- //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 1
- void 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IP
- memset( & ( 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 100
- void 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IP
- memset( &( 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 1000
- void 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IP
- memset( & ( 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 100
- void 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IP
- memset( &( 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