Question

看过孙鑫C++视频的进来下

服务器
#include <Winsock2.h>
#include <stdio.h>
void main()
{
WORD wVersionRequested;
WSADATA wsaData;
int err;

wVersionRequested = MAKEWORD( 1, 1 );

err = WSAStartup( wVersionRequested, &wsaData );
if ( err != 0 ) {

return;
}

if ( LOBYTE( wsaData.wVersion ) != 1 ||
HIBYTE( wsaData.wVersion ) != 1 ) {

WSACleanup( );
return;
}

SOCKET sockSrv=socket(AF_INET,SOCK_STREAM,0);
SOCKADDR_IN addrSrv;
addrSrv.sin_addr.S_un.S_addr=INADDR_ANY;
addrSrv.sin_family=AF_INET;
addrSrv.sin_port=htons(6000);
bind(sockSrv,(SOCKADDR*)&addrSrv,sizeof(sockSrv));
listen(sockSrv,5);
SOCKADDR_IN addrclient;
int len=sizeof(SOCKADDR);

while(1)
{
SOCKET sockConn=accept(sockSrv,(SOCKADDR*)&addrclient,&len);
char sendBuf[100];
sprintf(sendBuf,"Welcome %s to http://www.sunxin.org",inet_ntoa(addrSrv.sin_addr));
send(sockConn,sendBuf,strlen(sendBuf)+1,0);
char recvBuf[100];
recv(sockConn,recvBuf,100,0);
printf("%s\n",recvBuf);
closesocket(sockConn);

}

}
客户端
#include <Winsock2.h>
#include <stdio.h>
void main()
{
WORD wVersionRequested;
WSADATA wsaData;
int err;

wVersionRequested = MAKEWORD( 1, 1 );

err = WSAStartup( wVersionRequested, &wsaData );
if ( err != 0 ) {

return;
}

if ( LOBYTE( wsaData.wVersion ) != 1 ||
HIBYTE( wsaData.wVersion ) != 1 ) {

WSACleanup( );
return;
}
SOCKET sockClient=socket(AF_INET,SOCK_STREAM,0);
SOCKADDR_IN addrSrv;
addrSrv.sin_addr.S_un.S_addr=inet_addr("127.0.0.1");
addrSrv.sin_family=AF_INET;
addrSrv.sin_port=htons(6000);
connect(sockClient,(SOCKADDR*)&addrSrv,sizeof(sockClient));
char recvBuf[100];
recv(sockClient,recvBuf,100,0);
printf("%s\n",recvBuf);
send(sockClient,"this is ooo",strlen("this is ooo")+1,0);
closesocket(sockClient);
WSACleanup();

}
为什么运行后是如图

Answer 1

问题出在了connect(sockClient,(SOCKADDR*)&addrSrv,sizeof(sockClient));
把sizeof()里面改为sizeof(SOCKADDR);

当然 服务器里面的也要改

Answer 2

大哥，给你条建议 sprintf(sendBuf,"Welcome %s to http://www.sunxin.org",inet_ntoa(addrSrv.sin_addr));
inet_ntoa(addrSrv.sin_addr有没有值呀？？？
我也不是很懂的！我也刚刚看呀