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  • Ruby rail debug output

    - by Darkerstar
    Hi all: I am just starting to write ruby rails. I wrote a controller but is getting wrong number of "arguments (1 for 0)" error, I can't understand why. It has no information on where the error occurred? It has a full list of stack traces but my controller file is not in there! In my controller I have just two methods, that I was going to test out activemq. But after I put the controller out, I got the above error, so I commented out all the code, but I still get the same error. I can't figure out why. I searched google for ruby debug, I have not found anything helpful. Here is my controller source: class ActivemqTestController < ApplicationController def send #client = Stomp::Client.open("stomp://localhost:61613") #station_id=101 #data = {'station_id' => station_id, 'username' => 'yangyanzhe'} #client.publish('/listener/add', data) end def receive #client = Stomp::Client.open("stomp://localhost:61613") # Processing loop #client.subscribe('/listener/add', headers) do |msg| # Process your message here # Your submitted data is in msg.body #puts msg['username'] + " joined " + msg['station_id'] + "\n" #client.acknowledge(msg) #end #client.join # Wait until listening thread dies end end This is the error: ArgumentError in Activemq testController#index wrong number of arguments (1 for 0) RAILS_ROOT: D:/rubyapps/radio Application Trace | Framework Trace | Full Trace f:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/base.rb:532:in `send' f:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/base.rb:532:in `process_without_filters' f:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/filters.rb:606:in `process' f:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/base.rb:391:in `process' f:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/base.rb:386:in `call' f:/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/routing/route_set.rb:437:in `call' Thank you for any help in advance.

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  • JVM CMS Garbage Collecting Issues

    - by jlintz
    I'm seeing the following symptoms on an application's GC log file with the Concurrent Mark-Sweep collector: 4031.248: [CMS-concurrent-preclean-start] 4031.250: [CMS-concurrent-preclean: 0.002/0.002 secs] [Times: user=0.00 sys=0.00, real=0.00 secs] 4031.250: [CMS-concurrent-abortable-preclean-start] CMS: abort preclean due to time 4036.346: [CMS-concurrent-abortable-preclean: 0.159/5.096 secs] [Times: user=0.00 sys=0.01, real=5.09 secs] 4036.346: [GC[YG occupancy: 55964 K (118016 K)]4036.347: [Rescan (parallel) , 0.0641200 secs]4036.411: [weak refs processing, 0.0001300 secs]4036.411: [class unloading, 0.0041590 secs]4036.415: [scrub symbol & string tables, 0.0053220 secs] [1 CMS-remark: 16015K(393216K)] 71979K(511232K), 0.0746640 secs] [Times: user=0.08 sys=0.00, real=0.08 secs] The preclean process keeps aborting continously. I've tried adjusting CMSMaxAbortablePrecleanTime to 15 seconds, from the default of 5, but that has not helped. The current JVM options are as follows... Djava.awt.headless=true -Xms512m -Xmx512m -Xmn128m -XX:MaxPermSize=128m -XX:+HeapDumpOnOutOfMemoryError -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:BiasedLockingStartupDelay=0 -XX:+DoEscapeAnalysis -XX:+UseBiasedLocking -XX:+EliminateLocks -XX:+CMSParallelRemarkEnabled -verbose:gc -XX:+PrintGCTimeStamps -XX:+PrintGCDetails -XX:+PrintHeapAtGC -Xloggc:gc.log -XX:+CMSClassUnloadingEnabled -XX:+CMSPermGenPrecleaningEnabled -XX:CMSInitiatingOccupancyFraction=50 -XX:ReservedCodeCacheSize=64m -Dnetworkaddress.cache.ttl=30 -Xss128k It appears the concurrent-abortable-preclean never gets a chance to run. I read through http://blogs.sun.com/jonthecollector/entry/did_you_know which had a suggestion of enabling CMSScavengeBeforeRemark, but the side effects of pausing did not seem ideal. Could anyone offer up any suggestions? Also I was wondering if anyone had a good reference for grokking the CMS GC logs, in particular this line: [1 CMS-remark: 16015K(393216K)] 71979K(511232K), 0.0746640 secs] Not clear on what memory regions those numbers are referring to.

