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• How to read verbose VC++ linker output

  - by Assaf Lavie

  Trying to debug some linker errors, I turned on /VERBOSE and I'm trying to make sense of the output. It occurs to me that I really don't know how to read it. For example: 1>Compiling version info 1>Linking... 1>Starting pass 1 1>Processed /DEFAULTLIB:mfc80.lib 1>Processed /DEFAULTLIB:mfcs80.lib 1>Processed /DEFAULTLIB:msvcrt.lib 1>Processed /DEFAULTLIB:kernel32.lib 1>Processed /DEFAULTLIB:user32.lib .... 1>Processed /DEFAULTLIB:libgslcblasMD.lib 1>Searching libraries 1> Searching V:\Src\Solutions\\..\..\\Common\Win32\Lib\PlxApi.lib: 1> Searching ..\..\..\..\out\win32\release\lib\camerageometry.lib: 1> Searching ..\..\..\..\out\win32\release\lib\geometry.lib: 1> Found "public: __thiscall VisionMap::Geometry::Box2d::operator class VisionMap::Geometry::Box2DInt(void)const " (??BBox2d@Geometry@VisionMap@@QBE?AVBox2DInt@12@XZ) 1> Referenced in FocusDlg.obj 1> Loaded geometry.lib(Box2d.obj) 1>Processed /DEFAULTLIB:CGAL-vc80-mt.lib 1>Processed /DEFAULTLIB:boost_thread-vc80-mt-1_33_1.lib What's going on here? I think I understand this bit: 1>Processed /DEFAULTLIB:libgslcblasMD.lib 1>Searching libraries 1> Searching V:\Src\Solutions\\..\..\\Common\Win32\Lib\PlxApi.lib: 1> Searching ..\..\..\..\out\win32\release\lib\camerageometry.lib: 1> Searching ..\..\..\..\out\win32\release\lib\geometry.lib: 1> Found "public: __thiscall VisionMap::Geometry::Box2d::operator class VisionMap::Geometry::Box2DInt(void)const " (??BBox2d@Geometry@VisionMap@@QBE?AVBox2DInt@12@XZ) 1> Referenced in FocusDlg.obj 1> Loaded geometry.lib(Box2d.obj) It's trying to find the implementation of the above operator, which is used somewhere in FocusDlg.cpp, and it finds it in geometry.lib. But what does 1>Processed /DEFAULTLIB:libgslcblasMD.lib mean? What determines the order of symbol resolution? Why is it loading this particular symbol while processing libgslcblasMD.lib which is a 3rd party library? Or am I reading it wrong? It seems that the linker is going through the symbols referenced in the project's various object files, but I have no idea in what order. It then searches the static libraries the project uses - by project reference, explicit import and automatic default library imports; but it does so in an order that, again, seems arbitrary to me. When it finds a symbol, for example in geometry.lib, it then continues to find a bunch of other symbols from the same lib: 1> Searching V:\Src\Solutions\\..\..\\Common\Win32\Lib\PlxApi.lib: 1> Searching ..\..\..\..\out\win32\release\lib\camerageometry.lib: 1> Searching ..\..\..\..\out\win32\release\lib\geometry.lib: 1> Found "public: __thiscall VisionMap::Geometry::Box2d::operator class VisionMap::Geometry::Box2DInt(void)const " (??BBox2d@Geometry@VisionMap@@QBE?AVBox2DInt@12@XZ) 1> Referenced in FocusDlg.obj 1> Loaded geometry.lib(Box2d.obj) 1>Processed /DEFAULTLIB:CGAL-vc80-mt.lib 1>Processed /DEFAULTLIB:boost_thread-vc80-mt-1_33_1.lib 1> Found "public: __thiscall VisionMap::Geometry::Box2DInt::Box2DInt(int,int,int,int)" (??0Box2DInt@Geometry@VisionMap@@QAE@HHHH@Z) 1> Referenced in FocusDlg.obj 1> Referenced in ImageView.obj 1> Referenced in geometry.lib(Box2d.obj) 1> Loaded geometry.lib(Box2DInt.obj) 1> Found "public: virtual __thiscall VisionMap::Geometry::Point3d::~Point3d(void)" (??1Point3d@Geometry@VisionMap@@UAE@XZ) 1> Referenced in GPSFrm.obj 1> Referenced in MainFrm.obj 1> Loaded geometry.lib(Point3d.obj) 1> Found "void __cdecl VisionMap::Geometry::serialize<class boost::archive::binary_oarchive>(class boost::archive::binary_oarchive &,class VisionMap::Geometry::Point3d &,unsigned int)" (??$serialize@Vbinary_oarchive@archive@boost@@@Geometry@VisionMap@@YAXAAVbinary_oarchive@archive@boost@@AAVPoint3d@01@I@Z) 1> Referenced in GPSFrm.obj 1> Referenced in MainFrm.obj 1> Loaded geometry.lib(GeometrySerializationImpl.obj) But then, for some reason, it goes on to find symbols that are defined in other libs, and returns to geometry later on (a bunch of times). So clearly it's not doing "look in geometry and load every symbol that's references in the project, and then continue to other libraries". But it's not clear to me what is the order of symbol lookup. And what's the deal with all those libraries being processed at the beginning of the linker's work, but not finding any symbols to load from them? Does this project really not use anything from msvcrt.lib, kernel32.lib? Seems unlikely. So basically I'm looking to decipher the underlying order in the linker's operation.

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• Can you help me get my head around openssl public key encryption with rsa.h in c++?

  - by Ben

  Hi there, I am trying to get my head around public key encryption using the openssl implementation of rsa in C++. Can you help? So far these are my thoughts (please do correct if necessary) Alice is connected to Bob over a network Alice and Bob want secure communications Alice generates a public / private key pair and sends public key to Bob Bob receives public key and encrypts a randomly generated symmetric cypher key (e.g. blowfish) with the public key and sends the result to Alice Alice decrypts the ciphertext with the originally generated private key and obtains the symmetric blowfish key Alice and Bob now both have knowledge of symmetric blowfish key and can establish a secure communication channel Now, I have looked at the openssl/rsa.h rsa implementation (since I already have practical experience with openssl/blowfish.h), and I see these two functions: int RSA_public_encrypt(int flen, unsigned char *from, unsigned char *to, RSA *rsa, int padding); int RSA_private_decrypt(int flen, unsigned char *from, unsigned char *to, RSA *rsa, int padding); If Alice is to generate *rsa, how does this yield the rsa key pair? Is there something like rsa_public and rsa_private which are derived from rsa? Does *rsa contain both public and private key and the above function automatically strips out the necessary key depending on whether it requires the public or private part? Should two unique *rsa pointers be generated so that actually, we have the following: int RSA_public_encrypt(int flen, unsigned char *from, unsigned char *to, RSA *rsa_public, int padding); int RSA_private_decrypt(int flen, unsigned char *from, unsigned char *to, RSA *rsa_private, int padding); Secondly, in what format should the *rsa public key be sent to Bob? Must it be reinterpreted in to a character array and then sent the standard way? I've heard something about certificates -- are they anything to do with it? Sorry for all the questions, Best Wishes, Ben. EDIT: Coe I am currently employing: /* * theEncryptor.cpp * * * Created by ben on 14/01/2010. * Copyright 2010 __MyCompanyName__. All rights reserved. * */ #include "theEncryptor.h" #include <iostream> #include <sys/socket.h> #include <sstream> theEncryptor::theEncryptor() { } void theEncryptor::blowfish(unsigned char *data, int data_len, unsigned char* key, int enc) { // hash the key first! unsigned char obuf[20]; bzero(obuf,20); SHA1((const unsigned char*)key, 64, obuf); BF_KEY bfkey; int keySize = 16;//strlen((char*)key); BF_set_key(&bfkey, keySize, obuf); unsigned char ivec[16]; memset(ivec, 0, 16); unsigned char* out=(unsigned char*) malloc(data_len); bzero(out,data_len); int num = 0; BF_cfb64_encrypt(data, out, data_len, &bfkey, ivec, &num, enc); //for(int i = 0;i<data_len;i++)data[i]=out[i]; memcpy(data, out, data_len); free(out); } void theEncryptor::generateRSAKeyPair(int bits) { rsa = RSA_generate_key(bits, 65537, NULL, NULL); } int theEncryptor::publicEncrypt(unsigned char* data, unsigned char* dataEncrypted,int dataLen) { return RSA_public_encrypt(dataLen, data, dataEncrypted, rsa, RSA_PKCS1_OAEP_PADDING); } int theEncryptor::privateDecrypt(unsigned char* dataEncrypted, unsigned char* dataDecrypted) { return RSA_private_decrypt(RSA_size(rsa), dataEncrypted, dataDecrypted, rsa, RSA_PKCS1_OAEP_PADDING); } void theEncryptor::receivePublicKeyAndSetRSA(int sock, int bits) { int max_hex_size = (bits / 4) + 1; char keybufA[max_hex_size]; bzero(keybufA,max_hex_size); char keybufB[max_hex_size]; bzero(keybufB,max_hex_size); int n = recv(sock,keybufA,max_hex_size,0); n = send(sock,"OK",2,0); n = recv(sock,keybufB,max_hex_size,0); n = send(sock,"OK",2,0); rsa = RSA_new(); BN_hex2bn(&rsa->n, keybufA); BN_hex2bn(&rsa->e, keybufB); } void theEncryptor::transmitPublicKey(int sock, int bits) { const int max_hex_size = (bits / 4) + 1; long size = max_hex_size; char keyBufferA[size]; char keyBufferB[size]; bzero(keyBufferA,size); bzero(keyBufferB,size); sprintf(keyBufferA,"%s\r\n",BN_bn2hex(rsa->n)); sprintf(keyBufferB,"%s\r\n",BN_bn2hex(rsa->e)); int n = send(sock,keyBufferA,size,0); char recBuf[2]; n = recv(sock,recBuf,2,0); n = send(sock,keyBufferB,size,0); n = recv(sock,recBuf,2,0); } void theEncryptor::generateRandomBlowfishKey(unsigned char* key, int bytes) { /* srand( (unsigned)time( NULL ) ); std::ostringstream stm; for(int i = 0;i<bytes;i++){ int randomValue = 65 + rand()% 26; stm << (char)((int)randomValue); } std::string str(stm.str()); const char* strs = str.c_str(); for(int i = 0;bytes;i++)key[i]=strs[i]; */ int n = RAND_bytes(key, bytes); if(n==0)std::cout<<"Warning key was generated with bad entropy. You should not consider communication to be secure"<<std::endl; } theEncryptor::~theEncryptor(){}

