获取套接字功能的连接超时。
我对网络很陌生,我正在尝试打开套接字并从服务器获取文件。
我收到连接超时错误100060。
我的代码是:-
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#include <stdlib.h>
#include <stdio.h>
// 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 \"27015\"
int __cdecl main(int argc, char **argv)
{
WSADATA wsaData;
SOCKET ConnectSocket = INVALID_SOCKET;
struct addrinfo *result = NULL,
*ptr = NULL,
hints;
char *sendbuf = \"this is a test\";
char recvbuf[DEFAULT_BUFLEN];
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), &wsaData);
if (iResult != 0) {
printf(\"WSAStartup failed with error: %d\\n\", iResult);
return 1;
}
ZeroMemory( &hints, sizeof(hints) );
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
// Resolve the server address and port
iResult = getaddrinfo(\"74.125.236.83\", DEFAULT_PORT, &hints, &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->ai_next) {
// Create a SOCKET for connecting to server
ConnectSocket = socket(ptr->ai_family, ptr->ai_socktype,
ptr->ai_protocol);
printf(\"inside loop\\n\");
if (ConnectSocket == INVALID_SOCKET) {
printf(\"socket failed with error: %ld\\n\", WSAGetLastError());
WSACleanup();
return 1;
}
// Connect to server.
iResult = connect( ConnectSocket, ptr->ai_addr, (int)ptr->ai_addrlen);
printf(\"%d\\n\",ptr->ai_addrlen);
if (iResult == SOCKET_ERROR) {
printf(\"socket error\\n\");
printf(\"shutdown 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
iResult = send( ConnectSocket, sendbuf, (int)strlen(sendbuf), 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;
}
// Receive until the peer closes the connection
do {
iResult = recv(ConnectSocket, recvbuf, recvbuflen, 0);
if ( iResult > 0 )
printf(\"Bytes received: %d\\n\", iResult);
else if ( iResult == 0 )
printf(\"Connection closed\\n\");
else
printf(\"recv failed with error: %d\\n\", WSAGetLastError());
} while( iResult > 0 );
// cleanup
closesocket(ConnectSocket);
WSACleanup();
return 0;
}
没有找到相关结果
已邀请:
2 个回复
师埠女
锯康
您正在将
初始化为
。但是ѭ4never永远不会设置为值!= NULL,因此循环立即退出。 从您的代码中,在我看来您的意思是: