Qt实现Winsock网络编程-Tcp服务端和客户端通信（多线程）示例demo

#include "widget.h" #include "ui_widget.h" Widget::Widget(QWidget *parent) : QWidget(parent), ui(new Ui::Widget) { ui->setupUi(this); //winsock 初始化 WSAStartup(MAKEWORD(2,2),&mWasData); } Widget::~Widget() { ::closesocket(mListen); WSACleanup(); delete ui; } //启动服务器 void Widget::on_pushButton_clicked() { if(INVALID_SOCKET != mListen) return; //端口校验 QString str = ui->lineEdit->text(); QRegExp reg("[0-9]{1,5}");//0到65535 QRegExpValidator validator(reg,this); int pos = 0; if( QValidator::Acceptable != validator.validate(str,pos)){ ui->label_2->setText("启动失败！！！"); ui->label_2->setStyleSheet("color:red;"); return; } int port = str.toInt(); if( port < 0 || port > 65535){ ui->label_2->setText("启动失败！！！"); ui->label_2->setStyleSheet("color:red;"); return; } //创建套接字，正确返回有效的套接字 mListen = socket(PF_INET,SOCK_STREAM,IPPROTO_TCP); int error; if(mListen == INVALID_SOCKET){ error = WSAGetLastError(); qDebug() << "socket error:" << error; return; } sockaddr_in addr; addr.sin_family = PF_INET; addr.sin_port = htons((u_short)port); addr.sin_addr.S_un.S_addr = INADDR_ANY;//服务端可以这样写，主机的任意合适的地址 //绑定套接字和地址信息 int ret = bind(mListen,(sockaddr*)&addr,sizeof(addr)); if( ret == SOCKET_ERROR){ error = WSAGetLastError(); qDebug() << "bind error:" << error; return; } //端口监听 ret = ::listen(mListen,SOMAXCONN); if( ret == SOCKET_ERROR){ error = WSAGetLastError(); qDebug() << "listen error:" << error; return; } ui->label_2->setText("启动成功"); ui->label_2->setStyleSheet("color:orange;"); //启动后台进程和客户端进行连接，必须这样，因为ui线程不能被阻塞！ mSocketThread = new SocketThread(mListen); mSocketThread->start(); //信号槽连接 connect(mSocketThread,&SocketThread::isMsg,[=](QString msg){ ui->listWidget->addItem(msg); }); } void Widget::closeEvent(QCloseEvent *event){ if(mSocketThread != nullptr){ mSocketThread->requestInterruption(); mSocketThread->terminate(); qDebug() << "释放 mSocketThread"; mSocketThread->quit(); mSocketThread->wait(); delete mSocketThread; } } void Widget::on_pushButton_2_clicked() { ui->listWidget->clear(); }