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  • Load Balance WCF and Share a Remote MSMQ for High Throughput

    - by BarDev
    After a ton of reading in books and on the web, I have noticed hints of information that WCF and MSMQ can be used in achieving high throughput. The information I have seen mentions using multiple WCF services in a farm that reads from a single MSMQ queue. The problem is that I have found paragraphs here and there that mentions that high throughput can be done, but I cannot seem to find a document of how to implement it. The following is an excerpt from a MSDN article. The following paragraph is from Best Practices for Queued Communication http://msdn.microsoft.com/en-us/library/ms731093.aspx To achieve higher throughput and availability, use a farm of WCF services that read from the queue. This requires that all of these services expose the same contract on the same endpoint. The farm approach works best for applications that have high production rates of messages because it enables a number of services to all read from the same queue. This is what I'm trying to solve. I have an intranet application where a client sends a request to a WCF service. But I want the ability to load balance the WCF services on multiple servers in a farm. I also want these WCF services in the farm to do transactional reads from a remote MSMQ when an item is available in the Queue. If this is possible, an issue I have is that I do not understand the activation process of WCF to retrieve messages from a remote queue. If this is possible, does anyone know of any articles or Webcasts that would explain it in detail? BarDev

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  • Komodo Edit 5.2 Django Template Syntax Error - Info: <head> previously mentioned

    - by Lance McNearney
    I am using Komodo Edit 5.2 for editing html and Django template files. It always shows a single syntax error inside the first {% block %} area on the first tag of my template. For example: {% extends "base.html" %} {% load i18n %} {% block title %}Hello{% endblock %} {% block content %} <p>Hello</p> <-- Syntax error on this single line <p>Other lines have no errors</p> {% endblock %} {% block footer %} <p>No errors here</p> {% endblock %} The syntax error given is: Info: <head> previously mentioned I know for a fact that the error has nothing to do with my <head> tag since it occurs in the base template and in child templates (and the IDE isn't smart enough to process the base templates when in a child, etc.) All of my html tags are closed properly and everything validates for XHTML strict. This forum post mentions a similar problem but offers no solution (and may be specific to Smarty syntax highlighting). Any ideas on how to resolve this error (or disable it from being shown)?

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  • Cloning git repository from svn repository, results in file-less, remote-branch-less git repo.

    - by Tchalvak
    Working SVN repo I'm starting a git repo to interact with a svn repo. The svn repository is set and working fine, with a single commit of a basic README file in it. Checking it out works fine: tchalvak:~/test/svn-test$ svn checkout --username=myUsernameHere http://www.url.to/project/here/charityweb/ A charityweb/README Checked out revision 1. Failed git-svn clone of svn repo When I try to clone the repository in git, the first step shows no errors... tchalvak:~/test$ git svn clone -s --username=myUserNameHere http://www.url.to/project/here/charityweb/ Initialized empty Git repository in /home/tchalvak/test/charityweb/.git/ Authentication realm: <http://www.url.to/project/here:80> Charity Web Password for 'myUserNameHere': ...but results in a useless folder: tchalvak:~/test$ ls charityweb tchalvak:~/test$ cd charityweb/ tchalvak:~/test/charityweb$ ls tchalvak:~/test/charityweb$ ls -al total 12 drwxr-xr-x 3 tchalvak tchalvak 4096 2010-04-02 13:46 . drwxr-xr-x 4 tchalvak tchalvak 4096 2010-04-02 13:46 .. drwxr-xr-x 8 tchalvak tchalvak 4096 2010-04-02 13:47 .git tchalvak:~/test/charityweb$ git branch -av tchalvak:~/test/charityweb$ git status # On branch master # # Initial commit # nothing to commit (create/copy files and use "git add" to track) tchalvak:~/test/charityweb$ git fetch fatal: Where do you want to fetch from today? tchalvak:~/test/charityweb$ git rebase origin/master fatal: bad revision 'HEAD' fatal: Needed a single revision invalid upstream origin/master tchalvak:~/test/charityweb$ git log fatal: bad default revision 'HEAD' How do I get something I can commit back to? I expect I'm doing something wrong in this process, but what?

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  • Replication: SQL Server 2008 Publisher with SQL Server Express 2005 Subscriber

