求索阁

server.cpp
#include
#include
#pragma comment(lib, "ws2_32.lib")
void main() {
// 初始化
WSADATA wsaData;
int iResult = WSAStartup( MAKEWORD(2,2), &wsaData );
if ( iResult != NO_ERROR )
printf("Error at WSAStartup()\n");
// 建立socket
SOCKET server;
server = socket( AF_INET, SOCK_STREAM, IPPROTO_TCP );
if ( server == INVALID_SOCKET ) {
printf( "Error at socket(): %ld\n", WSAGetLastError() );
WSACleanup();
return;
}
// 绑定socket
sockaddr_in service;
service.sin_family = AF_INET;
service.sin_addr.s_addr = inet_addr( "127.0.0.1" );
service.sin_port = htons( 27015 );
if ( bind( server, (SOCKADDR*) &service, sizeof(service) ) == SOCKET_ERROR ) {
printf( "bind() failed.\n" );
closesocket(server);
return;
}
// 监听 socket
if ( listen( server, 1 ) == SOCKET_ERROR )
printf( "Error listening on socket.\n");
// 接受连接
SOCKET AcceptSocket;
printf( "Waiting for a client to connect...\n" );
while (1) {
AcceptSocket = SOCKET_ERROR;
while ( AcceptSocket == SOCKET_ERROR ) {
AcceptSocket = accept( server, NULL, NULL );
}
printf( "Client Connected.\n");
server = AcceptSocket;
break;
}
// 发送接受数据
int bytesSent;
int bytesRecv = SOCKET_ERROR;
char sendbuf[32] = "Server: Sending Data.";
char recvbuf[32] = "";
bytesRecv = recv( server, recvbuf, 32, 0 );
printf( "Bytes Recv: %ld\n", bytesRecv );
bytesSent = send( server, sendbuf, strlen(sendbuf), 0 );
printf( "Bytes Sent: %ld\n", bytesSent );
return;
}

closesocket （SOCKET server);

client.cpp
#include
#include
#pragma comment(lib, "ws2_32.lib")
void main() {
// 初始化 Winsock.
WSADATA wsaData;
int iResult = WSAStartup( MAKEWORD(2,2), &wsaData );
if ( iResult != NO_ERROR )
printf("Error at WSAStartup()\n");
// 建立socket socket.
SOCKET client;
client = socket( AF_INET, SOCK_STREAM, IPPROTO_TCP );
if ( client == INVALID_SOCKET ) {
printf( "Error at socket(): %ld\n", WSAGetLastError() );
WSACleanup();
return;
}
// 连接到服务器.
sockaddr_in clientService;
clientService.sin_family = AF_INET;
clientService.sin_addr.s_addr = inet_addr( "127.0.0.1" );
clientService.sin_port = htons( 27015 );
if ( connect( client, (SOCKADDR*) &clientService, sizeof(clientService) ) == SOCKET_ERROR) {
printf( "Failed to connect.\n" );
WSACleanup();
return;
}
// 发送并接收数据.
int bytesSent;
int bytesRecv = SOCKET_ERROR;
char sendbuf[32] = "Client: Sending data.";
char recvbuf[32] = "";
bytesSent = send( client, sendbuf, strlen(sendbuf), 0 );
printf( "Bytes Sent: %ld\n", bytesSent );
while( bytesRecv == SOCKET_ERROR ) {
bytesRecv = recv( client, recvbuf, 32, 0 );
if ( bytesRecv == 0 || bytesRecv == WSAECONNRESET ) {
printf( "Connection Closed.\n");
break;
}
if (bytesRecv < 0)
return;
printf( "Bytes Recv: %ld\n", bytesRecv );
}
return;
}

closesocket (SOCKET server);