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POhow to query a http request from a vc++ project
 

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  1. POhow to query a http request from a vc++ project
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    <p>I am writing a sample program to get a file from some site. but it is replying me file not found errors,i dont know how to make an http header. anyone help me in writing http headers.</p> <p>AND i am trying to print the ip in this way(printf("%s\n",ptr->ai_addr->sa_data);) but not getting it how to print ip address??,am i doing it right??</p> <p>my code is:-</p> <pre><code>#define WIN32_LEAN_AND_MEAN #include &lt;windows.h&gt; #include &lt;winsock2.h&gt; #include &lt;ws2tcpip.h&gt; #include &lt;stdlib.h&gt; #include &lt;stdio.h&gt; #define WIN32_LEAN_AND_MEAN #include &lt;windows.h&gt; #include &lt;winsock2.h&gt; #include &lt;ws2tcpip.h&gt; #include &lt;stdlib.h&gt; #include &lt;stdio.h&gt; // Need to link with Ws2_32.lib, Mswsock.lib, and Advapi32.lib #pragma comment (lib, "Ws2_32.lib") #pragma comment (lib, "Mswsock.lib") #pragma comment (lib, "AdvApi32.lib") #define DEFAULT_BUFLEN 512 #define DEFAULT_PORT "80" int __cdecl main(int argc, char **argv) { WSADATA wsaData; SOCKET ConnectSocket = INVALID_SOCKET; struct addrinfo *result = NULL, *ptr = NULL, hints; char *sendbuf = "GET / HTTP/1.1[CRLF] Host: www.espncricinfo.com[CRLF]Connection: close[CRLF]User-Agent: Web-sniffer/1.0.37 (+http://web-sniffer.net/)[CRLF]Accept-Encoding: gzip[CRLF]Accept-Charset: ISO-8859-1,UTF-8;q=0.7,*;q=0.7[CRLF]Cache-Control: no-cache[CRLF]Accept-Language: de,en;q=0.7,en-us;q=0.3 \r\n"; char buff[DEFAULT_BUFLEN],recvbuf[512]; int iResult; int recvbuflen = DEFAULT_BUFLEN; // Validate the parameters if (argc != 1) { printf("usage: %s server-name\n", argv[0]); return 1; } // Initialize Winsock iResult = WSAStartup(MAKEWORD(2,2), &amp;wsaData); if (iResult != 0) { printf("WSAStartup failed with error: %d\n", iResult); return 1; } ZeroMemory( &amp;hints, sizeof(hints) ); hints.ai_family = AF_INET; hints.ai_socktype = SOCK_STREAM; hints.ai_protocol = IPPROTO_TCP; // Resolve the server address and port iResult = getaddrinfo("122.169.255.9",DEFAULT_PORT, &amp;hints, &amp;result); if ( iResult != 0 ) { printf("getaddrinfo failed with error: %d\n", iResult); WSACleanup(); return 1; } // Attempt to connect to an address until one succeeds for(ptr=result; ptr != NULL ;ptr=ptr-&gt;ai_next) { // Create a SOCKET for connecting to server ConnectSocket = socket(ptr-&gt;ai_family, ptr-&gt;ai_socktype, ptr-&gt;ai_protocol); printf("inside loop %s ",ptr-&gt;ai_addr-&gt;sa_data); if (ConnectSocket == INVALID_SOCKET) { printf("socket failed with error: %ld\n", WSAGetLastError()); WSACleanup(); return 1; } // Connect to server. iResult = connect(ConnectSocket, ptr-&gt;ai_addr, (int)ptr-&gt;ai_addrlen); printf("%d\n",ptr-&gt;ai_addrlen); // printf("%s\n",ptr-&gt;ai_addr-&gt;sa_family); printf("%s\n",ptr-&gt;ai_addr-&gt;sa_data); if (iResult == SOCKET_ERROR) { printf("socket error\n"); printf("failed with error: %d\n", WSAGetLastError()); closesocket(ConnectSocket); ConnectSocket = INVALID_SOCKET; continue; } break; } freeaddrinfo(result); if (ConnectSocket == INVALID_SOCKET) { printf("Unable to connect to server!\n"); WSACleanup(); return 1; } // Send an initial buffer char filepath[]="pakistan/content/current/story/517271.html"; sprintf(buff,"GET %s\r\n",filepath); iResult = send( ConnectSocket,buff, (int)strlen(buff), 0 ); if (iResult == SOCKET_ERROR) { printf("send failed with error: %d\n", WSAGetLastError()); closesocket(ConnectSocket); WSACleanup(); return 1; } printf("Bytes Sent: %ld\n", iResult); // shutdown the connection since no more data will be sent iResult = shutdown(ConnectSocket, SD_SEND); if (iResult == SOCKET_ERROR) { printf("shutdown failed with error: %d\n", WSAGetLastError()); closesocket(ConnectSocket); WSACleanup(); return 1; } do { iResult = recv(ConnectSocket, recvbuf, recvbuflen, 0); //if ( iResult &gt; 0 ) printf("Bytes received: %d\n", iResult); if ( iResult &gt; 0 ) { printf("Bytes received: %d\n", iResult); printf("%s",recvbuf); } else if ( iResult == 0 ) printf("Connection closed\n"); else printf("recv failed with error: %d\n", WSAGetLastError()); } while( iResult&gt;0 ); // cleanup closesocket(ConnectSocket); WSACleanup(); return 0; } </code></pre>
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