    - by Jeremy
    Here is the setup: SQL Server 2008 Enterprise Server with a Merge Publication. SQL Server 2005 Express with pull subscription. There is no web or ftp setup. This is direct merge replication. Using the RMO objects from C#, I get a "class cannot be found." COM Error when accessing the MergePullSubscription.SynchronizationAgent property. I've tried with both the 2008 RMO dll's (version 10 dll's) and the 2005 RMO dll's (version 9 dll's). When trying to use replmerge.exe, I get the following: 2010-04-10 04:12:05.263 Microsoft SQL Server Merge Agent 9.00.1399.06 2010-04-10 04:12:05.294 Copyright (c) 2000 Microsoft Corporation 2010-04-10 04:12:05.294 2010-04-10 04:12:05.294 The timestamps prepended to the output lines are express ed in terms of UTC time. 2010-04-10 04:12:05.294 User-specified agent parameter values: -Publisher SUN -PublisherDB PRIMROSE -PublisherSecurityMode 1 -Publication PRIMROSE -Distributor SUN -DistributorSecurityMode 1 -Subscriber PVILLE\SQLEXPRESS -SubscriberSecurityMode 1 -SubscriberDB PRIMROSE -SubscriptionType 1 -DistributorLogin sa -DistributorPassword ********** -DistributorSecurityMode 0 -PublisherLogin sa -PublisherPassword ********** -PublisherSecurityMode 0 -SubscriberLogin sa -SubscriberPassword ********** -SubscriberSecurityMode 0 2010-04-10 04:12:05.325 Connecting to Subscriber 'PVILLE\SQLEXPRESS' 2010-04-10 04:12:05.481 Connecting to Distributor 'SUN' 2010-04-10 04:12:05.513 The version of SQL Server running at the Distributor(10. 0.2531.??????????????????) is not compatible with the version of SQL Server runn ing at the Subscriber(9.00.1399.???????L?L?LHL?L?L?L?,?). 2010-04-10 04:12:05.513 Category:NULL Source: Merge Process Number: -2147200979 Message: The version of SQL Server running at the Distributor(10.0.2531.???????? ??????????) is not compatible with the version of SQL Server running at the Subs criber(9.00.1399.???????L?L?LHL?L?L?L?,?). Any ideas?

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  • BCP task hangs while executing

    - by user350374
    Hey guys, We have a HPC node that runs some of our tasks in it. I have a task in my .net project that kicks the bcp utility on the HPC node and the output of the query that I have runs into 9 Mb. When the HPC node runs this task the output of the query is dumped into a file and then after it dumps around 5mb of data it suddenly stops dumping any more data and this happens all the time. (Please note this isnt any data issue as its not crashing on a particular row every time). this may or may not be of significance but I dump the data into a different server which has adequate permissions set. I have run the command with the same query directly on the hpc node and on other comps and it gives the right output. I'm running the bcp command as follows: var processInfo = new ProcessStartInfo("bcp.exe", argument) { RedirectStandardOutput = true, RedirectStandardError = true, CreateNoWindow = true, UseShellExecute = false }; var proc = new Process { StartInfo = processInfo, EnableRaisingEvents = true }; proc.Exited += new EventHandler(bcp_log); proc.Start(); proc.WaitForExit(); So my code actually waits for each bcp task to run before it goes ahead as I call it multiple times. FYI to remind you again it only fails when my o/p exceeds a certain no of bytes in this case approx 5mb. Any help is much appreciated.

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  • rails with fcgi error

    - by qichunren
    LoadError (Expected /web/zhao_backend2/app/controllers/admin_controller.rb to define AdminController): /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:249:in load_missing_constant' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:453:inconst_missing' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:465:in const_missing' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/inflector.rb:257:inconstantize' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/core_ext/string/inflections.rb:148:in constantize' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/routing.rb:1426:inrecognize' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:170:in handle_request' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:115:indispatch' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:126:in dispatch_cgi' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:9:indispatch' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/fcgi_handler.rb:101:in process_request' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/fcgi_handler.rb:149:inwith_signal_handler' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/fcgi_handler.rb:99:in process_request' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/fcgi_handler.rb:77:inprocess_each_request' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/fcgi-0.8.8/lib/fcgi.rb:612:in each_cgi' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/fcgi-0.8.8/lib/fcgi.rb:609:ineach' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/fcgi-0.8.8/lib/fcgi.rb:609:in each_cgi' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/fcgi_handler.rb:76:inprocess_each_request' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/fcgi_handler.rb:50:in process!' /usr/local/ruby-1.8.7-p248/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/fcgi_handler.rb:24:inprocess!' /public/dispatch.fcgi:24 Rendering /web/zhao_backend2/public/500.html (500 Internal Server Error)

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  • Do I really need an ORM?

    - by alchemical
    We're about to begin development on a mid-size ASP.Net MVC 2 web site. For a typical page, we grab data and throw it up on the web page, i.e. there is not much pre-processing of the data before it is sent to the UI. We're now making the decision whether or not to use an ORM and if yes, which one. We had been looking at EF2 AKA EF4 (ASP.Net Entity Framework in VS 2010) as one possibility. However, I'm thinking a simple solution in this case may be just to use datatables. The reason being that we don't plan to move the data around or process it a lot once we fetch it, so I'm not sure there is that much value in having strongly-typed objects as DTOs. Also, this way we avoid mapping altogether, thereby I think simplifying the code and allowing for faster development. I should mention budget is an issue on this project, as well as speed of execution. We are striving for simplicity anywhere we can, both to keep the budget smaller, the schedule shorter, and performance fast. We haven't fully decided this yet, but are currently leaning towards no ORM. Will we be OK with the no ORM approach or is an ORM worth it?

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  • Java Generics: Dealing with an intermediate unknown type

    - by Matt
    I am trying to figure out a way to deal with a particular problem in a type safe manner, or to put it more specifically without any explicit casts. I have a class that takes in a generic request and returns a generic response like such: public class RetrievalProcessor<Req extends Request, Resp> implements RequestProcessor<Req, Resp>{ private Dao<Req> dao; private RawResponseTransformer<Resp> transformer; @Override public Resp process(Req request) { return transformer.transformResponse(dao.retrieveRawResponse(request)); } } My problem is the following. My Dao object can be many different things REST, JDBC, some other proprietary object. I can't be certain of the type of object that the Dao will return. I do know the type of object my caller would like and that is the Resp type on the generic, and the job of the RawResponseTransformer is to transform that Dao response into something that the caller can consume. The problem I have is I can't figure out a way that feels clean to do that. I have considered putting the intermediate type as part of the definition of the class, but it doesn't seem like the caller should know, or really care, what the intermediate form is. Hoping someone might have a good clean idea for handling this.

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  • How do I get google protocol buffer messages over a socket connection without disconnecting the clie

    - by Dan
    Hi there, I'm attempting to send a .proto message from an iPhone application to a Java server via a socket connection. However so far I'm running into an issue when it comes to the server receiving the data; it only seems to process it after the client connection has been terminated. This points to me that the data is getting sent, but the server is keeping its inputstream open and waiting for more data. Would anyone know how I might go about solving this? The current code (or at least the relevant parts) is as follows: iPhone: Person *person = [[[[Person builder] setId:1] setName:@"Bob"] build]; RequestWrapper *request = [[[RequestWrapper builder] setPerson:person] build]; NSData *data = [request data]; AsyncSocket *socket = [[AsyncSocket alloc] initWithDelegate:self]; if (![socket connectToHost:@"192.168.0.6" onPort:6666 error:nil]){ [self updateLabel:@"Problem connecting to socket!"]; } else { [self updateLabel:@"Sending data to server..."]; [socket writeData:data withTimeout:-1 tag:0]; [self updateLabel:@"Data sent, disconnecting"]; //[socket disconnect]; } Java: try { RequestWrapper wrapper = RequestWrapper.parseFrom(socket.getInputStream()); Person person = wrapper.getPerson(); if (person != null) { System.out.println("Persons name is " + person.getName()); socket.close(); } On running this, it seems to hang on the line where the RequestWrapper is processing the inputStream. I did try replacing the socket writedata method with [request writeToOutputStream:[socket getCFWriteStream]]; Which I thought might work, however I get an error claiming that the "Protocol message contained an invalid tag (zero)". I'm fairly certain that it doesn't contain an invalid tag as the message works when sending it via the writedata method. Any help on the matter would be greatly appreciated! Cheers! Dan (EDIT: I should mention, I am using the metasyntactic gpb code; and the cocoaasyncsocket implementation)

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  • Classic ASP Session not working in IIS 7 Windows Server 2008 R2 x64

    - by user553361
    Hi, I've been googleing and searching here info about this but so far couldn't find anything relevant to my problem. We have a website currently working on II6 and Windows Server 2003 (x86) without any problem. Now we want to migrate our server to a Virtual Machine with Windows Server 2008 R2 (x64) and IIS7. Out current app is built in Classic ASP and SQL Server (This one located on a 2nd Server but this is staying the way it is now). The website is configured as a WebSite, not a virtual directory. Using DefaultAppPool with 4 applications. Now, the problem I'm getting is with the Sessions, or at least that's what I think since I created a simple hello.asp with this code <% response.write "Hello" response.write Session.SessionID %> And this is giving us this result: Hello error '8002801d' /hello.asp, line 3 ASP Sessions Properties Enable Session State : True Maximum Sessions : 2147483647 New ID On Secure Connection : True Time-out : 20 min This is the log in Event Viewer Warning 24/12/2010 14:03:42 Active Server Pages 9 None FailedReqLog Url http://apps.shocklogic.com:80/hello.asp App Pool DefaultAppPool Authentication anonymous User from token NT AUTHORITY\IUSR Activity ID {00000000-0000-0000-1400-0080000000F8} Site 1 Process 3312 Failure Reason STATUS_CODE Trigger Status 500 Final Status 500 Time Taken 110 msec Would be great if anyone has any ideas. Thanks, Federico

