VC++ TCP/IP 服务/客户程序源代码

//TCP//服务器端程序#include< stdio.h >#include< stdlib.h >#include< windows.h >#include< winsock.h >#include< string.h >#pragma comment( lib, "ws2_32.lib" )#define PORT 2046#define BACKLOG 10#define TRUE 1void main( void ){int iServerSock;int iClientSock;char *buf = "hello, world!\n";struct sockaddr_in ServerAddr;struct sockaddr_in ClientAddr;int sin_size;WSADATA WSAData;if( WSAStartup( MAKEWORD( 1, 1 ), &WSAData ) )//初始化{printf( "initializationing error!\n" );WSACleanup( );exit( 0 );}if( ( iServerSock = socket( AF_INET, SOCK_STREAM, 0 ) ) == INVALID_SOCKET ){printf( "创建套接字失败!\n" );WSACleanup( );exit( 0 );}ServerAddr.sin_family = AF_INET;ServerAddr.sin_port = htons( PORT );//监视的端口号ServerAddr.sin_addr.s_addr = INADDR_ANY;//本地IPmemset( & ( ServerAddr.sin_zero ), 0, sizeof( ServerAddr.sin_zero ) );if( bind( iServerSock, ( struct sockaddr * )&ServerAddr, sizeof( struct sockaddr ) ) == -1 ){printf( "bind调用失败!\n" );WSACleanup( );exit( 0 );}if( listen( iServerSock, BACKLOG ) == -1 ){printf( "listen调用失败!\n" );WSACleanup( );exit( 0 );}while( TRUE ){sin_size = sizeof( struct sockaddr_in );iClientSock = accept( iServerSock, ( struct sockaddr * )&ClientAddr, &sin_size );if( iClientSock == -1 ){printf( "accept调用失败!\n" );WSACleanup( );exit( 0 );}printf( "服务器连接到%s\n", inet_ntoa( ClientAddr.sin_addr ) );if( send( iClientSock, buf, strlen( buf ), 0 ) == -1 ){printf( "send调用失败!" );closesocket( iClientSock );WSACleanup( );exit( 0 );}}}/////客户端程序#include< stdio.h >#include< stdlib.h >#include< windows.h >#include< winsock.h >#include< string.h >#pragma comment( lib, "ws2_32.lib" )#define PORT 2046#define BACKLOG 10#define TRUE 1#define MAXDATASIZE 100void main( void ){int iClientSock;char buf[ MAXDATASIZE ];struct sockaddr_in ServerAddr;int numbytes;// struct hostent *he;WSADATA WSAData;// int sin_size;/* if( ( he = gethostbyname( "liuys" ) ) == NULL ){printf( "gethostbyname调用失败!" );WSACleanup( );exit( 0 );}*/if( WSAStartup( MAKEWORD( 1, 1 ), &WSAData ) )//初始化{printf( "initializationing error!\n" );WSACleanup( );exit( 0 );}if( ( iClientSock = socket( AF_INET, SOCK_STREAM, 0 ) ) == INVALID_SOCKET ){printf( "创建套接字失败!\n" );WSACleanup( );exit( 0 );}ServerAddr.sin_family = AF_INET;ServerAddr.sin_port = htons( PORT );// ServerAddr.sin_addr = *( ( struct in_addr * )he->h_addr );ServerAddr.sin_addr.s_addr = inet_addr( "192.168.2.194" );//记得换IPmemset( &( ServerAddr.sin_zero ), 0, sizeof( ServerAddr.sin_zero ) );if( connect( iClientSock, ( struct sockaddr * ) & ServerAddr, sizeof( struct sockaddr ) ) == -1 ){printf( "connect失败!" );WSACleanup( );exit( 0 );}numbytes = recv( iClientSock, buf, MAXDATASIZE, 0 );if( numbytes == -1 ){printf( "recv失败!" );WSACleanup( );exit( 0 );}buf[ numbytes ] = '\0';printf( "Received: %s", buf );closesocket( iClientSock );WSACleanup( );}/////UDP//服务器#include< stdio.h >#include< string.h >#include< winsock.h >#include< windows.h >#pragma comment( lib, "ws2_32.lib" )#define PORT 2046#define BACKLOG 10#define TRUE 1#define MAXDATASIZE 1000void main( void ){int iServerSock;// int iClientSock;int addr_len;int numbytes;char buf[ MAXDATASIZE ];struct sockaddr_in ServerAddr;struct sockaddr_in ClientAddr;WSADATA WSAData;if( WSAStartup( MAKEWORD( 1, 1 ), &WSAData ) ){printf( "initializationing error!\n" );WSACleanup( );exit( 0 );}iServerSock = socket( AF_INET, SOCK_DGRAM, 0 );if( iServerSock == INVALID_SOCKET ){printf( "创建套接字失败!\n" );WSACleanup( );exit( 0 );}ServerAddr.sin_family = AF_INET;ServerAddr.sin_port = htons( PORT );//监视的端口号ServerAddr.sin_addr.s_addr = INADDR_ANY;//本地IPmemset( & ( ServerAddr.sin_zero ), 0, sizeof( ServerAddr.sin_zero ) );if( bind( iServerSock, ( struct sockaddr * )&ServerAddr, sizeof( struct sockaddr ) ) == -1 ){printf( "bind调用失败!\n" );WSACleanup( );exit( 0 );}addr_len = sizeof( struct sockaddr );numbytes = recvfrom( iServerSock, buf, MAXDATASIZE, 0, ( struct sockaddr * ) & ClientAddr, &addr_len );if( numbytes == -1 ){printf( "recvfrom调用失败!\n" );WSACleanup( );exit( 0 );}printf( "got packet from %s\n", inet_ntoa( ClientAddr.sin_addr ) );printf( "packet is %d bytes long\n", numbytes );buf[ numbytes ] = '\0';printf( "packet contains \"%s\"\n", buf );closesocket( iServerSock );WSACleanup( );}//客户端#include< stdio.h >#include< stdlib.h >#include< windows.h >#include< winsock.h >#include< string.h >#pragma comment( lib, "ws2_32.lib" )#define PORT 2046#define MAXDATASIZE 100void main( void ){int iClientSock;struct sockaddr_in ServerAddr;int numbytes;char buf[ MAXDATASIZE ] = { 0 };WSADATA WSAData;if( WSAStartup( MAKEWORD( 1, 1 ), &WSAData ) ){printf( "initializationing error!\n" );WSACleanup( );exit( 0 );}if( ( iClientSock = socket( AF_INET, SOCK_DGRAM, 0 ) ) == -1 ){printf( "创建套接字失败!\n" );WSACleanup( );exit( 0 );}ServerAddr.sin_family = AF_INET;ServerAddr.sin_port = htons( PORT );ServerAddr.sin_addr.s_addr = inet_addr( "192.168.2.194" );//记得换IPmemset( &( ServerAddr.sin_zero ), 0, sizeof( ServerAddr.sin_zero ) );numbytes = sendto( iClientSock, buf, strlen( buf ), 0, ( struct sockaddr * ) & ServerAddr, sizeof( struct sockaddr ) );if( numbytes == -1 ){printf( "sendto调用失败!\n" );WSACleanup( );exit( 0 );}printf( "sent %d bytes to %s\n", numbytes, inet_ntoa( ServerAddr.sin_addr ) );closesocket( iClientSock );WSACleanup( );} 

转载自: http://space.itpub.net/13771794/viewspace-580550