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• Active Merchant Paypal Recurring Pem Error Neither Pub Nor Priv Key

  - by Andy

  Hi, I am trying to use ActiveMerchant to make a Paypal Recurring transaction call. I used the patch here: http://blog.vuzit.com/2008/08/01/paypal-website-payments-pro-us-with-recurring-billing-and-activemerchant/ and I'm stuck on this here: ActiveMerchant::Billing::PaypalGateway.pem_file = File.read('paypal_cert.pem') I am fairly sure the pem file is correctly downloaded from paypal. The error I receive is: /Library/Ruby/Gems/1.8/gems/activemerchant-1.5.1/lib/active_merchant/lib/connection.rb:129:in initialize': Neither PUB key nor PRIV key:: nested asn1 error (OpenSSL::PKey::RSAError) from /Library/Ruby/Gems/1.8/gems/activemerchant-1.5.1/lib/active_merchant/lib/connection.rb:129:innew' from calling the commit method from line 49 of paypal_pro_recurring. I simply have 2 files - paypal_pro_recurring.rb from the tutorial and paypalTest.rb which I wrote and simply requires all files and calls the function. I hope the error isn't something stupid like I must require from an environment file or something. Thanks all!

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• What is the right tool to detect VMT or heap corruption in Delphi ?

  - by Roland Bengtsson

  I'm a member in a team that use Delphi 2007 for a larger application and we suspect heap corruption because sometimes there are strange bugs that have no other explanation. I believe that the Rangechecking option for the compiler is only for arrays. I want a tool that give an exception or log when there is a write on a memory address that is not allocated by the application. Regards EDIT: The error is of type: Error: Access violation at address 00404E78 in module 'BoatLogisticsAMCAttracsServer.exe'. Read of address FFFFFFDD EDIT2: Thanks for all suggestions. Unfortunately I think that the solution is deeper than that. We use a patched version of Bold for Delphi as we own the source. Probably there are some errors introduced in the Bold framwork. Yes we have a log with callstacks that are handled by JCL and also trace messages. So a callstack with the exception can lock like this: 20091210 16:02:29 (2356) [EXCEPTION] Raised EBold: Failed to derive ServerSession.mayDropSession: Boolean OCL expression: not active and not idle and timeout and (ApplicationKernel.allinstances->first.CurrentSession <> self) Error: Access violation at address 00404E78 in module 'BoatLogisticsAMCAttracsServer.exe'. Read of address FFFFFFDD. At Location BoldSystem.TBoldMember.CalculateDerivedMemberWithExpression (BoldSystem.pas:4016) Inner Exception Raised EBold: Failed to derive ServerSession.mayDropSession: Boolean OCL expression: not active and not idle and timeout and (ApplicationKernel.allinstances->first.CurrentSession <> self) Error: Access violation at address 00404E78 in module 'BoatLogisticsAMCAttracsServer.exe'. Read of address FFFFFFDD. At Location BoldSystem.TBoldMember.CalculateDerivedMemberWithExpression (BoldSystem.pas:4016) Inner Exception Call Stack: [00] System.TObject.InheritsFrom (sys\system.pas:9237) Call Stack: [00] BoldSystem.TBoldMember.CalculateDerivedMemberWithExpression (BoldSystem.pas:4016) [01] BoldSystem.TBoldMember.DeriveMember (BoldSystem.pas:3846) [02] BoldSystem.TBoldMemberDeriver.DoDeriveAndSubscribe (BoldSystem.pas:7491) [03] BoldDeriver.TBoldAbstractDeriver.DeriveAndSubscribe (BoldDeriver.pas:180) [04] BoldDeriver.TBoldAbstractDeriver.SetDeriverState (BoldDeriver.pas:262) [05] BoldDeriver.TBoldAbstractDeriver.Derive (BoldDeriver.pas:117) [06] BoldDeriver.TBoldAbstractDeriver.EnsureCurrent (BoldDeriver.pas:196) [07] BoldSystem.TBoldMember.EnsureContentsCurrent (BoldSystem.pas:4245) [08] BoldSystem.TBoldAttribute.EnsureNotNull (BoldSystem.pas:4813) [09] BoldAttributes.TBABoolean.GetAsBoolean (BoldAttributes.pas:3069) [10] BusinessClasses.TLogonSession._GetMayDropSession (code\BusinessClasses.pas:31854) [11] DMAttracsTimers.TAttracsTimerDataModule.RemoveDanglingLogonSessions (code\DMAttracsTimers.pas:237) [12] DMAttracsTimers.TAttracsTimerDataModule.UpdateServerTimeOnTimerTrig (code\DMAttracsTimers.pas:482) [13] DMAttracsTimers.TAttracsTimerDataModule.TimerKernelWork (code\DMAttracsTimers.pas:551) [14] DMAttracsTimers.TAttracsTimerDataModule.AttracsTimerTimer (code\DMAttracsTimers.pas:600) [15] ExtCtrls.TTimer.Timer (ExtCtrls.pas:2281) [16] Classes.StdWndProc (common\Classes.pas:11583) The inner exception part is the callstack at the moment an exception is reraised. EDIT3: The theory right now is that the Virtual Memory Table (VMT) is somehow broken. When this happen there is no indication of it. Only when a method is called an exception is raised (ALWAYS on address FFFFFFDD, -35 decimal) but then it is too late. You don't know the real cause for the error. Any hint of how to catch a bug like this is really appreciated!!! We have tried with SafeMM, but the problem is that the memory consumption is too high even when the 3 GB flag is used. So now I try to give a bounty to the SO community :) EDIT4: One hint is that according the log there is often (or even always) another exception before this. It can be for example optimistic locking in the database. We have tried to raise exceptions by force but in test environment it just works fine. EDIT5: Story continues... I did a search on the logs for the last 30 days now. The result: "Read of address FFFFFFDB" 0 "Read of address FFFFFFDC" 24 "Read of address FFFFFFDD" 270 "Read of address FFFFFFDE" 22 "Read of address FFFFFFDF" 7 "Read of address FFFFFFE0" 20 "Read of address FFFFFFE1" 0 So the current theory is that an enum (there is a lots in Bold) overwrite a pointer. I got 5 hits with different address above. It could mean that the enum holds 5 values where the second one is most used. If there is an exception a rollback should occur for the database and Boldobjects should be destroyed. Maybe there is a chance that not everything is destroyed and a enum still can write to an address location. If this is true maybe it is possible to search the code by a regexpr for an enum with 5 values ? EDIT6: To summarize, no there is no solution to the problem yet. I realize that I may mislead you a bit with the callstack. Yes there are a timer in that but there are other callstacks without a timer. Sorry for that. But there are 2 common factors. An exception with Read of address FFFFFFxx. Top of callstack is System.TObject.InheritsFrom (sys\system.pas:9237) This convince me that VilleK best describe the problem. I'm also convinced that the problem is somewhere in the Bold framework. But the BIG question is, how can problems like this be solved ? It is not enough to have an Assert like VilleK suggest as the damage has already happened and the callstack is gone at that moment. So to describe my view of what may cause the error: Somewhere a pointer is assigned a bad value 1, but it can be also 0, 2, 3 etc. An object is assigned to that pointer. There is method call in the objects baseclass. This cause method TObject.InheritsForm to be called and an exception appear on address FFFFFFDD. Those 3 events can be together in the code but they may also be used much later. I think this is true for the last method call. EDIT7: We work closely with the the author of Bold Jan Norden and he recently found a bug in the OCL-evaluator in Bold framework. When this was fixed these kinds of exceptions decreased a lot but they still occasionally come. But it is a big relief that this is almost solved.