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  • Unsupported operand types when value is integer

    - by Adam Tester
    I'm getting this error when trying to add 2 to an integer. I am using the Codeigniter framework. Fatal error: Unsupported operand types in D:\wamp\www\application\libraries\Gen_images.php on line 180 Here is where its called: // Now process the image var_dump($this->upload->data('image_width')); $this->gen_login->resize($file_name, $this->upload->data('image_width'), $this->upload->data('image_height')); I get the error on line 180 which is: $config['width'] = $width + 2; So I thought $width must be an array or string so I wouldn't be able to add to it, but the var dump shows this: array 'file_name' => string 'genyx_1341414096.jpg' (length=20) 'file_type' => string 'image/jpeg' (length=10) 'file_path' => string 'D:/wamp/www/beer/uploads/' (length=25) 'full_path' => string 'D:/wamp/www/beer/uploads/genyx_1341414096.jpg' (length=45) 'raw_name' => string 'genyx_1341414096' (length=16) 'orig_name' => string 'genyx_1341414096.jpg' (length=20) 'client_name' => string '294207_177080222375077_100002193022560_361510_991268937_s.jpg' (length=61) 'file_ext' => string '.jpg' (length=4) 'file_size' => float 55.85 'is_image' => boolean true 'image_width' => int 720 'image_height' => int 479 'image_type' => string 'jpeg' (length=4) 'image_size_str' => string 'width="720" height="479"' (length=24) Can anyone help me?

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  • Help with SQL server stack dump

    - by edosoft
    Hi guru's We're running SQL 2005 standard SP2 on a 4cpu box. Suddenly it crashdumps, after which all pooled connections are invalid and it goes into admin-only mode (only sa can connect) The short stackdump is below. After the dump a number of errors show up like '2008-09-16 10:49:34.48 Server Resource Monitor (0xec4) Worker 0x03D1C0E8 appears to be non-yielding on Node 0. Memory freed: 232408 KB. Approx CPU Used: kernel 203 ms, user 140 ms, Interval: 250250.' Have Googled around but couldn't find a definate answer. Anyone? 2008-09-16 10:46:24.98 Server Using 'dbghelp.dll' version '4.0.5' 2008-09-16 10:46:25.40 Server **Dump thread - spid = 0, PSS = 0x00000000, EC = 0x00000000 2008-09-16 10:46:25.40 Server ***Stack Dump being sent to C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\LOG\SQLDump0009.txt 2008-09-16 10:46:25.40 Server * ******************************************************************************* 2008-09-16 10:46:25.40 Server * 2008-09-16 10:46:25.40 Server * BEGIN STACK DUMP: 2008-09-16 10:46:25.40 Server * 09/16/08 10:46:25 spid 0 2008-09-16 10:46:25.42 Server * 2008-09-16 10:46:25.42 Server * Non-yielding Resource Monitor 2008-09-16 10:46:25.42 Server * 2008-09-16 10:46:25.42 Server * ******************************************************************************* 2008-09-16 10:46:25.42 Server * ------------------------------------------------------------------------------- 2008-09-16 10:46:25.42 Server * Short Stack Dump 2008-09-16 10:46:25.76 Server Stack Signature for the dump is 0x00000352 2008-09-16 10:46:32.70 Server External dump process return code 0x20000001.

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  • BN_hex2bn magicaly segfaults in openSSL

    - by xunil154
    Greetings, this is my first post on stackoverflow, and i'm sorry if its a bit long. I'm trying to build a handshake protocol for my own project and am having issues with the server converting the clients RSA's public key to a Bignum. It works in my clent code, but the server segfaults when attempting to convert the hex value of the clients public RSA to a bignum. I have already checked that there is no garbidge before or after the RSA data, and have looked online, but i'm stuck. header segment: typedef struct KEYS { RSA *serv; char* serv_pub; int pub_size; RSA *clnt; } KEYS; KEYS keys; Initializing function: // Generates and validates the servers key /* code for generating server RSA left out, it's working */ //Set client exponent keys.clnt = 0; keys.clnt = RSA_new(); BN_dec2bn(&keys.clnt->e, RSA_E_S); // RSA_E_S contains the public exponent Problem code (in Network::server_handshake): // *Recieved an encrypted message from the network and decrypt into 'buffer' (1024 byte long)* cout << "Assigning clients RSA" << endl; // I have verified that 'buffer' contains the proper key if (BN_hex2bn(&keys.clnt->n, buffer) < 0) { Error("ERROR reading server RSA"); } cout << "clients RSA has been assigned" << endl; The program segfaults at BN_hex2bn(&keys.clnt->n, buffer) with the error (valgrind output) Invalid read of size 8 at 0x50DBF9F: BN_hex2bn (in /usr/lib/libcrypto.so.0.9.8) by 0x40F23E: Network::server_handshake() (Network.cpp:177) by 0x40EF42: Network::startNet() (Network.cpp:126) by 0x403C38: main (server.cpp:51) Address 0x20 is not stack'd, malloc'd or (recently) free'd Process terminating with default action of signal 11 (SIGSEGV) Access not within mapped region at address 0x20 at 0x50DBF9F: BN_hex2bn (in /usr/lib/libcrypto.so.0.9.8) And I don't know why it is, Im using the exact same code in the client program, and it works just fine. Any input is greatly appriciated!

