winsock微信讲解（2）

前两天写了篇文章：winsock微信然后我怕有人不懂，出个教程吧，这样出了问题你们也能自己解决

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今天讲用户端（出两篇教程，骗流量卷）第一篇请看winsock微信讲解（1）

#define _WINSOCK_DEPRECATED_NO_WARNINGS
#include<WinSock2.h>
#include<bits/stdc++.h>
#pragma comment(lib,"ws2_32.lib")
using namespace std;
int main() {
	WSADATA data;
	int ret = WSAStartup(MAKEWORD(2, 2), &data);//初始化
	if (ret) {
		cout << "初始化网络错误！" << endl;
		WSACleanup();
		return -1;
	}
	SOCKET sock = socket(AF_INET, SOCK_STREAM, 0);//建套接字
	char a[100];
	cout<<"你要连接的ip:";
	cin>>a;
	cout<<endl;
	sockaddr_in addr;
	addr.sin_family = AF_INET;
	addr.sin_port = htons(80);
	addr.sin_addr.S_un.S_addr = inet_addr(a);
	ret = connect(sock, (sockaddr*)&addr, sizeof(addr));//绑定ip、端口，连接服务器 
	if (ret == -1) {
		WSACleanup();
		cout << "连接服务器失败" << endl;
		return -1;
	}
	char buf[0xFFF]; 
	while(1){
		ret=recv(sock,buf,sizeof(buf),0);//接收
		if (ret <= 0) {
			WSACleanup();
			cout << "接收服务器数据失败" << endl;
			return -1;
		}
		cout << "服务器：" << buf << endl<<"我：";
		cin>>buf;
		ret=send(sock,buf,0xFFF,0);//发送
		if (ret <= 0)
			cout << "发送服务器数据失败" << endl;
	}
	WSACleanup();
}

这一个简单多了，前面的不会请看教程一。

其他的都没问题，重点讲一下

1.

char a[100];
cout<<"你要连接的ip:";
cin>>a;
cout<<endl;
sockaddr_in addr;
addr.sin_family = AF_INET;
addr.sin_port = htons(80);
addr.sin_addr.S_un.S_addr = inet_addr(a);
ret = connect(sock, (sockaddr*)&addr, sizeof(addr));//绑定ip、端口，连接服务器 

这一个一定是服务端的ip，不是你的，但连接后服务器端也能知道你ip。端口要和服务器开的端口一模一样。

2.

ret = connect(sock, (sockaddr*)&addr, sizeof(addr));//绑定ip、端口，连接服务器 

connect参数：

1.套接字

2.前面代码绑定的服务器ip、端口

3.服务器ip、端口的长度

#define _WINSOCK_DEPRECATED_NO_WARNINGS
#include<WinSock2.h>
#pragma comment(lib,"ws2_32")
#include<bits/stdc++.h>
//注释我不写了，结合前面代码理解 
using namespace std;
int main() {
	WSADATA data;
	int ret=WSAStartup(MAKEWORD(2,2),&data);
	if (ret) {
		cout << "初始化网络错误！" << endl;
		WSACleanup();
		return -1;
	}
	SOCKET sock=socket(AF_INET,SOCK_STREAM,0);
	if (sock == -1) {
		cout << "创建套接字失败";
		WSACleanup();
		return -1;
	}
	int b;
	cout<<"1.创建房间  2.加入房间\n";
	cin>>b;
	cout<<endl;
	if(b==1){
		char a[100];
		cout<<"你的ip:";
		cin>>a;
		cout<<endl;
		sockaddr_in addr;
		addr.sin_family = AF_INET;
		addr.sin_port = htons(80);
		addr.sin_addr.S_un.S_addr = inet_addr(a);
		ret=bind(sock,(sockaddr*)&addr, sizeof(addr));
		if (ret == -1) {
			cout << "绑定地址端口失败";
			WSACleanup();
			return -1;
		}
		ret=listen(sock,5);
		if (ret == -1) {
			cout << "监听套接字失败";
			WSACleanup();
			return -1;
		}
		sockaddr addrCli;
		int len = sizeof(addrCli);
		SOCKET sockCli=accept(sock,&addrCli,&len);
		if (sockCli == -1) {
			cout << "接收客户端连接失败";
			WSACleanup();
			return -1;
		}
		char buf[0xFFF];
		cout<<"我：";
		while(1){
			cin>>buf;
			ret=send(sockCli, buf, strlen(buf),0);
			if (ret == -1) {
				cout << "发送信息失败";
				WSACleanup();
				return -1;
			}
			ret=recv(sockCli,buf,0xFFF,0);
			if (ret <= 0) {
				cout << "接受客户端数据失败";
				WSACleanup();
				return -1;
			}
			cout<<"客户："<<buf<<endl<<"我：";
		}
	}
	else{
		char a[100];
		cout<<"你要连接的ip:";
		cin>>a;
		cout<<endl;
		sockaddr_in addr;
		addr.sin_family = AF_INET;
		addr.sin_port = htons(80);
		addr.sin_addr.S_un.S_addr = inet_addr(a);
		ret = connect(sock, (sockaddr*)&addr, sizeof(addr));
		if (ret == -1) {
			WSACleanup();
			cout << "连接服务器失败" << endl;
			return -1;
		}
		char buf[0xFFF]; 
		while(1){
			ret=recv(sock,buf,sizeof(buf),0);
			if (ret <= 0) {
				WSACleanup();
				cout << "接收服务器数据失败" << endl;
				return -1;
			}
			cout << "服务器：" << buf << endl<<"我：";
			cin>>buf;
			ret=send(sock,buf,0xFFF,0);
			if (ret <= 0)
				cout << "发送服务器数据失败" << endl;
		}
	}
}

这个你们自己理解吧，通过前面的教程自己看看