Winsock实验相关的问题
小弟最近在做Winsock网络实验的，要求能够实现不同主机的相互通信；参考网上经验后在电脑上写好了程序，使用客户端指定IP地址时用127.0.0.1可以实现一台电脑的相互通信，但我用两台电脑时总是链接不上，望求教
客户端代码：
#include<WINSOCK2.H>
#include<STDIO.H>
#include<iostream>
#include<cstring>
using namespace std;
#pragma comment(lib, "ws2_32.lib")
int main()
{
WORD sockVersion = MAKEWORD(2, 2);
WSADATA data;
if(WSAStartup(sockVersion, &data)!=0)
{
return 0;
}
while(true){
SOCKET sclient = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if(sclient == INVALID_SOCKET)
{
printf("invalid socket!");
return 0;
}
sockaddr_in serAddr;
serAddr.sin_family = AF_INET;
serAddr.sin_port = htons(8888);
serAddr.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");
if(connect(sclient, (sockaddr *)&serAddr, sizeof(serAddr)) == SOCKET_ERROR)
{ //连接失败
printf("connect error !");
closesocket(sclient);
return 0;
}
string data;
cin>>data;
const char * sendData;
sendData = data.c_str(); //string转const char*
//char * sendData = "消息已发送\n";
send(sclient, sendData, strlen(sendData), 0);
//send()用来将数据由指定的socket传给对方主机
//int send(int s, const void * msg, int len, unsigned int flags)
//s为已建立好连接的socket，msg指向数据内容，len则为数据长度，参数flags一般设0，成功则返回实际传送出去的字符数，失败返回-1，错误原因存于error
char recData[255];
int ret = recv(sclient, recData, 255, 0);
if(ret>0){
recData[ret] = 0x00;
printf(recData);
}
closesocket(sclient);
}
WSACleanup();
return 0;
}
服务器代码：
#include <stdio.h>
#include <winsock2.h>
#pragma comment(lib,"ws2_32.lib")
int main(int argc, char* argv[])
{
//初始化WSA
WORD sockVersion = MAKEWORD(2,2);
WSADATA wsaData;
if(WSAStartup(sockVersion, &wsaData)!=0)
return 0;
//创建套接字
SOCKET slisten = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if(slisten == INVALID_SOCKET)
{
printf("socket error !");
return 0;
}
//绑定IP和端口
sockaddr_in sin;
sin.sin_family = AF_INET;
sin.sin_port = htons(8888);
sin.sin_addr.S_un.S_addr = INADDR_ANY;
if(bind(slisten, (LPSOCKADDR)&sin, sizeof(sin)) == SOCKET_ERROR)
{
printf("bind error !");
}
//开始监听
if(listen(slisten, 5) == SOCKET_ERROR)
{
printf("listen error !");
return 0;
}
//循环接收数据
SOCKET sClient;
sockaddr_in remoteAddr;
int nAddrlen = sizeof(remoteAddr);
char revData[255];
while (true)
{
printf("\n等待连接...\n");
sClient = accept(slisten, (SOCKADDR *)&remoteAddr, &nAddrlen);
if(sClient == INVALID_SOCKET)
{
printf("accept error !");
continue;
}
printf("接受到一个连接：%s \r\n", inet_ntoa(remoteAddr.sin_addr));
//接收数据
int ret = recv(sClient, revData, 255, 0);
if(ret > 0)
{
revData[ret] = 0x00;
printf(revData);
}
//发送数据
const char * sendData = "消息已发送！\n";
send(sClient, sendData, strlen(sendData), 0);
closesocket(sClient);
}
closesocket(slisten);
WSACleanup();
return 0;
}
本机运算时成功发送消息的截图
这是本台电脑的IP查询结果，在另一台电脑的客户端代码将IP和端口改为192.168.1.8和139后依然显示connect error
小弟初学网络编程，望高手不吝赐教