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  • ASP.Net: Writing chunks of file..HTTP File upload with resume..

    - by Manish
    Please refer to question: http://stackoverflow.com/questions/2062852/resume-in-upload-file-control Now to find a solution for the above question, I want to work on it and develop a user control which can resume a HTTP File Upload process. For this, I'm going to create a temporary file on server until the upload is complete. Once the uploading is done completely then will just save it to the desired location. The procedure I have thought of is: Create a temporary file with a unique name (may be GUID) on the server. Read a chunk of file and append it to this temp file on the server. Continue step 1 to 3 until EOF is reached. Now if the connection is lost or user clicks on pause button, the writing of file is stopped and the temporary file is not deleted. Clicking on resume again or uploading the same file again will check on the server if the file exists and user whether to resume or to overwrite. (Not sure how to check if it's the same file. Also, how to step sending the chunks from client to server.) Clicking on resume will start from where it is required to be uploaded and will append that to the file on the server. (Again not sure how to do this.) Questions: Are these steps correct to achieve the goal? Or need some modifications? I'm not sure how to implement all these steps. :-( Need ideas, links... Any help appreciated...

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  • Making an AJAX WCF Web Service request during an Async Postback

    - by nekno
    I want to provide status updates during a long-running task on an ASP.NET WebForms page with AJAX. Is there a way to get the ScriptManager to execute and process a script for a web service request during an async postback? I have a script on the page that makes a web service request. It runs on page load and periodically using setInterval(). It's running correctly before the async postback is initiated, but it stops running during the async postback, and doesn't run again until after the async postback completes. I have an UpdatePanel with a button to trigger an async postback, which executes the long-running task. I also have an instance of an AJAX WCF Web service that is working correctly to fetch data and present it on the page but, like I said, it doesn't fetch and present the data until after the async postback completes. During the async postback, the long-running task sends updates from the page to the web service. The problem is that I can debug and step through the web service and see that the status updates are correctly set, but the updates aren't retrieved by the client script until the async postback completes. It seems the Script Manager is busy executing the async postback, so it doesn't run my other JavaScript via setInterval() until the postback completes. Is there a way to get the Script Manager, or otherwise, to run the script to fetch data from the WCF web service during the async postback? I've tried various methods of using the PageRequestManager to run the script on the client-side BeginRequest event for the async postback, but it runs the script, then stops processing the code that should be running via setInterval() while the page request executes.

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  • Force x86 CLR on 'Any CPU' .NET assembly

    - by jeffora
    In .NET, the 'Platform Target: Any CPU' compiler option allows a .NET assembly to run as 64bit on a x64 machine, and 32bit on an x86 machine. It is also possible to force an assembly to run as x86 on an x64 machine using the 'Platform Target: x86' compiler option. Is it possible to run an assembly with the 'Any CPU' flag, but determine whether it should be run in the x86 or x64 CLR? Normally this decision is made by the CLR/OS Loader (as is my understanding) based on the bitness of the underlying system. I am trying to write a C# .NET application that can interact with (read: inject code into) other running processes. x64 processes can only inject into other x64 processes, and the same with x86. Ideally, I would like to take advantage of JIT compilation and the Any CPU option to allow a single application to be used to inject into either x64 or x86 processes (on an x64 machine). The idea is that the application would be compiled as Any CPU. On an x64 machine it would run as x64. If the target process is x86, it should relaunch itself, forcing the CLR to run it as x86. Is this possible?

