tcpserver开启多线程处理

本例子是《C++socket网络编程大全实战http服务器视频课程》的学习笔记。
服务端开辟线程处理对应的客户端消息，用到了c++11中的thread库。

main.cpp

#include <string.h>
#include <stdlib.h>
#ifdef WIN32//Windows环境下编译
#include <Windows.h>
#else//linux环境下编译
#include <sys/types.h> 
#include <sys/socket.h>
#include <unistd.h>
#include <arpa/inet.h>
#define closesocket close //linux中使用close函数
#endif
#include <thread>
using namespace std;
class TcpThread
{
    
public:
	void Main()
	{
    
		char buf[1024] = {
     0 };
		for (;;)
		{
    
			int recvlen = recv(client, buf, sizeof(buf) - 1, 0);
			if (recvlen <= 0) break;
			buf[recvlen] = '\0';
			if (strstr(buf, "quit") != NULL) {
    
				char re[] = "quit success!\n";
				send(client, re, strlen(re) + 1, 0);//strlen获取的字符串大小不包括\0
				break;
			}
			send(client, "ok\n", 4, 0);
			printf("recv %s\n", buf);
		}
		closesocket(client);
		delete this;
	}
	int client = 0;
};
#include <stdio.h>
int main(int argc, char *argv[])
{
    
#ifdef WIN32
	WSADATA ws;	//初始化动态链接库
	WSAStartup(MAKEWORD(2,2), &ws);//主版本为2，副版本为2
#endif
	int sock = socket(AF_INET, SOCK_STREAM, 0);//TCP 
	if (sock == -1) {
    
		printf("create socket failed!\n");
		return -1;
	}
	unsigned short port = 8080;
	if (argc > 1) {
    
		port = atoi(argv[1]);//把字符串转换成整型数
	}
	sockaddr_in saddr;
	saddr.sin_family = AF_INET;
	saddr.sin_port = htons(port);//注意字节序转换
	saddr.sin_addr.s_addr = htonl(0);

	if (bind(sock, (sockaddr*)&saddr, sizeof(saddr)) != 0) {
    
		printf("bind port %d failed!\n", port);
		return -2;
	}
	printf("bind port %d success!\n", port);
	listen(sock, 10);

	for (;;)
	{
    
		sockaddr_in caddr;
		socklen_t len = sizeof(caddr);
		int client = accept(sock, (sockaddr*)&caddr, &len);
		if (client <= 0) break;
		printf("accept client %d\n", client);
		char *ip = inet_ntoa(caddr.sin_addr);
		unsigned short cport = ntohs(caddr.sin_port);
		printf("client ip is %s,port is %d\n", ip, cport);
		TcpThread *th = new TcpThread();
		th->client = client;
		thread sth(&TcpThread::Main, th);
		sth.detach();
	}
	closesocket(sock);
	getchar();
	return 0;
}

Makefile

tcpserver:main.cpp
	g++ main.cpp -o tcpserver -std=c++11 -lpthread

测试