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• Parsing C#, finding methods and putting try/catch to all methods

  - by erdogany

  I know it sounds weird but I am required to put a wrapping try catch block to every method to catch all exceptions. We have thousands of methods and I need to do it in an automated way. What do you suggest? I am planning to parse all cs files and detect methods and insert a try catch block with an application. Can you suggest me any parser that I can easily use? or anything that will help me... every method has its unique number like 5006 public static LogEntry Authenticate(....) { LogEntry logEntry = null; try { .... return logEntry; } catch (CompanyException) { throw; } catch (Exception ex) { logEntry = new LogEntry( "5006", RC.GetString("5006"), EventLogEntryType.Error, LogEntryCategory.Foo); throw new CompanyException(logEntry, ex); } } I created this for this; http://thinkoutofthenet.com/index.php/2009/01/12/batch-code-method-manipulation/

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• Cygwin command not found bad characters found in .bashrc 357\273\277

  - by mytwocents

  Hello, I'm new to Cygwin, I just installed it and attempted to set some simple environment variables. However, when I open the command shell, I get the error "#357\273\277 command not found" I found an article that discusses what the problem is and how to "discover" the hidden bad character: http://mblog.lib.umich.edu/DataDiscussions/archives/2010/01/index.html but I don't know how to resolve the issue by removing the character (which I validated was a problem in my .bashrc file using the od command). I attempted to change the preferences view in Notepad++ to UTF-8 and ANSI to no avail, but the file was not altered at all. Any help would be appreciated...

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• Any way to view dynamic java content ex-post? Browser session still open

  - by Ryan

  I feel like a grandpa from 1996 asking this, but is it at all possible to view a representation of a particular screen that was rendered as part of a java-based online checkout process I executed a couple days ago? I haven't cleared my browser cache or temp files or anything, and I don't think I've restarted the comp or even the browser since. I'm using mac OS X 10.6.8, and the page(s) were viewed with Chrome version 21.0.1180.89 in standard mode (not incognito). Specifically the page in question was part of Verizon Wireless's 'iconic' contract/checkout process, which leads the user through several pages to make selections on various criteria and seems to be based on java. (Obviously I'm a dummy regarding web stuff so the question is probably not very well defined, I'm happy to elaborate). ^This is the tl;dr question. If it belongs on another site please just let me know. This is what I've been able to figure out on my own, for the bored / ultra-helpful / those who could use a laugh at a noob fumbling his way around cache files with no idea what he's doing: The progress through the selection pages is very clear in Chrome's browser history, the sequential pages are: https://www.verizonwireless.com/b2c/accountholder/estore/phoneupgrade?execution=e3s2 https://www.verizonwireless.com/b2c/accountholder/estore/phoneupgrade?execution=e3s3 https://www.verizonwireless.com/b2c/accountholder/estore/phoneupgrade?execution=e3s4 https://www.verizonwireless.com/b2c/accountholder/estore/phoneupgrade?execution=e3s5 https://preorder.verizonwireless.com/iconic/?format=JSON&value={%22action%22:%22START_ORDER%22,%22custType%22:%22EXISTING%22,%22orderType%22:%22UPGRADE%22,%22lookupMtn%22:%22*(NumberA)*%22,%22lineData%22:[{%22mtn%22:%22*(NumberA)*%22,%22upgType%22:%22ALTERNATE_UPGRADE%22,%22eligibleMtn%22:%22*(NumberB)*%22}]} https://preorder.verizonwireless.com/iconic/iconic/secured/screens/IconicOrder.do?format=JSON&value={%22action%22:%22START_ORDER%22,%22custType%22:%22EXISTING%22,%22orderType%22:%22UPGRADE%22,%22lookupMtn%22:%22*(NumberA)*%22,%22lineData%22:[{%22mtn%22:%22*(NumberA)*%22,%22upgType%22:%22ALTERNATE_UPGRADE%22,%22eligibleMtn%22:%22*(NumberB)*%22}]} https://preorder.verizonwireless.com/iconic/iconic/secured/screens/IconicEligibility.do https://preorder.verizonwireless.com/iconic/iconic/secured/screens/IconicDeviceSelection.do https://preorder.verizonwireless.com/iconic/iconic/secured/screens/PlanOptions.do https://preorder.verizonwireless.com/iconic/iconic/secured/screens/IconicFeatures.do https://preorder.verizonwireless.com/iconic/iconic/secured/screens/IconicAccessories.do https://preorder.verizonwireless.com/iconic/iconic/secured/screens/IconicShipmentBilling.do https://preorder.verizonwireless.com/iconic/iconic/secured/screens/IconicReview.do https://preorder.verizonwireless.com/iconic/iconic/secured/screens/IconicPaymentCreditInfo.do https://preorder.verizonwireless.com/iconic/iconic/secured/screens/IconicConfirmation.do The visual representation I would need could come from any of these pages, as the necessary information was shown at the top of each of them (although the two with long URLs were just like redirects or something). Of course, clicking the link to the page in History right now requires a new sign-in and just returns the user to the initial step for doing the process again; it does not pull up a representation of the page as it was seen several days ago. This I understand. Instead using Chrome's integrated cache viewer by typing about:cache in the address bar, I can search and find links that appear to be relevant, when I click on the link I just get a http header and a bunch of hexadecimal gobbledygook. I've tried to use the URL at the top of the cache and URLs in the http headers, but they take me to current versions of those pages and not the versions I saw during the checkout process. I tried this with a few of them but stopped because I noticed that it updated the date in the http header to the present moment and I don't want to take chances overwriting the cache files since I don't know what I'm doing. The links to the cache files look like this: https://login.verizonwireless.com/amserver/UI/Login?realm=vzw&goto=https%3A%2F%2Fpreorder.verizonwireless.com%3A443%2Ficonic%2Ficonic%2Fsecured%2Fscreens%2FPlanOptions.do https://preorder.verizonwireless.com/iconic/iconic/screens/customerTypeOverlay.jsp https://verizonwireless.tt.omtrdc.net/m2/verizonwireless/mbox/standard?mboxHost=login.verizonwireless.com&mboxSession=1347776884663-145230&mboxPC=1347609748832-956765.19&mboxPage=1347776884663-145230&screenHeight=1200&screenWidth=1920&browserWidth=1299&browserHeight=868&browserTimeOffset=-420&colorDepth=24&mboxCount=1&mbox=My_Verizon_Global&mboxId=0&mboxTime=1347751684666&mboxURL=https%3A%2F%2Flogin.verizonwireless.com%2Famserver%2FUI%2FLogin%3Frealm%3Dvzw%26goto%3Dhttps%253A%252F%252Fpreorder.verizonwireless.com%253A443%252Ficonic%252Ficonic%252Fsecured%252Fscreens%252FPlanOptions.do&mboxReferrer=&mboxVersion=41 and https://verizonwireless.tt.omtrdc.net/m2/verizonwireless/mbox/standard?mboxHost=login.verizonwireless.com&mboxSession=1347735676953-663794&mboxPC=1347609748832-956765.19&mboxPage=1347738347511-550383&screenHeight=1200&screenWidth=1920&browserWidth=1299&browserHeight=845&browserTimeOffset=-420&colorDepth=24&mboxCount=1&mbox=My_Verizon_Global&mboxId=0&mboxTime=1347713147517&mboxURL=https%3A%2F%2Flogin.verizonwireless.com%2Famserver%2FUI%2FLogin%3Frealm%3Dvzw%26goto%3Dhttps%253A%252F%252Fpreorder.verizonwireless.com%253A443%252Ficonic%252Ficonic%252Fsecured%252Fscreens%252FIconicOrder.do%253Fformat%253DJSON%2526value%253D%257B%252522action%252522%253A%252522START_ORDER%252522%252C%252522custType%252522%253A%252522EXISTING%252522%252C%252522orderType%252522%253A%252522UPGRADE%252522%252C%252522lookupMtn%252522%253A%252522*(NumberA)*%252522%252C%252522lineData%252522%253A%255B%257B%252522mtn%252522%253A%252522*(NumberA)*%252522%252C%252522upgType%252522%253A%252522ALTERNATE_UPGRADE%252522%252C%252522eligibleMtn%252522%253A%252522*(NumberB)*%252522%257D%255D%257D&mboxReferrer=&mboxVersion=41 and the http headers look like this: HTTP/1.1 200 OK Server: VZW Date: Sun, 16 Sep 2012 14:55:48 GMT Cache-control: private Pragma: no-cache Expires: 0 X-dsameversion: VZW Am_client_type: genericHTML Content-type: text/html;charset=ISO-8859-1 Content-Encoding: gzip Content-Length: 6220 and HTTP/1.1 200 OK Cache-Control: no-cache Date: Sun, 16 Sep 2012 16:16:30 GMT Content-Type: text/html Expires: Thu, 01 Jan 1970 00:00:00 GMT Content-Encoding: gzip X-Powered-By: Servlet/2.5 JSP/2.1 and HTTP/1.1 302 Moved Temporarily Server: VZW Date: Sun, 16 Sep 2012 16:29:32 GMT Cache-control: private Pragma: no-cache X-dsameversion: VZW Am_client_type: genericHTML Location: https://preorder.verizonwireless.com:443/iconic/iconic/secured/screens/IconicOrder.do?format=JSON&value={%22action%22:%22START_ORDER%22,%22custType%22:%22EXISTING%22,%22orderType%22:%22UPGRADE%22,%22lookupMtn%22:%22*(*(NumberA)*%22,%22lineData%22:[{%22mtn%22:%22*(NumberA)*%22,%22upgType%22:%22ALTERNATE_UPGRADE%22,%22eligibleMtn%22:%22*(NumberB)*%22}]} Content-length: 0 ^^this last one actually returned me to a page in the middle of the process when I used the "Location:" given in this http header rather than the URL at the top of the cache page (and was signed in to Verizon's website through a separate tab), but the page it took me to had already been updated to reflect new information, it wasn't presented as of the time the actions were taken several days ago when the page was originally viewed. (It's clear I can't achieve what I'm looking for by visiting current versions of these pages on the web…I should actually probably disable my network adapter while testing this out). The cache folder seems promising, but I don't know what to make of all that hexadecimal mess - if it contains what I'm looking for and if so, how to view it. Finally, the third thing I've come across is the Google Chrome cache folder on my local machine, at ~/Library/Caches/Google/Chrome/ then there are 'Default' and 'Media Cache' folders within. There are ~4,000 files in the former averaging ~100kb each, and 100 files in the latter averaging ~900kb each. The filenames all start "f_00xxxx" except for files titled data_0 through data_4 in each folder. I'm not sure how to observe the contents of these files and don't really want to start opening them up and potentially overwriting existing cached pages, as I notice there are already some holes in the arrangement of the files which I have never deleted manually. Hopefully this is an easy question to answer for someone who knows this stuff, admittedly web stuff is my weak point. As such, I've spent the past five hours searching around and trying to provide all the information I can. I'm probably asking for a miracle - like can those cached pages full of hexadecimal data be used to recreate the representation of the information that was on screen during the process? Or could screenshots of the previously viewed webpages be lurking in the /Caches folder? I have doubt because the content wasn't viewed at a permanent link, rather it seems like the on-screen information was served by Verizon's db, and probably securely so. I'm just not sure if Chrome saves the visual rendering of the page contents somewhere, even just temporarily. Alternatively I would be happy just to get the raw data that was on the page, even if not a visual representation…I just need to be able to demonstrate the phone line that was referenced on this page: https://preorder.verizonwireless.com/iconic/iconic/secured/screens/IconicFeatures.do . Can anyone point me in the right direction?

