基于C语言的聊天工具

服务器的代码:
#include "WinSock2.h"
#include <iostream>
using namespace std;
#pragma comment(lib, "wsock32.lib")
SOCKET NewConnection;
int j=1;
DWORD WINAPI ThreadProc(LPVOID lpParam)
{
char buf[1024];
int recvbytes;
while(j)
{
if((recvbytes=recv(NewConnection, buf, 1024, 0)) != -1)
{
buf[recvbytes] = '\0';
printf("Received: %s \n",buf);
if(strcmp(buf,"bye")==0)
{
j=0;
}
}
}
return 0;
}
int main()
{
WSADATA wsaData;
SOCKET ListeningSocket;
SOCKADDR_IN ServerAddr;
SOCKADDR_IN ClientAddr;
int Port = 5150;
WSAStartup(MAKEWORD(2,2), &wsaData); // 初始化Windows Socket 2.2
//创建一个新的Socket来响应客户端的连接请求；
//AF_INET字段是表示网络地址的类型，AF_INET表示是internet域中进行通信；
//SOCK_STREAM表示socket的类型，SOCK_STREAM表示是流套接字IPPROTO_TCP表明协议类型,
//IPPROTO_TCP或者0表示TCP/IP协议
ListeningSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
ServerAddr.sin_family = AF_INET; // 填写服务器地址信息
ServerAddr.sin_port = htons(Port); // 端口为5150
//INADDR_ANY表示机器上的所用网络地址; 比如你的机器上有两张网卡，
//那么到达这两张网卡的数据，你的socket都可以得到通知；htonl将IP地址转换为网络格式
ServerAddr.sin_addr.s_addr = htonl(INADDR_ANY);
//绑定监听端口;当调用socket函数创建套接字后，
//该套接字并没有与本机地址和端口等信息相连，bind函数将完成这些工作
bind(ListeningSocket, (SOCKADDR *)&ServerAddr, sizeof(ServerAddr));
listen(ListeningSocket, 2); // 开始监听，指定最大同时连接数为2
int len = sizeof(ClientAddr);
NewConnection = accept(ListeningSocket, (SOCKADDR *) &ClientAddr, &len);// 接受新的连接
cout << "************************************************" << endl;
cout << "****new client has been connected******" << endl;
cout << "*************************************************" << endl;
HANDLE hThread;
DWORD dwThreadId;
hThread = ::CreateThread(NULL,NULL,ThreadProc,NULL,0,&dwThreadId);
if(hThread!=NULL)
{
char buf[1024];
while(j)
{
cin >> buf;
if(send(NewConnection,buf,sizeof(buf),0) == -1)
perror("send出错!\n");
else
printf("成功!\n");
if(strcmp(buf,"bye")==0) j=0;
}
::CloseHandle(hThread);
}
//if(send(NewConnection, "Hello, you are connected!\n", 26, 0) == -1)
// {
// perror("send出错！");
// }
/* 当连接建立之后，我们就可以在这里和client进行通信，传输数据了*/
closesocket(NewConnection); //关闭连接
closesocket(ListeningSocket); //并关闭监听Socket
WSACleanup(); // 释放Windows Socket DLL的相关资源
system("pause");
return 0;
}
客户端的代码:
#include "WinSock2.h"
#include <windows.h>
#pragma comment(lib, "wsock32.lib")
#include <iostream>
using namespace std;
int j=1;
SOCKET s;
DWORD WINAPI ThreadProc(LPVOID lpParam)
{
char buf[1024];
int recvbytes;
while(j)
{
if((recvbytes=recv(s, buf, 1024, 0)) != -1)
{
if(strcmp(buf,"bye")==0)
{
j=0;
}
buf[recvbytes] = '\0';
printf("Received: %s \n",buf);
}
}
return 0;
}
int main()
{
WSADATA wsaData;
SOCKADDR_IN ServerAddr;
int Port = 5120;
WSAStartup(MAKEWORD(2,2), &wsaData); //初始化Windows Socket 2.2
s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); // 创建一个新的Socket来连接服务器
ServerAddr.sin_family = AF_INET;
ServerAddr.sin_port = htons(Port);
ServerAddr.sin_addr.s_addr = inet_addr("172.16.103.230"); //在程序中我与本机进行通信
int result = connect(s, (SOCKADDR *) &ServerAddr, sizeof(ServerAddr)); // 向服务器发出连接请求
if(result == SOCKET_ERROR)
printf("哈哈");
HANDLE hThread;
DWORD dwThreadId;
if(result == 0)
{
//result==0表示连接成功
cout << "Client has connected to server!" << endl;
hThread = ::CreateThread(NULL,NULL,ThreadProc,NULL,0,&dwThreadId); char buf[1024];
while(j)
{
cin >> buf;
if(send(s,buf,sizeof(buf),0) == -1)
perror("send出错!\n");
else
printf("成功!\n");
if(strcmp(buf,"bye")==0) j=0;
}
}
if(hThread != NULL)
{
::CloseHandle(hThread);
}
closesocket(s);
WSACleanup();
system("pause");
return 0;
}。