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  • Large number of simultaneous long-running operations in Qt

    - by Hostile Fork
    I have some long-running operations that number in the hundreds. At the moment they are each on their own thread. My main goal in using threads is not to speed these operations up. The more important thing in this case is that they appear to run simultaneously. I'm aware of cooperative multitasking and fibers. However, I'm trying to avoid anything that would require touching the code in the operations, e.g. peppering them with things like yieldToScheduler(). I also don't want to prescribe that these routines be stylized to be coded to emit queues of bite-sized task items...I want to treat them as black boxes. For the moment I can live with these downsides: Maximum # of threads tend to be O(1000) Cost per thread is O(1MB) To address the bad cache performance due to context-switches, I did have the idea of a timer which would juggle the priorities such that only idealThreadCount() threads were ever at Normal priority, with all the rest set to Idle. This would let me widen the timeslices, which would mean fewer context switches and still be okay for my purposes. Question #1: Is that a good idea at all? One certain downside is it won't work on Linux (docs say no QThread::setPriority() there). Question #2: Any other ideas or approaches? Is QtConcurrent thinking about this scenario? (Some related reading: how-many-threads-does-it-take-to-make-them-a-bad-choice, many-threads-or-as-few-threads-as-possible, maximum-number-of-threads-per-process-in-linux)

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  • User (MS-Office) generated content - how?

    - by Avi
    How can I allow users to share Microsoft Office generated content on an ASP.Net site? For example usage, imagine a site similar to StackOverflow. George, writing a question, uses Word, Excel or OneNote to create content, and then inserts the content into the question area (probably copying it into the clipboard and then using some "paste from office" widget). Harry, who doesn't have MS-Office on his computer, can still see in his browser the content George has generate. If Harry wants to add content, he can use the built in editor, same like in Stackoverflow, and have to be satisfied with lesser functionality. Sue, who has MS-Office installed, can of course see the content in the browser just like Harry. In addition, she can "export" this content and process it in the application George used to generate it. So, how do I do it? Would Save/Export to HTML feature work? Any tools? Samples? Articles? Office 2007 or later is OK.

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  • finding "line-breaks" in textarea that is word-wrapping ARABIC text

    - by Irfan jamal
    I have a string of text that I display in a textarea (right-to-left orientation). The user can resize the textarea dynamically (I use jquery for this) and the text will wrap as necessary. When the user hits submit, I will take that text and create an image using PHP, BUT before submitting I would like to know where the "line-breaks" or rather "word-wraps" occur. Everywhere I have looked so far only shows me how to process line-breaks on the php side. I want to make it clear that there ARE NO LINE-BREAKS. What I have is one LONG string that will be word-wrapped in different ways based on the width of the textarea set by the user. I can't use "columns" or any other standard width representation because I have a very complex arabic font that is actually composed of glyphs (characters) of numerous different widths. If anyone knows of a way of accessing where the word wraps occur (either in a textarea or a div if need-be), I'd really like to know. My only other solution is to actually store (in my DB) the width of every single character (somewhat tedious since there are over 200 characters in 600 different fonts, for a total of...some huge number). My hopes aren't high, but I thought I would ask. Thanks i. jamal

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  • Odd difference between Python 2.5 and Python 2.6 on MacOS 10.6 using ctypes and libproc proc_pidinfo

    - by cemasoniv
    I'm trying to determine the current working directory of a process given its PID. The command-line utility lsof does something similar. Here's the source to the python script: import ctypes from ctypes import util import sys PROC_PIDVNODEPATHINFO = 9 proc = ctypes.cdll.LoadLibrary(util.find_library("libproc")) print(proc.proc_pidinfo) class vnode_info(ctypes.Structure): _fields_ = [('data', ctypes.c_ubyte * 152)] class vnode_info_path(ctypes.Structure): _fields_ = [('vip_vi', vnode_info), ('vip_path', ctypes.c_char * 1024)] class proc_vnodepathinfo(ctypes.Structure): _fields_ = [('pvi_cdir', vnode_info_path), ('pvi_rdir', vnode_info_path)] inst = proc_vnodepathinfo() pid = int(sys.argv[1]) ret = proc.proc_pidinfo( pid, PROC_PIDVNODEPATHINFO, 0, ctypes.byref(inst), ctypes.sizeof(inst) ) print(ret, inst.pvi_cdir.vip_path) However, even though this script behaves as expected on Python 2.6, it does not work in Python 2.5: host:dir user$ sudo /usr/bin/python2.6 script.py 2698 <_FuncPtr object at 0x100419ae0> (2352, '/') host:dir user$ sudo /usr/bin/python2.5 script.py 2698 <_FuncPtr object at 0x19fdc0> (0, '') (PID 2698 is "Activity Monitor.app"). Note the different return values. Since this program strongly based on ctypes, I can't imagine any difference in Python itself that would cause this. The same behavior (as Python 2.5) occurs with my self-built Python 3.2. I'm not sure what versioning information I can give to help track down the weirdness -- or even come up with a solution for 2.5 -- but here's some stuff: host:dir user$ otool -L /usr/bin/python2.6 /usr/bin/python2.6: /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.2.0) host:dir user$ otool -L /usr/bin/python2.5 /usr/bin/python2.5 (architecture i386): /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.2.0) /usr/bin/python2.5 (architecture ppc7400): /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.2.0) host:dir user$ uname -a Darwin host.local 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun 7 16:33:36 PDT 2011; root:xnu-1504.15.3~1/RELEASE_I386 i386 Thanks to anyone that has a clue about what's going on here:)