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• Parse error when trying to install app on Asus eee PC 701 running Android 2.0

  - by Don

  A beta tester of mine has a Asus eee pc 701 running Android 2.0 and he is trying to install an app on it from my web site. He is able to download the app but is getting a "Parse Error: There is a problem parsing the package" error. I don't really know if this problem is with the eee pc or with the apk since he is the first person to try to install it. I built it for 2.0, the manifest has 5 as the minimum API level and I used Eclipse to export and sign it. But this is my first Android app and he is the first to try to install it, so I am not sure what the problem might be? Could just be the Android implementation too. Here is a site about putting Android on the Asus: http://www.liliputing.com/2009/01/how-to-built-google-android-for-the-asus-eee-pc-701.html Any thoughts on what I might try to get this app installed on his machine?

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• Using OpenSessionInViewInterceptor with Hibernate and JSF 2

  - by sammy

  I'm building an application in Hibernate, Spring and JSF2 using only annotations. How can I take advantage of OpenSessionInViewInterceptor found in Spring to catch any hibernate session that might open within a bean? I'm trying to elegantly solve the common “failed to lazily initialize a collection of role: your.Class.assocation no session or session was closed.” problem when trying to read from a yet uninitialized list of POJOs inside another POJO (A Tag entity retrieved by a DAO that contains a List of Project objects I want to read). I've found this: http://www.paulcodding.com/blog/2008/01/21/using-the-opensessioninviewinterceptor-for-spring-hibernate3/ but failed to make use of it in my environment. Please provide a detailed answer, as the Internet is full of foggy, unhelpful tutorials. I'll also be greatful for an alternative solution, given a step-by-step instruction is provided.

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• How to upload video on YouTube with Ruby

  - by viatropos

  I am trying to upload a youtube video using the GData gem (I have seen the youtube_g gem but would like to make it work with pure GData if possible), but I keep getting this error: GData::Client::BadRequestError in 'MyProject::Google::YouTube should upload the actual video to youtube (once it does, mock this test out)' request error 400: No file found in upload request. I am using this code: def metadata data = <<-EOF <?xml version="1.0"?> <entry xmlns="http://www.w3.org/2005/Atom" xmlns:media="http://search.yahoo.com/mrss/" xmlns:yt="http://gdata.youtube.com/schemas/2007"> <media:group> <media:title type="plain">Bad Wedding Toast</media:title> <media:description type="plain"> I gave a bad toast at my friend's wedding. </media:description> <media:category scheme="http://gdata.youtube.com/schemas/2007/categories.cat">People</media:category> <media:keywords>toast, wedding</media:keywords> </media:group> </entry> EOF end @yt = GData::Client::YouTube.new @yt.clientlogin("name", "pass") @yt.developer_key = "myKey" url = "http://uploads.gdata.youtube.com/feeds/api/users/name/uploads" mime_type = "multipart/related" file_path = "sample_upload.mp4" @yt.post_file(url, file_path, mime_type, metadata) What is the recommended/standard way for uploading videos to youtube with ruby, what is your method? Update After applying the changes to wrapped_entry, the string it produces looks like this: --END_OF_PART_59003 Content-Type: application/atom+xml; charset=UTF-8 <?xml version="1.0"?> <entry xmlns="http://www.w3.org/2005/Atom" xmlns:media="http://search.yahoo.com/mrss/" xmlns:yt="http://gdata.youtube.com/schemas/2007"> <media:group> <media:title type="plain">Bad Wedding Toast</media:title> <media:description type="plain"> I gave a bad toast at my friend's wedding. </media:description> <media:category scheme="http://gdata.youtube.com/schemas/2007/categories.cat">People</media:category> <media:keywords>toast, wedding</media:keywords> </media:group> </entry> --END_OF_PART_59003 Content-Type: multipart/related Content-Transfer-Encoding: binary ... and inspecting the request and response looks like this: Request: <GData::HTTP::Request:0x1b8bb44 @method=:post @url="http://uploads.gdata.youtube.com/feeds/api/users/lancejpollard/uploads" @body=#<GData::HTTP::MimeBody:0x1b8c738 @parts=[#<GData::HTTP::MimeBodyString:0x1b8c058 @bytes_read=0 @string="--END_OF_PART_30909\r\nContent-Type: application/atom+xml; charset=UTF-8\r\n\r\n <?xml version=\"1.0\"?>\n<entry xmlns=\"http://www.w3.org/2005/Atom\"\n xmlns:media=\"http://search.yahoo.com/mrss/\"\n xmlns:yt=\"http://gdata.youtube.com/schemas/2007\">\n <media:group>\n <media:title type=\"plain\">Bad Wedding Toast</media:title>\n <media:description type=\"plain\">\n I gave a bad toast at my friend's wedding.\n </media:description>\n <media:category scheme=\"http://gdata.youtube.com/schemas/2007/categories.cat\">People</media:category>\n <media:keywords>toast wedding</media:keywords>\n </media:group>\n</entry> \n\r\n--END_OF_PART_30909\r\nContent-Type: multipart/related\r\nContent-Transfer-Encoding: binary\r\n\r\n"> #<File:/Users/Lance/Documents/Development/git/thing/spec/fixtures/sample_upload.mp4> #<GData::HTTP::MimeBodyString:0x1b8c044 @bytes_read=0 @string="\r\n--END_OF_PART_30909--"] @current_part=0 @boundary="END_OF_PART_30909" @headers={"Slug"="sample_upload.mp4" "User-Agent"="GoogleDataRubyUtil-AnonymousApp" "GData-Version"="2" "X-GData-Key"="key=AI39si7jkhs_ECjF4unOQz8gpWGSKXgq0KJpm8wywkvBSw4s8oJd5p5vkpvURHBNh-hiYJtoKwQqSfot7KoCkeCE32rNcZqMxA" "Content-Type"="multipart/related; boundary=\"END_OF_PART_30909\"" "MIME-Version"="1.0"} Response: #<GData::HTTP::Response:0x1b897e0 @body="No file found in upload request." @headers={"cache-control"=>"no-cache no-store must-revalidate" "connection"=>"close" "expires"=>"Fri 01 Jan 1990 00:00:00 GMT" "content-type"=>"text/plain; charset=utf-8" "date"=>"Fri 11 Dec 2009 02:10:25 GMT" "server"=>"Upload Server Built on Nov 30 2009 13:21:18 (1259616078)" "x-xss-protection"=>"0" "content-length"=>"32" "pragma"=>"no-cache"} @status_code=400> Still not working, I'll have to check it out more with those changes.

