用socket进行本机进程间通讯

服务器代码：
#include < winsock2.h >
#include < iostream >
#include < windows.h >
using namespace std;
// extern "C"{

int main( int argc, char ** argv){
    int clientlen;
    struct sockaddr_in clientaddr;
    struct hostent * hp;
    char * haddrp;
    char chInfo[ 64 ];
    WSADATA wsaData;
   
    int ret = WSAStartup(MAKEWORD( 2 , 2 ), & wsaData);
    if (ret != 0 ){
        cout << " Error " << endl;
        WSACleanup();
    }

    if (gethostname(chInfo, sizeof (chInfo)))
        cout << " \n无法获取主机!\n " ;
    cout << chInfo << endl;

    SOCKET serverSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (serverSocket == INVALID_SOCKET){
        MessageBox(NULL, " 创建套接字失败! " , " Warning " , MB_ICONEXCLAMATION);
        closesocket(serverSocket);
        WSACleanup();
    }

    sockaddr_in localaddr;
    localaddr.sin_addr.s_addr = htonl(INADDR_ANY);
    localaddr.sin_family = AF_INET;
    localaddr.sin_port = htons( 6000 );
    if (bind(serverSocket, ( const struct sockaddr * ) & localaddr, sizeof (localaddr)) == SOCKET_ERROR){
        MessageBox( 0 , " 绑定地址失败! " , " Warning " , MB_ICONEXCLAMATION);
        closesocket( serverSocket);
        WSACleanup();
    }

    listen(serverSocket, 5 );

    while ( true )
    {
        clientlen = sizeof (clientaddr);
        SOCKET connfd = accept(serverSocket, ( struct sockaddr * ) & clientaddr, & clientlen);
        hp = gethostbyaddr(( const char * ) & clientaddr.sin_addr.S_un, sizeof (clientaddr.sin_addr.S_un), AF_INET);
        haddrp = inet_ntoa(clientaddr.sin_addr);
        cout << " server connected to " << hp -> h_name << " ( " << haddrp << " ) " << endl;

        int length;
        // char buffer[5];
        // if ((length = recv(connfd, buffer, 5, 0)) == SOCKET_ERROR)
        char buffer[ 10240 ];
        if ((length = recv(connfd, buffer, 10240 , 0 )) == SOCKET_ERROR)
            MessageBox( 0 , " 接收失败! " , " Warning " , MB_ICONEXCLAMATION);
        for ( int i = 0 ;i < length;i ++ )
            cout << buffer[i];
        cout << endl;

        closesocket(connfd);
    }
    closesocket( serverSocket);
    WSACleanup();
   
    return 0 ;
}

 

客户端代码：

C/C++ code

     

      
       #include 
      <
      winsock2.h
      >
       #include 
      <
      iostream
      >
       #include 
      <
      windows.h
      >
       #include 
      <
      memory.h
      >
       
      using
       
      namespace
       std; 
      int
       main(){ 
      struct
       hostent 
      *
      hp; 
      struct
       in_addr addr; 
      struct
       sockaddr_in serverAddr; WSADATA wsaData; 
      int
       ret 
      =
       WSAStartup(MAKEWORD(
      2
      ,
      2
      ), 
      &
      wsaData); 
      if
      (ret 
      !=
       
      0
      ){ cout 
      <<
       
      "
      Error
      "
       
      <<
       endl; WSACleanup(); } SOCKET clientfd 
      =
       socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); 
      if
       (clientfd 
      ==
       INVALID_SOCKET) { MessageBox(
      0
      ,
      "
      创建套接字失败!
      "
      ,
      "
      Warning
      "
      , MB_ICONEXCLAMATION); closesocket(clientfd); WSACleanup(); } addr.s_addr 
      =
       inet_addr(
      "
      192.168.168.135
      "
      ); hp 
      =
       gethostbyaddr((
      const
       
      char
       
      *
      )
      &
      addr,
      sizeof
      (addr),AF_INET); memset(
      &
      serverAddr,
      '
      \0
      '
      ,
      sizeof
      (
      struct
       sockaddr_in)); memcpy((
      char
      *
      )
      &
      serverAddr.sin_addr,(
      char
       
      *
      )hp
      ->
      h_addr_list[
      0
      ],hp
      ->
      h_length); 
      //
      OK
       
       serverAddr.sin_family 
      =
       hp
      ->
      h_addrtype; serverAddr.sin_port 
      =
       htons(
      6000
      ); 
      if
      (connect(clientfd, (
      struct
       sockaddr 
      *
      )
      &
      serverAddr, 
      sizeof
      (serverAddr))
      <
      0
      ) cout
      <<
      "
      error
      "
      <<
      endl; 
      int
       length; 
      char
       buffer[
      5
      ]; 
      for
      (
      int
       i
      =
      0
      ;i
      <
      5
      ;i
      ++
      ) buffer[i]
      =
      '
      a
      '
      ; 
      if
       ((length 
      =
       send(clientfd, buffer, 
      5
      , 
      0
      )) 
      ==
       SOCKET_ERROR) MessageBox(
      0
      ,
      "
      发送失败!
      "
      ,
      "
      Warning
      "
      , MB_ICONEXCLAMATION); 
      return
       
      0
      ; }