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  • Base 128 or 256 Encoding for the Binary Lexical Octet Adhoc Transport Protocol?

    - by Randolpho
    I'm in the process of implementing a network driver for the Binary Lexical Octet Adhoc Transport (BLOAT) protocols in the hopes of replacing the TCP/UDP/IP stack with a much more flexible XML structure. BLOAT is detailed in RFC 3252, so if you're unfamiliar with the protocol I highly recommend you read the entire RFC before providing any comments. Don't worry, it's short and sweet; you might even enjoy it. Anyway, my problem is this: BLOAT requires that the payload be Base64 encoded which doesn't make sense to me. I mean, sure, it's the internet standard for binary payloads, but there are better, more efficient encodings available: Base128 and Base256, for example. That the RFC requires Base64 and doesn't allow for any other payload encoding really bothers me. To that end, I'm considering a small optional change to the protocol. Embrace and extend, right? Anyway, I'd like to modify the payload element to accept an encoding attribute, which can extend the encoding to Base128 or Base256, or even to other encodings I can't conceive of at the moment. If the encoding attribute isn't present, Base64 would be assumed. So my question is this: should I? I mean, BLOAT is an accepted standard, even if it isn't exactly omnipresent. If I make this change, will there be compatibility issues? I don't foresee any, but perhaps you, oh great Stack Overflow Community, can? If I do implement this change, should I contact the original RFC author? Should I offer a supplemental RFC?

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  • Give WPF design mode default objects

    - by Janko R
    In my application I have <Rectangle.Margin> <MultiBinding Converter="{StaticResource XYPosToThicknessConverter}"> <Binding Path="XPos"/> <Binding Path="YPos"/> </MultiBinding> </Rectangle.Margin> The Data Context is set during runtime. The application works, but the design window in VS does not show a preview but System.InvalidCastException. That’s why I added a default object in the XYPosToThicknessConverter which is ugly. class XYPosToThicknessConverter : IMultiValueConverter { public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture) { // stupid check to give the design window its default object. if (!(values[0] is IConvertible)) return new System.Windows.Thickness(3, 3, 0, 0); // useful code and exception throwing starts here // ... } } My Questions: What does VS/the process that builds the design window pass to XYPosToThicknessConverter and what is way to find it out by myself. How do I change my XAML code, so that the design window gets its default object and is this the best way to handle this problem? I’m using VS2010RC with Net4.0

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  • SVN Workflow - Chicken Before the Egg - Before merging V1 with V2, I need code from V1 to work on V2

    - by Jake
    Hi, Our distributed team (3 internal devs and 3+ external devs) use SVN to manage our codebase for a web site. We have a branch for each minor version (4.1.0, 4.1.1, 4.1.2, etc...). We have a trunk which we merge each version into when we do a release and publish to our site. An example of the problem we are having is thus: A new feature is added, lets call it "Ability to Create A Project" to 4.1.1. Another feature which depends on the one in 4.1.1 is scheduled to go in 4.1.2, called "Ability to Add Tasks to Projects". So, on Monday, we say 4.1.1 is 'closed' and needs to be tested. Our remote developers usually will start working on features/tickets for 4.1.2 at this point. Throughout the week we will test 4.1.1 and fix any bugs and commit them back to 4.1.1. Then, on Friday or so, we will tag 4.1.1, merge it with trunk, and finally, merge it with 4.1.2. But, for the 4-5 days we are testing, 4.1.2 doesn't have the code from 4.1.1 that some of the new features for 4.1.2 depend on. So a dev who is adding the "Ability to Add Tasks To Projects" feature, doesn't have the "Ability to Create a Project" feature to build upon, and has to do some file copy shenanigans to be able to keep working on it. What could/should we do to smooth out this process? P.S. Apologies if this question has been asked before - I did search but couldn't find what I'm looking for.

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