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• Error when specifying tag attributes in NHaml

  - by jessegavin

  I am just getting started with NHaml and ran into a snag. This is my application.haml file: %html %head %title = Get Some Data %link{ href="/media/css/styles.css", rel="Stylesheet", type="text/css" } %body %div.page %h1 = Get Some Data _ When I try to view in a browser it throw the following error: NHaml.Exceptions.SyntaxException: The attribute ',' is occurs twice. If I remove the line beginning with %link it works fine. What am I doing wrong? I am following the step-by-step from Brian Hartsock: http://blog.brianhartsock.com/2009/01/15/using-nhaml-from-source/#nhaml_reference

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• Millions of SYN_RECV connections, no DDoS

  - by ThomK

  We have such server structure: reverse proxy (nginx) - worker (uwsgi) - postgresql / memcached. All servers are in local network behind router, with NATed external ip:ports (http/s 80/443 to proxy, and ssh 22 to all servers). Problem is, that sometimes proxy server netstat reports MILLIONS of SYN_RECV connections. From same IP / same ports. Like that: nginx ~ # netstat -n | grep 83.238.153.195 tcp 0 0 192.168.1.1:80 83.238.153.195:3107 SYN_RECV tcp 0 0 192.168.1.1:80 83.238.153.195:3107 SYN_RECV tcp 0 0 192.168.1.1:80 83.238.153.195:3107 SYN_RECV tcp 0 0 192.168.1.1:80 83.238.153.195:3107 SYN_RECV tcp 0 0 192.168.1.1:80 83.238.153.195:3107 SYN_RECV tcp 0 0 192.168.1.1:80 83.238.153.195:3107 SYN_RECV tcp 0 0 192.168.1.1:80 83.238.153.195:3107 SYN_RECV tcp 0 0 192.168.1.1:80 83.238.153.195:3107 SYN_RECV tcp 0 0 192.168.1.1:80 83.238.153.195:3107 SYN_RECV tcp 0 0 192.168.1.1:80 83.238.153.195:3107 SYN_RECV [...] And this is not DDoS, because all IPs affected belongs to our website users. On side note, users says that it's not affecting them. Website is online and working, but... that particular one (from example above) told me that website is down and Firefox can't connect. I've done tcpdump. 19:42:14.826011 IP 83.238.153.195.zephyr-srv > 192.168.1.1.http: Flags [S], seq 1845850583, win 65535, options [mss 1412,nop,wscale 0,nop,nop,sackOK], length 0 19:42:14.826042 IP 192.168.1.1.http > 83.238.153.195.zephyr-srv: Flags [S.], seq 2835837547, ack 1845850584, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:42:17.887331 IP 83.238.153.195.zephyr-srv > 192.168.1.1.http: Flags [S], seq 1845850583, win 65535, options [mss 1412,nop,wscale 0,nop,nop,sackOK], length 0 19:42:17.887343 IP 192.168.1.1.http > 83.238.153.195.zephyr-srv: Flags [S.], seq 2835837547, ack 1845850584, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:42:19.065497 IP 192.168.1.1.http > 83.238.153.195.zephyr-srv: Flags [S.], seq 2835837547, ack 1845850584, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:42:23.918064 IP 83.238.153.195.zephyr-srv > 192.168.1.1.http: Flags [S], seq 1845850583, win 65535, options [mss 1412,nop,wscale 0,nop,nop,sackOK], length 0 19:42:23.918076 IP 192.168.1.1.http > 83.238.153.195.zephyr-srv: Flags [S.], seq 2835837547, ack 1845850584, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:42:25.265499 IP 192.168.1.1.http > 83.238.153.195.zephyr-srv: Flags [S.], seq 2835837547, ack 1845850584, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:42:37.265501 IP 192.168.1.1.http > 83.238.153.195.zephyr-srv: Flags [S.], seq 2835837547, ack 1845850584, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:42:37.758051 IP 83.238.153.195.2107 > 192.168.1.1.http: Flags [S], seq 564208067, win 65535, options [mss 1412,nop,wscale 0,nop,nop,sackOK], length 0 19:42:37.758069 IP 192.168.1.1.http > 83.238.153.195.2107: Flags [S.], seq 3188568660, ack 564208068, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:42:40.714360 IP 83.238.153.195.2107 > 192.168.1.1.http: Flags [S], seq 564208067, win 65535, options [mss 1412,nop,wscale 0,nop,nop,sackOK], length 0 19:42:40.714374 IP 192.168.1.1.http > 83.238.153.195.2107: Flags [S.], seq 3188568660, ack 564208068, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:42:41.665503 IP 192.168.1.1.http > 83.238.153.195.2107: Flags [S.], seq 3188568660, ack 564208068, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:42:46.751073 IP 83.238.153.195.2107 > 192.168.1.1.http: Flags [S], seq 564208067, win 65535, options [mss 1412,nop,wscale 0,nop,nop,sackOK], length 0 19:42:46.751087 IP 192.168.1.1.http > 83.238.153.195.2107: Flags [S.], seq 3188568660, ack 564208068, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:42:47.665498 IP 192.168.1.1.http > 83.238.153.195.2107: Flags [S.], seq 3188568660, ack 564208068, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:42:59.865499 IP 192.168.1.1.http > 83.238.153.195.2107: Flags [S.], seq 3188568660, ack 564208068, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:43:01.265500 IP 192.168.1.1.http > 83.238.153.195.zephyr-srv: Flags [S.], seq 2835837547, ack 1845850584, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:43:13.320382 IP 83.238.153.195.2114 > 192.168.1.1.http: Flags [S], seq 2136055006, win 65535, options [mss 1412,nop,wscale 0,nop,nop,sackOK], length 0 19:43:13.320399 IP 192.168.1.1.http > 83.238.153.195.2114: Flags [S.], seq 3754336171, ack 2136055007, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:43:16.320556 IP 83.238.153.195.2114 > 192.168.1.1.http: Flags [S], seq 2136055006, win 65535, options [mss 1412,nop,wscale 0,nop,nop,sackOK], length 0 19:43:16.320569 IP 192.168.1.1.http > 83.238.153.195.2114: Flags [S.], seq 3754336171, ack 2136055007, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:43:17.665498 IP 192.168.1.1.http > 83.238.153.195.2114: Flags [S.], seq 3754336171, ack 2136055007, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:43:22.250069 IP 83.238.153.195.2114 > 192.168.1.1.http: Flags [S], seq 2136055006, win 65535, options [mss 1412,nop,wscale 0,nop,nop,sackOK], length 0 19:43:22.250080 IP 192.168.1.1.http > 83.238.153.195.2114: Flags [S.], seq 3754336171, ack 2136055007, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:43:23.665500 IP 192.168.1.1.http > 83.238.153.195.2114: Flags [S.], seq 3754336171, ack 2136055007, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:43:23.865501 IP 192.168.1.1.http > 83.238.153.195.2107: Flags [S.], seq 3188568660, ack 564208068, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:43:35.665498 IP 192.168.1.1.http > 83.238.153.195.2114: Flags [S.], seq 3754336171, ack 2136055007, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:43:37.903038 IP 83.238.153.195.2213 > 192.168.1.1.http: Flags [S], seq 2918118729, win 65535, options [mss 1412,nop,wscale 0,nop,nop,sackOK], length 0 19:43:37.903054 IP 192.168.1.1.http > 83.238.153.195.2213: Flags [S.], seq 4145523337, ack 2918118730, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:43:40.772899 IP 83.238.153.195.2213 > 192.168.1.1.http: Flags [S], seq 2918118729, win 65535, options [mss 1412,nop,wscale 0,nop,nop,sackOK], length 0 19:43:40.772912 IP 192.168.1.1.http > 83.238.153.195.2213: Flags [S.], seq 4145523337, ack 2918118730, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:43:41.865500 IP 192.168.1.1.http > 83.238.153.195.2213: Flags [S.], seq 4145523337, ack 2918118730, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:43:46.793057 IP 83.238.153.195.2213 > 192.168.1.1.http: Flags [S], seq 2918118729, win 65535, options [mss 1412,nop,wscale 0,nop,nop,sackOK], length 0 19:43:46.793069 IP 192.168.1.1.http > 83.238.153.195.2213: Flags [S.], seq 4145523337, ack 2918118730, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:43:47.865500 IP 192.168.1.1.http > 83.238.153.195.2213: Flags [S.], seq 4145523337, ack 2918118730, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 19:43:49.465503 IP 192.168.1.1.http > 83.238.153.195.zephyr-srv: Flags [S.], seq 2835837547, ack 1845850584, win 5840, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0 Anyone have some thoughts on that?

