNullOrEmpty(state.AccessToken) || !string.IsNullOrEmpty(state.RefreshToken))) { // Store and return the credentials. HttpContext.Current.Session["AUTH_STATE"] = _state = state; return state; } // Otherwise do a new authorization request. string scope = TasksService.Scopes.TasksReadonly.GetStringValue(); OutgoingWebResponse response = client.PrepareRequestUserAuthorization(new[] { scope }); response.Send(); // Will throw a ThreadAbortException to prevent sending another response. return null; } The main issue being this line: var authenticator = new OAuth2Authenticator<WebServerClient>(provider, GetAuthorization) { NoCaching = true }; The Method signature reads as for this particular line reads as follows: Public Sub New(tokenProvider As TClient, authProvider As System.Func(Of TClient, DotNetOpenAuth.OAuth2.IAuthorizationState)) My understanding of Delegate functions in VB.net isn't the greatest. However I have read over all of the MSDN documentation and other relevant resources on the web, but I'm still stuck as to how to translate this particular line. So far all of my attempts have resulted in either the a cast error (see below) or no call to GetAuthorization. The Code (vb.net on .net 3.5) Private Function CreateAuthenticator() As OAuth2Authenticator(Of WebServerClient) ' Register the authenticator. Dim client As New WebServerClient(GoogleAuthenticationServer.Description, oauth.ClientID, oauth.ClientSecret) Dim authDelegate As Func(Of WebServerClient, IAuthorizationState) = AddressOf GetAuthorization Dim authenticator = New OAuth2Authenticator(Of WebServerClient)(client, authDelegate) With {.NoCaching = True} 'Dim authenticator = New OAuth2Authenticator(Of WebServerClient)(client, GetAuthorization(client)) With {.NoCaching = True} 'Dim authenticator = New OAuth2Authenticator(Of WebServerClient)(client, New Func(Of WebServerClient, IAuthorizationState)(Function(c) GetAuthorization(c))) With {.NoCaching = True} 'Dim authenticator = New OAuth2Authenticator(Of WebServerClient)(client, New Func(Of WebServerClient, IAuthorizationState)(AddressOf GetAuthorization)) With {.NoCaching = True} Return authenticator End Function Private Function GetAuthorization(arg As WebServerClient) As IAuthorizationState ' If this user is already authenticated, then just return the auth state. Dim state As IAuthorizationState = AuthState If (Not state Is Nothing) Then Return state End If ' Check if an authorization request already is in progress. state = arg.ProcessUserAuthorization(New HttpRequestInfo(HttpContext.Current.Request)) If (state IsNot Nothing) Then If ((String.IsNullOrEmpty(state.AccessToken) = False Or String.IsNullOrEmpty(state.RefreshToken) = False)) Then ' Store Credentials HttpContext.Current.Session("AUTH_STATE") = state _state = state Return state End If End If ' Otherwise do a new authorization request. Dim scope As String = AnalyticsService.Scopes.AnalyticsReadonly.GetStringValue() Dim _response As OutgoingWebResponse = arg.PrepareRequestUserAuthorization(New String() {scope}) ' Add Offline Access and forced Approval _response.Headers("location") += "&access_type=offline&approval_prompt=force" _response.Send() ' Will throw a ThreadAbortException to prevent sending another response. Return Nothing End Function The Cast Error Server Error in '/' Application. Unable to cast object of type 'DotNetOpenAuth.OAuth2.AuthorizationState' to type 'System.Func`2[DotNetOpenAuth.OAuth2.WebServerClient,DotNetOpenAuth.OAuth2.IAuthorizationState]'. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidCastException: Unable to cast object of type 'DotNetOpenAuth.OAuth2.AuthorizationState' to type 'System.Func`2[DotNetOpenAuth.OAuth2.WebServerClient,DotNetOpenAuth.OAuth2.IAuthorizationState]'. I've spent the better part of a day on this, and it's starting to drive me nuts. Help is much appreciated.

