client.c

《基于Symbian OS的手机开发与应用实践》这本书的配套源码。

#if defined(WIN32)
#include "StdAfx.h"
#include <winsock2.h>
#else
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#endif

void main(int argc,char *argv[])
{
    int sock;
    int bufsize = 1024;
    char *buffer = malloc(bufsize);
    struct sockaddr_in address;
    int err=0;

#if defined(WIN32)
    WORD wVersionRequested;
    WSADATA wsaData;

    printf("Starting\n");
    wVersionRequested = MAKEWORD( 2, 2 );
    err = WSAStartup( wVersionRequested, &wsaData );
    if ( err != 0 ) 
    {
        printf("Startup error %d\n", err);
        return;
    }

    if ( LOBYTE( wsaData.wVersion ) != 2 ||
       HIBYTE( wsaData.wVersion ) != 2 ) 
    {
        printf("WinSock version is wrong.\n");
        return; 
    }
   
#endif

    
    printf("Creating socket\n");
    sock = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
    if (sock<=0)
    {
        printf("Fail to create socket, error %d\n", sock);
        return;
    }

    printf("Connecting\n");
    address.sin_family = AF_INET;
    address.sin_port = htons(8000);
    address.sin_addr.s_addr = inet_addr(argv[1]);
    err = connect(sock,(struct sockaddr *)&address,sizeof(address));
    if ( err != 0)
    {
        printf("Fail to connect, error %d\n", err);
        return;
    }
    printf("The connection was accepted with the server %s...\n",inet_ntoa(address.sin_addr));

    do{
        recv(sock,buffer,bufsize,0);
        printf("Message recieved: %s\n",buffer);
        if (strcmp(buffer,"/q"))
        {
            printf("Message to send: ");
            gets(buffer);
            send(sock,buffer,bufsize,0);
        }
    }while (strcmp(buffer,"/q"));
    close(sock);

#if defined(WIN32)
    WSACleanup();
#endif
}