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• Validating only selected fields using ASP.NET MVC 2 and Data Annotations

  - by thinknow

  I'm using Data Annotations with ASP.NET MVC 2 as demonstrated in this post: http://weblogs.asp.net/scottgu/archive/2010/01/15/asp-net-mvc-2-model-validation.aspx Everything works fine when creating / updating an entity where all required property values are specified in the form and valid. However, what if I only want to update some of the fields? For example, let's say I have an Account entity with 20 fields, but I only want to update Username and Password? ModelState.IsValid validates against all the properties, regardless of whether they are referenced in the submitted form. How can I get it to validate only the fields that are referenced in the form?

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• oAuth provider with Django-piston

  - by Martin Eve

  Hi, I'm working with django-piston to attempt to create an API that supports oAuth. I started out using the tutorial at: http://blog.carduner.net/2010/01/26/django-piston-and-oauth/ I added a consumer to piston's admin interface with key and secret both set to "abcd" for test purposes. The urls are successfully wired-up and the oAuth provider is called. However, running my get request token tests with tripit (python get_request_token.py "http://127.0.0.1:8000/api" abcd abcd), I receive the following error: Invalid signature. Expected signature base string: GET&http%3A%2F%2F127.0.0.1%3A8000%2Fapi%2Foauth%2Frequest_token%2F&oauth_consumer_key%3Dabcd%26oauth_nonce%3D0c0bdded5b1afb8eddf94f7ccc672658%26oauth_signature_method%3DHMAC-SHA1%26oauth_timestamp%3D1275135410%26oauth_version%3D1.0 The problem seems to lie inside the _check_signature method of Piston's oauth.py, where valid_sig = signature_method.check_signature(oauth_request, consumer, token, signature) is returning false. I can't, however, work out how to get the signature validated. Any ideas?

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• Strange Recurrent Excessive I/O Wait

  - by Chris

  I know quite well that I/O wait has been discussed multiple times on this site, but all the other topics seem to cover constant I/O latency, while the I/O problem we need to solve on our server occurs at irregular (short) intervals, but is ever-present with massive spikes of up to 20k ms a-wait and service times of 2 seconds. The disk affected is /dev/sdb (Seagate Barracuda, for details see below). A typical iostat -x output would at times look like this, which is an extreme sample but by no means rare: iostat (Oct 6, 2013) tps rd_sec/s wr_sec/s avgrq-sz avgqu-sz await svctm %util 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16.00 0.00 156.00 9.75 21.89 288.12 36.00 57.60 5.50 0.00 44.00 8.00 48.79 2194.18 181.82 100.00 2.00 0.00 16.00 8.00 46.49 3397.00 500.00 100.00 4.50 0.00 40.00 8.89 43.73 5581.78 222.22 100.00 14.50 0.00 148.00 10.21 13.76 5909.24 68.97 100.00 1.50 0.00 12.00 8.00 8.57 7150.67 666.67 100.00 0.50 0.00 4.00 8.00 6.31 10168.00 2000.00 100.00 2.00 0.00 16.00 8.00 5.27 11001.00 500.00 100.00 0.50 0.00 4.00 8.00 2.96 17080.00 2000.00 100.00 34.00 0.00 1324.00 9.88 1.32 137.84 4.45 59.60 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 22.00 44.00 204.00 11.27 0.01 0.27 0.27 0.60 Let me provide you with some more information regarding the hardware. It's a Dell 1950 III box with Debian as OS where uname -a reports the following: Linux xx 2.6.32-5-amd64 #1 SMP Fri Feb 15 15:39:52 UTC 2013 x86_64 GNU/Linux The machine is a dedicated server that hosts an online game without any databases or I/O heavy applications running. The core application consumes about 0.8 of the 8 GBytes RAM, and the average CPU load is relatively low. The game itself, however, reacts rather sensitive towards I/O latency and thus our players experience massive ingame lag, which we would like to address as soon as possible. iostat: avg-cpu: %user %nice %system %iowait %steal %idle 1.77 0.01 1.05 1.59 0.00 95.58 Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn sdb 13.16 25.42 135.12 504701011 2682640656 sda 1.52 0.74 20.63 14644533 409684488 Uptime is: 19:26:26 up 229 days, 17:26, 4 users, load average: 0.36, 0.37, 0.32 Harddisk controller: 01:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 1078 (rev 04) Harddisks: Array 1, RAID-1, 2x Seagate Cheetah 15K.5 73 GB SAS Array 2, RAID-1, 2x Seagate ST3500620SS Barracuda ES.2 500GB 16MB 7200RPM SAS Partition information from df: Filesystem 1K-blocks Used Available Use% Mounted on /dev/sdb1 480191156 30715200 425083668 7% /home /dev/sda2 7692908 437436 6864692 6% / /dev/sda5 15377820 1398916 13197748 10% /usr /dev/sda6 39159724 19158340 18012140 52% /var Some more data samples generated with iostat -dx sdb 1 (Oct 11, 2013) Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm %util sdb 0.00 15.00 0.00 70.00 0.00 656.00 9.37 4.50 1.83 4.80 33.60 sdb 0.00 0.00 0.00 2.00 0.00 16.00 8.00 12.00 836.00 500.00 100.00 sdb 0.00 0.00 0.00 3.00 0.00 32.00 10.67 9.96 1990.67 333.33 100.00 sdb 0.00 0.00 0.00 4.00 0.00 40.00 10.00 6.96 3075.00 250.00 100.00 sdb 0.00 0.00 0.00 0.00 0.00 0.00 0.00 4.00 0.00 0.00 100.00 sdb 0.00 0.00 0.00 2.00 0.00 16.00 8.00 2.62 4648.00 500.00 100.00 sdb 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.00 0.00 0.00 100.00 sdb 0.00 0.00 0.00 1.00 0.00 16.00 16.00 1.69 7024.00 1000.00 100.00 sdb 0.00 74.00 0.00 124.00 0.00 1584.00 12.77 1.09 67.94 6.94 86.00 Characteristic charts generated with rrdtool can be found here: iostat plot 1, 24 min interval: http://imageshack.us/photo/my-images/600/yqm3.png/ iostat plot 2, 120 min interval: http://imageshack.us/photo/my-images/407/griw.png/ As we have a rather large cache of 5.5 GBytes, we thought it might be a good idea to test if the I/O wait spikes would perhaps be caused by cache miss events. Therefore, we did a sync and then this to flush the cache and buffers: echo 3 > /proc/sys/vm/drop_caches and directly afterwards the I/O wait and service times virtually went through the roof, and everything on the machine felt like slow motion. During the next few hours the latency recovered and everything was as before - small to medium lags in short, unpredictable intervals. Now my question is: does anybody have any idea what might cause this annoying behaviour? Is it the first indication of the disk array or the raid controller dying, or something that can be easily mended by rebooting? (At the moment we're very reluctant to do this, however, because we're afraid that the disks might not come back up again.) Any help is greatly appreciated. Thanks in advance, Chris. Edited to add: we do see one or two processes go to 'D' state in top, one of which seems to be kjournald rather frequently. If I'm not mistaken, however, this does not indicate the processes causing the latency, but rather those affected by it - correct me if I'm wrong. Does the information about uninterruptibly sleeping processes help us in any way to address the problem? @Andy Shinn requested smartctl data, here it is: smartctl -a -d megaraid,2 /dev/sdb yields: smartctl 5.40 2010-07-12 r3124 [x86_64-unknown-linux-gnu] (local build) Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net Device: SEAGATE ST3500620SS Version: MS05 Serial number: Device type: disk Transport protocol: SAS Local Time is: Mon Oct 14 20:37:13 2013 CEST Device supports SMART and is Enabled Temperature Warning Disabled or Not Supported SMART Health Status: OK Current Drive Temperature: 20 C Drive Trip Temperature: 68 C Elements in grown defect list: 0 Vendor (Seagate) cache information Blocks sent to initiator = 1236631092 Blocks received from initiator = 1097862364 Blocks read from cache and sent to initiator = 1383620256 Number of read and write commands whose size <= segment size = 531295338 Number of read and write commands whose size > segment size = 51986460 Vendor (Seagate/Hitachi) factory information number of hours powered up = 36556.93 number of minutes until next internal SMART test = 32 Error counter log: Errors Corrected by Total Correction Gigabytes Total ECC rereads/ errors algorithm processed uncorrected fast | delayed rewrites corrected invocations [10^9 bytes] errors read: 509271032 47 0 509271079 509271079 20981.423 0 write: 0 0 0 0 0 5022.039 0 verify: 1870931090 196 0 1870931286 1870931286 100558.708 0 Non-medium error count: 0 SMART Self-test log Num Test Status segment LifeTime LBA_first_err [SK ASC ASQ] Description number (hours) # 1 Background short Completed 16 36538 - [- - -] # 2 Background short Completed 16 36514 - [- - -] # 3 Background short Completed 16 36490 - [- - -] # 4 Background short Completed 16 36466 - [- - -] # 5 Background short Completed 16 36442 - [- - -] # 6 Background long Completed 16 36420 - [- - -] # 7 Background short Completed 16 36394 - [- - -] # 8 Background short Completed 16 36370 - [- - -] # 9 Background long Completed 16 36364 - [- - -] #10 Background short Completed 16 36361 - [- - -] #11 Background long Completed 16 2 - [- - -] #12 Background short Completed 16 0 - [- - -] Long (extended) Self Test duration: 6798 seconds [113.3 minutes] smartctl -a -d megaraid,3 /dev/sdb yields: smartctl 5.40 2010-07-12 r3124 [x86_64-unknown-linux-gnu] (local build) Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net Device: SEAGATE ST3500620SS Version: MS05 Serial number: Device type: disk Transport protocol: SAS Local Time is: Mon Oct 14 20:37:26 2013 CEST Device supports SMART and is Enabled Temperature Warning Disabled or Not Supported SMART Health Status: OK Current Drive Temperature: 19 C Drive Trip Temperature: 68 C Elements in grown defect list: 0 Vendor (Seagate) cache information Blocks sent to initiator = 288745640 Blocks received from initiator = 1097848399 Blocks read from cache and sent to initiator = 1304149705 Number of read and write commands whose size <= segment size = 527414694 Number of read and write commands whose size > segment size = 51986460 Vendor (Seagate/Hitachi) factory information number of hours powered up = 36596.83 number of minutes until next internal SMART test = 28 Error counter log: Errors Corrected by Total Correction Gigabytes Total ECC rereads/ errors algorithm processed uncorrected fast | delayed rewrites corrected invocations [10^9 bytes] errors read: 610862490 44 0 610862534 610862534 20470.133 0 write: 0 0 0 0 0 5022.480 0 verify: 2861227413 203 0 2861227616 2861227616 100872.443 0 Non-medium error count: 1 SMART Self-test log Num Test Status segment LifeTime LBA_first_err [SK ASC ASQ] Description number (hours) # 1 Background short Completed 16 36580 - [- - -] # 2 Background short Completed 16 36556 - [- - -] # 3 Background short Completed 16 36532 - [- - -] # 4 Background short Completed 16 36508 - [- - -] # 5 Background short Completed 16 36484 - [- - -] # 6 Background long Completed 16 36462 - [- - -] # 7 Background short Completed 16 36436 - [- - -] # 8 Background short Completed 16 36412 - [- - -] # 9 Background long Completed 16 36404 - [- - -] #10 Background short Completed 16 36401 - [- - -] #11 Background long Completed 16 2 - [- - -] #12 Background short Completed 16 0 - [- - -] Long (extended) Self Test duration: 6798 seconds [113.3 minutes]