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• Socket in C: recv overwrite a char[]

  - by Possa

  Hi all, I'm trying to make a little client-server script like many others that I've done in the past. But in this one I have a problem. It is better if I post the code and the output it give me. Code: #include <mysql.h> //not important now #include <stdlib.h> #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #include <arpa/inet.h> #include <netdb.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <signal.h> #include <string.h> //constant definition #define SERVER_PORT 2121 #define LINESIZE 21 //global var definition char victim_ip[LINESIZE], file_write[LINESIZE], hacker_ip[LINESIZE]; //function void leggi (int); //not use now for debugging purpose //void scriviDB (); //not important now main () { int sock, client_len, fd; struct sockaddr_in server, client; // transport end point if((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) { perror("system call socket fail"); exit(1); } server.sin_family = AF_INET; server.sin_addr.s_addr = inet_addr("10.10.10.1"); server.sin_port = htons(SERVER_PORT); // binding address at transport end point if (bind(sock, (struct sockaddr *)&server, sizeof server) == -1) { perror("system call bind fail"); exit(1); } //fprintf(stderr, "Server open: listening.\n"); listen(sock, 5); /* managae client connection */ while (1) { client_len = sizeof(client); if ((fd = accept(sock, (struct sockaddr *)&client, &client_len)) < 0) { perror("accepting connection"); exit(1); } strcpy(hacker_ip, inet_ntoa(client.sin_addr)); printf("1 %s\n", hacker_ip); //debugging purpose //leggi(fd); ////////////////////////// //receive client recv(fd, victim_ip, LINESIZE, 0); victim_ip[sizeof(victim_ip)] = '\0'; printf("2 %s\n", hacker_ip); //debugging purpose recv(fd, file_write, LINESIZE, 0); file_write[sizeof(file_write)] = '\0'; printf("3 %s\n", hacker_ip); //debugging purpose printf("%s@%s for %s\n", file_write, victim_ip, hacker_ip); //send to client send(fd, hacker_ip, 40, 0); //now is hacker_ip for debug ///////////////////////// close(fd); }//end while exit(0); } //end main Client send string: ./send -i 10.10.10.4 -f filename.ext so the script send -i (IP) and -f (FILE) at the server. Here's my output server side: 1 10.10.10.6 2 10.10.10.6 3 [email protected] for As you can see the printf(3) and the printf(ip,file,ip) fail. I don't know how and where but someone overwrite my hacker_ip string. Thanks for your help! :)

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• How do I get through proxy server environments for non-standard services?

  - by Ripred

  I'm not real hip on exactly what role(s) today's proxy servers can play and I'm learning so go easy on me :-) I have a client/server system I have written using a homegrown protocol and need to enhance the client side to negotiate its way out of a proxy environment. I have an existing client and server system written in C and C++ for the speed and a small amount of MFC in the client to handle the user interface. I have written both the server and client side of the system on Windows (the people I work for are mainly web developers using Windows everything - not a choice) sticking to Berkeley Sockets as it were via wsock32 for efficiency. The clients connect to the server through a nonstandard port (even though using port 80 is an option to get out of some environments but the protocol that goes over it isn't HTTP). The TCP connection(s) stay open for the duration of the clients participation in real time conferences. Our customer base is expanding to all kinds of networked environments. I have been able to solve a lot of problems by adding the ability to connect securely over port 443 and using secure sockets which allows the protocol to pass through a lot environments since the internal packets can't be sniffed. But more and more of our customers are behind a proxy server environment and my direct connections don't make it through. My old school understanding of proxy servers is that they act as a proxy for external HTML content over HTTP, possibly locally caching popular material for faster local access, and also allowing their IT staff to blacklist certain destination sites. Customer are complaining that my software doesn't recognize and easily navigate its way through their proxy environments but I'm finding it difficult to decide what my "best fit" solution should be. My software doesn't tear down the connection after each client request, and on top of that packets can come from either side at any time, basically your typical custom client/server system for a specific niche. My first reaction is "why can't they just add my servers addresses to their white list" but if there is a programmatic way I can get through without requiring their IT staff to help it is politically better and arguably a better solution anyway. Plus maybe I'm still not understanding the role and purpose of what proxy servers and environments have grown to be these days. My first attempt at a solution was to use WinInet with its various proxy capabilities to establish a connection over port 80 to my non-standard protocol server (which knows enough to recognize and answer a simple HTTP-looking GET request and answer it with a simple HTTP response page to get around some environments that employ initial packet sniffing (DPI)). I retrieved the actual SOCKET handle behind WinInet's HINTERNET request object and had hoped to use that in place of my software's existing SOCKET connection and hopefully not need to change much more on the client side. It initially seemed to be my solution but on further inspection it seems that the OS gets first-chance at the received data on this socket since when I get notified of events via the standard select(...) statement on the socket and query the size of the data available via ioctlsocket the call succeeds but returns 0 bytes available, the reads don't work and it goes downhill from there. Can someone tell me of a client-side library (commercial is fine) will let me get past these proxy server environments with as little user and IT staff help as possible? From what I read it has grown past SOCKS and I figure someone has to have solved this problem before me. Thanks for reading my long-winded question, Ripred

