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POC C++ - TCP Socket Class : Receive Problem
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  1. POC C++ - TCP Socket Class : Receive Problem
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    copied!<p>I did my own Socket class, to be able to send and receive HTTP requests. But I still got some problems. The following code (my receive function) is still buggy, and crashing sometimes. I tried debugging it, but it must be somewhere in the pointer arithmetics / memory management.</p> <pre><code>int Socket::Recv(char *&amp;vpszRecvd) { //vpszRecvd = NULL; int recvsize = 0; char TempBuf[1024]; int Result = 0; char* temp; do { memset(TempBuf, 0, sizeof(TempBuf)); Result = recv( this-&gt;sSocket, TempBuf, sizeof(TempBuf) -1, 0 ); if (recvsize == 0) recvsize = Result; if ( Result &gt; 0 ) { if ( vpszRecvd != NULL ) { if (temp == NULL) { temp = (char*)calloc(recvsize + 1, sizeof(char)); } else { realloc(temp, recvsize + 1); } if (temp == NULL) return 0; memcpy(temp, vpszRecvd, recvsize); realloc(vpszRecvd, recvsize + Result); if (vpszRecvd == NULL) return 0; memset(vpszRecvd, 0, recvsize + Result); memcpy(vpszRecvd, TempBuf, Result); memcpy(vpszRecvd + recvsize, TempBuf, Result); recvsize += Result; } else { realloc(vpszRecvd, Result); if (vpszRecvd == NULL) return 0; memset(vpszRecvd, 0, Result); memcpy(vpszRecvd, TempBuf, Result); recvsize += Result; } } else if ( Result == 0 ) { return recvsize; } else //if ( Result == SOCKET_ERROR ) { closesocket(this-&gt;sSocket); this-&gt;sSocket = INVALID_SOCKET; return SOCKET_ERROR; } } while( Result &gt; 0 ); return recvsize; } </code></pre> <p>Does anybody see anything that could cause the crash, or does anyone have a better / faster / smaller and stable example how to receive a full packet via recv()?</p> <p>I can't use strings, it must be done with chars, though.</p> <p>Thanks for your help.</p>
 

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