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• Asp.net MVC RSS help needed.

  - by coure06

  Following the tutorial at http://www.developerzen.com/2009/01/11/aspnet-mvc-rss-feed-action-result/ My code for the controller is like this, but i am not getting any result from http://www.gadgetfind.com/rss.xml public ActionResult Feed() { SyndicationFeed feed = new SyndicationFeed("Test Feed", "This is a test feed", new Uri("http://www.gadgetfind.com/rss.xml"), "TestFeedID", DateTime.Now); SyndicationItem item = new SyndicationItem("Test Item", "This is the content for Test Item", new Uri("http://www.gadgetfind.com/rss.xml"), "TestItemID", DateTime.Now); List<SyndicationItem> items = new List<SyndicationItem>(); items.Add(item); feed.Items = items; return new RssActionResult() { Feed = feed }; }

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• html.checkbox - explicit value to hidden field value

  - by Tassadaque

  Hi I am creating list of checkboxes in partial view by follwoing http://blog.stevensanderson.com/2010/01/28/editing-a-variable-length-list-aspnet-mvc-2-style/ code and Rendered HTML for checkboxes is as follows <%=Html.CheckBox("EmployeeID", new { value = user.EmployeeID, @class = "ccboxes", title = user.Designation + "(" + user.EmployeeName + ")" })%> <INPUT id=MemoUsers_a29f82e4-ebbc-47b0-8cdd-7d54f94143be__EmployeeID class=boxes title=Programmer(Zia) value=6 type=checkbox name=MemoUsers[a29f82e4-ebbc-47b0-8cdd-7d54f94143be].EmployeeID jQuery1276681299292="27"> <INPUT value=false type=hidden name=MemoUsers[a29f82e4-ebbc-47b0-8cdd-7d54f94143be].EmployeeID> In rendered html it can be seen that value attribute of hidden field is false. i want to assign explicit value(same as checkbox value) to this value. Is this possible using html.checkbox or html.checkboxfor. one way is recommended in http://stackoverflow.com/questions/626901/asp-net-mvc-rc2-checkboxes-with-explicit-values. Is there any other better way i want to do this as ModelState.IsValid is returning false because of hidden field value attribute Regards

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• jQuery - Add click event to Div and go to first link found

  - by LuckyShot

  Hi guys, I think I've been too much time looking at this function and just got stuck trying to figure out the nice clean way to do it. It's a jQuery function that adds a click event to any div with a click CSS class found in the page and when clicked it redirects the user to the first link found in the div. function clickabledivs() { $('.click').each( function (intIndex) { $(this).bind("click", function(){ window.location = $( "#"+$(this).attr('id')+" a:first-child" ).attr('href'); }); } ); } The code simply works although I'm pretty sure there is a fairly better way to accomplish it, specially the selector I am using: $( "#"+$(this).attr('id')+" a:first-child" ) looks too long and slow. Any ideas? Please let me know if you need more details. Thanks! PS: I've got some jQuery benchmarking reference from Project2k.de here: http://blog.projekt2k.de/2010/01/benchmarking-jquery-1-4/

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• How to reschedule Alarm Manager on Preference Change

  - by Priyank

  Hi, I have an Android Service. When a phone boots up, a broadcast receiver receives a notification and it schedules the service to run repeatedly at a gap of X minutes. Henceforth After every X minutes another broadcast receiver gets those notifications and kicks the service off, which does it's job and quits. So far so good. Now I want those X minutes to be configurable. I have a perf.xml similar to what is given at the link below. This XML captures all my preferences along with that of service timer. http://android-journey.blogspot.com/2010/01/for-almost-any-application-we-need-to.html Now when user changes preferences; how can I reschedule the alarm? Is there a way I can set a listener on preferences change? I have used only XML files to speficy preferences screen. Any ideas will be welcome. Cheers

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• How to get object properties of specific class in SPARQL

  - by udayalkonline

  hi, I have some ontology(campus.owl).There are tree classes(Student,Sport,Lecturer).Student class is joined with Lecturer class using "has" object property and Student class joined with Sport class with "isPlay" object property. problem I want to get the object property between Student and Lecturer using some SPARQL query. PREFIX rdfs: http://www.w3.org/2000/01/rdf-schema# PREFIX rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns# PREFIX my: http://www.semanticweb.org/ontologies/2010/5/Ontology1275975684120.owl# SELECT ?prop WHERE { ?prop ..........??? } Any Idea..?? Thank in advance!

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• jQuery Rollovers Not Preloading

  - by zuk1

  $('.ro').hover( function(){ t = $(this); t.attr('src',t.attr('src').replace(/([^.]*)\.(.*)/, "$1_o.$2")); }, function(){ t = $(this); t.attr('src',t.attr('src').replace('_o','')); } ); I use this code so that (for examle) test.gif with the class 'ro' would change to test_o.gif on rollover, the problem is when the images aren't in the cache there is lag on rollover and rolloff. Basically if I clear my cache and visit the test page, everytime I rollover and rolloff the image it is loading the file each time, so you could sit there for hours and it would still be loading the rollover images each time. However, when I refresh the page and the images are now in the cache it works instantly, which is what I need to achieve. I've tried using this http://flesler.blogspot.com/2008/01/jquerypreload.html plugin to preload the images with this $.preload('.ro'); code, but it seems to have no effect. Any ideas?

