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echo_client.cpp
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100 lines (96 loc) · 2.47 KB
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/**
* ==================================================
* @file concurrent_echo_server.cpp
* @brief 回显客户端
* @author ywj
* @date 2025-06-16 下午4:17
* @version 1.0
* @copyright Copyright (c) 2025 ywj. All Rights Reserved.
* ==================================================
*/
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <memory>
#include <cstring>
#include <string>
#include <iostream>
void err_quit(const char *msg)
{
perror(msg);
exit(1);
}
int main(int argc, char **argv)
{
// 参数传入ip和端口
if (argc < 3)
{
err_quit("param too less!");
}
const char *servIp = argv[1];
const char *servPortS = argv[2];
short servPort = -1;
servPort = atoi(servPortS);
if (servPort < 0)
{
err_quit("port is incorrect!");
}
printf("connect to server %s:%d\n", servIp, servPort);
// 定义套接字
int sockFd;
// 定义server地址结构体
sockaddr_in servAddr;
// 清空地址结构体
memset(&servAddr, 0, sizeof(servAddr));
// 给地址结构体复制
servAddr.sin_family = AF_INET; // IPV4地址族
servAddr.sin_port = htons(servPort); // 端口号转换为网络字节序
inet_aton(servIp, &servAddr.sin_addr);
if (servAddr.sin_addr.s_addr == INADDR_NONE)
{
err_quit("invalid ip!");
}
// 创建套接字
sockFd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (sockFd < 0)
{
err_quit("create socket error!");
}
// 建立连接
if (connect(sockFd, (sockaddr *)&servAddr, sizeof(servAddr)) < 0)
{
err_quit("connnect error!");
}
// 连接成功之后等待输入
char recvBuf[1024];
for (;;)
{
printf("please input data to send:");
// 等待输入
std::string sendData;
std::getline(std::cin, sendData);
if (sendData == "quit")
{
close(sockFd);
printf("success close connect,see you next time!");
return 0;
}
// 发送
// send(sockFd,sendData.c_str(),sendData.length());
if (write(sockFd, sendData.c_str(), sendData.length()) <= 0)
{
close(sockFd);
err_quit("send error!");
}
// 等待响应
while (read(sockFd, recvBuf, 1024) > 0)
{
printf("recvData:%s\n", recvBuf);
break;
}
}
return 0;
}