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• Flash Media Server Streaming: Content Protection

  - by dbemerlin

  Hi, i have to implement flash streaming for the relaunch of our video-on-demand system but either because i haven't worked with flash-related systems before or because i'm too stupid i cannot get the system to work as it has to. We need: Per file & user access control with checks on a WebService every minute if the lease time ran out mid-stream: cancelling the stream rtmp streaming dynamic bandwidth checking Video Playback with Flowplayer (existing license) I've got the streaming and bandwidth check working, i just can't seem to get the access control working. I have no idea how i know which file is played back or how i can play back a file depending on a key the user has entered. Server-Side Code (main.asc): application.onAppStart = function() { trace("Starting application"); this.payload = new Array(); for (var i=0; i < 1200; i++) { this.payload[i] = Math.random(); //16K approx } } application.onConnect = function( p_client, p_autoSenseBW ) { p_client.writeAccess = ""; trace("client at : " + p_client.uri); trace("client from : " + p_client.referrer); trace("client page: " + p_client.pageUrl); // try to get something from the query string: works var i = 0; for (i = 0; i < p_client.uri.length; ++i) { if (p_client.uri[i] == '?') { ++i; break; } } var loadVars = new LoadVars(); loadVars.decode(p_client.uri.substr(i)); trace(loadVars.toString()); trace(loadVars['foo']); // And accept the connection this.acceptConnection(p_client); trace("accepted!"); //this.rejectConnection(p_client); // A connection from Flash 8 & 9 FLV Playback component based client // requires the following code. if (p_autoSenseBW) { p_client.checkBandwidth(); } else { p_client.call("onBWDone"); } trace("Done connecting"); } application.onDisconnect = function(client) { trace("client disconnecting!"); } Client.prototype.getStreamLength = function(p_streamName) { trace("getStreamLength:" + p_streamName); return Stream.length(p_streamName); } Client.prototype.checkBandwidth = function() { application.calculateClientBw(this); } application.calculateClientBw = function(p_client) { /* lots of lines copied from an adobe sample, appear to work */ } Client-Side Code: <head> <script type="text/javascript" src="flowplayer-3.1.4.min.js"></script> </head> <body> <a class="rtmp" href="rtmp://xx.xx.xx.xx/vod_project/test_flv.flv" style="display: block; width: 520px; height: 330px" id="player"> </a> <script> $f( "player", "flowplayer-3.1.5.swf", { clip: { provider: 'rtmp', autoPlay: false, url: 'test_flv' }, plugins: { rtmp: { url: 'flowplayer.rtmp-3.1.3.swf', netConnectionUrl: 'rtmp://xx.xx.xx.xx/vod_project?foo=bar' } } } ); </script> </body> My first Idea was to get a key from the Query String, ask the web service about which file and user that key is for and play the file but i can't seem to find out how to play a file from server side. My second idea was to let flowplayer play a file, pass the key as query string and if the filename and key don't match then reject the connection but i can't seem to find out which file it's currently playing. The only remaining idea i have is: create a list of all files the user is allowed to open and set allowReadAccess or however it was called to allow those files, but that would be clumsy due to the current infrastructure. Any hints? Thanks.

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