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• jQuery templates - Load another template within a template (composite)

  - by Saxman

  I'm following this post by Dave Ward (http://encosia.com/2010/12/02/jquery-templates-composite-rendering-and-remote-loading/) to load a composite templates for a Blog, where I have a total of 3 small templates (all in one file) for a blog post. In the template file, I have these 3 templates: blogTemplate, where I render the "postTemplate" Inside the "postTemplate", I would like to render another template that displays comments, I called this "commentsTemplate" the "commentsTemplate" Here's the structure of my json data: blog Title Content PostedDate Comments (a collection of comments) CommentContents CommentedBy CommentedDate For now, I was able to render the Post content using the code below: Javascript $(document).ready(function () { $.get('/GetPost', function (data) { $.get('/Content/Templates/_postWithComments.tmpl.htm', function (templates) { $('body').append(templates); $('#blogTemplate').tmpl(data).appendTo('#blogPost'); }); }); }); Templates <!--Blog Container Templates--> <script id="blogTemplate" type="x-jquery-tmpl"> <div class="latestPost"> {{tmpl() '#postTemplate'}} </div> </script> <!--Post Item Container--> <script id="postTemplate" type="x-jquery-tmpl"> <h2> ${Title}</h2> <div class="entryHead"> Posted in <a class="category" rel="#">Design</a> on ${PostedDateString} <a class="comments" rel="#">${NumberOfComments} Comments</a></div> ${Content} <div class="tags"> {{if Tags.length}} <strong>Tags:</strong> {{each(i, tag) Tags}} <a class="tag" href="/blog/tags/{{= tag.Name}}"> {{= tag.Name}}</a> {{/each}} <a class="share" rel="#"><strong>TELL A FRIEND</strong></a> <a class="share twitter" rel="#">Twitter</a> <a class="share facebook" rel="#">Facebook</a> {{/if}} </div> <!-- close .tags --> <!-- end Entry 01 --> {{if Comments.length}} {{each(i, comment) Comments}} {{tmpl() '#commentTemplate'}} {{/each}} {{/if}} <div class="lineHor"> </div> </script> <!--Comment Items Container--> <script id="commentTemplate" type="x-jquery-tmpl"> <h4> Comments</h4> &nbsp; <!-- COMMENT --> <div id="authorComment1"> <div id="gravatar1" class="grid_2"> <!--<img src="images/gravatar.png" alt="" />--> </div> <!-- close #gravatar --> <div id="commentText1"> <span class="replyHead">by<a class="author" rel="#">${= comment.CommentedBy}</a>on today</span> <p> {{= comment.CommentContents}}</p> </div> <!-- close #commentText --> <div id="quote1"> <a class="quote" rel="#"><strong>Quote this Comment</strong></a> </div> <!-- close #quote --> </div> <!-- close #authorComment --> <!-- END COMMENT --> </script> Where I'm having problem is at the {{each(i, comment) Comments}} {{tmpl() '#commentTemplate'}} {{/each}} Update - Example Json data when GetPost method is called { Id: 1, Title: "Test Blog", Content: "This is a test post asdf asdf asdf asdf asdf", PostedDateString: "2010-12-20", - Comments: [ - { Id: 1, PostId: 1, CommentContents: "Test comments # 1, asdf asdf asdf", PostedBy: "User 1", CommentedDate: "2010-12-20" }, - { Id: 2, PostId: 1, CommentContents: "Test comments # 2, ghjk gjjk gjkk", PostedBy: "User 2", CommentedDate: "2010-12-21" } ] } I've tried passing in {{tmpl(comment) ..., {{tmpl(Comments) ..., or leave {{tmpl() ... but none seems to work. I don't know how to iterate over the Comments collection and pass that object into the commentsTemplate. Any suggestions? Thank you very much.

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• Interpretation of Greek characters by FOP

  - by Geek

  Hi, Can you please help me interpret the Greek Characters with HTML display as HTML= & #8062; and Hex value 01F7E Details of these characters can be found on the below URL http://www.isthisthingon.org/unicode/index.php?page=01&subpage=F&hilite=01F7E When I run this character in Apache FOP, they give me an ArrayIndexOut of Bounds Exception Caused by: java.lang.ArrayIndexOutOfBoundsException: -1 at org.apache.fop.text.linebreak.LineBreakUtils.getLineBreakPairProperty(LineBreakUtils.java:668) at org.apache.fop.text.linebreak.LineBreakStatus.nextChar(LineBreakStatus.java:117) When I looked into the FOP Code, I was unable to understand the need for lineBreakProperties[][] Array in LineBreakUtils.java. I also noticed that FOP fails for all the Greek characters mentioned on the above page which are non-displayable with the similar error. What are these special characters ? Why is their no display for these characters are these Line Breaks or TAB’s ? Has anyone solved a similar issue with FOP ?

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• "Invalid signature": oAuth provider with Django-piston

  - by Martin Eve

  Hi, I'm working with django-piston to attempt to create an API that supports oAuth. I started out using the tutorial at: http://blog.carduner.net/2010/01/26/django-piston-and-oauth/ I added a consumer to piston's admin interface with key and secret both set to "abcd" for test purposes. The urls are successfully wired-up and the oAuth provider is called. However, running my get request token tests with tripit (python get_request_token.py "http://127.0.0.1:8000/api" abcd abcd), I receive the following error: Invalid signature. Expected signature base string: GET&http%3A%2F%2F127.0.0.1%3A8000%2Fapi%2Foauth%2Frequest_token%2F&oauth_consumer_key%3Dabcd%26oauth_nonce%3D0c0bdded5b1afb8eddf94f7ccc672658%26oauth_signature_method%3DHMAC-SHA1%26oauth_timestamp%3D1275135410%26oauth_version%3D1.0 The problem seems to lie inside the _check_signature method of Piston's oauth.py, where valid_sig = signature_method.check_signature(oauth_request, consumer, token, signature) is returning false. I can't, however, work out how to get the signature validated. Any ideas? -----Update----- If I remove the test consumer from piston's backend, the response returned is correctly set to "Invalid consumer", so this lookup appears to be working.

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• Jquery fade and swap an element when clicked which will also relate to an accordian menu

  - by Nik

  You will notice when you click posture 1 the description drops down and images appear on the right. Now when you click posture 2 or posture 3 the images and description change as they should. What I need to do now is - If posture 1 has been clicked and then posture 2 is clicked the posture 1 menu needs to close so that there is only one posture description visible at one time. If I could also make it so that if the current open posture item is clicked so that it closes and there are no open posture descriptions that there also no images displayed on the right. Finally is there a way to make sure only one set of animation images is running, because just say the user goes through all 26 options and they continue to run in the background it may get sluggish (thanks to Nick Craver for bringing that up). At this stage only posture 1, 2 and 3 are available. Ok finally some code - //Description drop-down boxes $(document).ready(function(){ //Hide (Collapse) the toggle containers on load $(".toggle_container").hide(); //Switch the "Open" and "Close" state per click $("h5.trigger").toggle(function(){ $(this).addClass("active"); }, function () { $(this).removeClass("active"); }); //Slide up and down on click $("h5.trigger").click(function(){ $(this).next(".toggle_container").slideToggle("slow"); }); }); //Images on the right fade in and out thanks to aSeptik $(document).ready(function(){ $('#section_Q_01,#section_Q_02,#section_Q_03').hide(); $(function() { $('h5.trigger a').click( function(e) { e.preventDefault(); var trigger_id = $(this).parent().attr('id'); //get id Q_## $('.current').removeClass('current').hide(); //add a class for easy access & hide $('#section_' + trigger_id).addClass('current').fadeIn(5000); //show clicked one }); }); }); //Fading pics $(document).ready(function(){ $('.pics').cycle({ fx: 'fade', speed: 2500 }); }); Description boxes - <h5 class="trigger" id="Q_01" ><a href="#">Posture 1 : Standing Deep Breathing :</a></h5> <div class="toggle_container" > <div class="block"> <span class="sc">Pranayama Series</span> <p class="bold">Benefits:</p> </div> </div> <h5 class="trigger" id="Q_02" ><a href="#">Posture 2 : Half Moon Pose With Hands To Feet Pose :</a></h5> <div class="toggle_container"> <div class="block"> <span class="sc">Ardha Chandrasana with Pada-Hastasana</span> <p class="bold">Benefits:</p> </div> </div> <h5 class="trigger" id="Q_03" ><a href="#">Posture 3 : Awkward Pose :</a></h5> <div class="toggle_container"> <div class="block"> <span class="sc">Utkatasana</span> <p class="bold">Benefits:</p> </div> </div> and the images on the right - <div id="section_Q_01" class="01"> <div class="pics"> <img src="../images/multi/poses/pose1/Pranayama._01.jpg"/> <img src="../images/multi/poses/pose1/Pranayama._02.jpg"/> <img src="../images/multi/poses/pose1/Pranayama._03.jpg"/> </div> </div> <div id="section_Q_02" class="02"> <div class="pics"> <img src="../images/multi/poses/pose2/Half_Moon_Pose_04.jpg" /> <img src="../images/multi/poses/pose2/Backward_Bending_05.jpg" /> <img src="../images/multi/poses/pose2/Hands_to_Feet_Pose_06.jpg" /> </div> </div> <div id="section_Q_03" class="03"> <div class="pics"> <img src="../images/multi/poses/pose3/Awkward_01.jpg" /> <img src="../images/multi/poses/pose3/Awkward_02.jpg" /> <img src="../images/multi/poses/pose3/Awkward_03.jpg" /> </div> </div> It would be a bonus if images faded out when another element is clicked... but not a big deal. Thanks for having a look

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