windows下用gcc编译socket程序

参考

程序参考 Visual Studio 2019 C++实现socket通信，添加ws2_32.lib库，新手代码

我这做了微调

编译

编译 gcc client.c -lwsock32 -o client，追加 -lwsock32

client.c

#include <stdio.h>
#include <WinSock2.h>

#pragma comment(lib,"ws2_32.lib")

int main(int argv, char* argc[])
{
	//初始化
	WSADATA wsaData;
	WSAStartup(MAKEWORD(2, 2), &wsaData);

	//创建套接字
	SOCKET clntSock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);

	//向服务器发送消息
	struct sockaddr_in sockAddr;
	memset(&sockAddr, 0, sizeof(sockAddr));			//每个字节都用0填充
	sockAddr.sin_family = PF_INET;
	sockAddr.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");
	sockAddr.sin_port = htons(8888);
	connect(clntSock, (SOCKADDR*)& sockAddr, sizeof(SOCKADDR));
	
	//接收服务器消息
	char szBuffer[1024] = { 0 };
	recv(clntSock, szBuffer, 1024, 0);

	//输出接收到的数据
    printf("服务端：%s\n", szBuffer);

	//向服务端发送消息
	const char* str = "hello server";
	send(clntSock, str, strlen(str) + sizeof(char), 0);
	
	//关闭套接字
	closesocket(clntSock);

	//终止dll
	WSACleanup();

	system("pause");

	return 0;
}

server.c

#include <stdio.h>
#include <WinSock2.h>
#pragma comment(lib,"ws2_32.lib")		//加载ws2_32.dll

int main(int argv, char* argc[])
{
	//初始化
	WSADATA wsaData;
	WSAStartup(MAKEWORD(2, 2), &wsaData);

	//创建套接字
	SOCKET servSock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);

	//绑定套接字
	struct sockaddr_in sockAddr;
	memset(&sockAddr, 0, sizeof(sockAddr));		//每个字节用0填充
	sockAddr.sin_family = PF_INET;				//使用ipv4
	sockAddr.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");
	sockAddr.sin_port = htons(8888);			//端口
	bind(servSock, (SOCKADDR*)&sockAddr, sizeof(SOCKADDR));

	//进入监听状态
	listen(servSock, 20);

	//接收客户端消息
	SOCKADDR clntAddr;
	int nSize = sizeof(SOCKADDR);
	SOCKET clntSock = accept(servSock, (SOCKADDR*)&clntAddr, &nSize);


	//向客户端发送消息
	const char* str = "hello client";
	send(clntSock, str, strlen(str) + sizeof(char), 0);

	char szBuffer[1024] = { 0 };
	recv(clntSock, szBuffer, 1024, 0);
	printf("客户端：%s\n", szBuffer);
	//关闭套接字
	closesocket(clntSock);
	closesocket(servSock);

	//终止dll使用
	WSACleanup();

	system("pause");
	return 0;

}