TCP Server端：

#include

#include

#include

#include

#include

#include

#define  SRVPORT      10005

#define  CONNECT_NUM  5

#define  MAX_NUM      80

using namespace std;

int main( int argc, char* argv[] )

{

int aSock = -1, srcSock = -1;

int nSrvAddr = -1,  cnt = -1;

sockaddr_in  sa, serverSockAddr;

sockaddr srvSockAddr;

memset( &srvSockAddr, 0, sizeof(srvSockAddr) );

aSock = socket( AF_INET, SOCK_STREAM, 0 );

if( aSock < 0 )

{

cout<<"Create srcSock Error!"<

return 0;

}

memset( &serverSockAddr, 0, sizeof(serverSockAddr) );

memset( &sa, 0, sizeof(sa) );

sa.sin_family = AF_INET;

sa.sin_port   = htons((u_short)SRVPORT);

sa.sin_addr.s_addr = htonl( INADDR_ANY );

if( bind( aSock, (sockaddr*) &sa, sizeof(sa) ) < 0 )

{

cout<<"Bind Error!"<

return 0;

}

if( listen(aSock, CONNECT_NUM) < 0 )

{

cout<<"Listen Error!"<

return 0;

}

cout<<"Server has been opened:"<

while( true )

{

cnt = -1;

nSrvAddr = sizeof( sockaddr_in );

srcSock = accept( aSock, (sockaddr*)&serverSockAddr, (socklen_t *) &nSrvAddr );

if( srcSock < 0 )

{

cout<<" Server accept Error@"<

cout<<"srcSock is: "<

cout<<" Error No is : "<

perror("server:");

return  0;

}

char szRevMeg[ MAX_NUM ] = { 0 };

char szSdMeg[ MAX_NUM ] = { "Hello World!" };

cout<<"Begin to read: "<

cnt = read( srcSock, szRevMeg, MAX_NUM );

if( cnt < 0 )

{

cout<<"Read Error!"<

return 0; //Just to test

}

cout<<" cnt is: "<

cout<<"Complete Read:"<

cout<

cnt = write( srcSock, szSdMeg, strlen(szSdMeg)+1 );

if( cnt < 0 )

{

cout<<"Write Error!"<

}

cout<<"Write Completed!"<

close( srcSock );

cout<

}

close( aSock );

return 0;

}

TCP Client 端：

#include

#include

#include

#include

#include

#include

#define  PORT    10005

#define  SRVIP   "127.0.0.1" // "222.26.209.141"

#define  RCVNUM  1024

using namespace std;

int main()

{

int clientSock, nRecvBytes = -1;

sockaddr_in  sa;

char Buffer[RCVNUM] = { 0 };

clientSock = socket( AF_INET, SOCK_STREAM, 0 );

if( clientSock < 0 )

{

cout<<"Client Socket create error!"<

return 0;

}

memset( &sa, 0, sizeof(sa) );

sa.sin_family = AF_INET;

sa.sin_port   = htons( PORT );

sa.sin_addr.s_addr = inet_addr( SRVIP );

if( connect( clientSock, (sockaddr*)&sa, sizeof(sockaddr) ) < 0 )

{

cout<<"Connect Error!"<

return 0;

}

cout<<" Client has been opened:"<

strcpy( Buffer, "Here client said:  hello" );

cout<<" Begin to write: "<

write( clientSock, Buffer, strlen(Buffer)+1 );

cout<<" Write completed"<

memset( Buffer, 0, sizeof(Buffer) );

if( nRecvBytes = read( clientSock,Buffer, RCVNUM ) < 0 )

{

cout<<"Read Message Error!"<

return 0;

}

cout<<"Server says: "<

close( clientSock );

cout<<"End of file"<

return 0;

}
 

【编辑推荐】

1. Linux下的Memcache安装
2. linux大扫盲：linux之Tar命令常用参数
3. linux定时器的使用