QT 的socket 与 Linux 的socket通信Linux

connect(&client, SIGNAL(error(QAbstractSocket::SocketError)),
this, SLOT(connectError(QAbstractSocket::SocketError)));
connect(&client, SIGNAL(readyRead()),
using namespace std;
Client::Client(QObject *parent) : QObject(parent)
{
connect(&client, SIGNAL(connected()),
this, SLOT(startTransfer()));
{
char error[100] = "connect error!";
cout << error << endl;
}
void Client::startRead()
{
char buffer[100] = {0};
client.read(buffer, client.bytesAvailable());
signal(SIGCHLD, SIG_IGN);
listen(server_sockfd, 5);
while(1) {
char *ch = "string from server";
char buf[13];
printf("server waiting\n");
#include <QtNetwork>
#include <QObject>
#include <QString>
#include <QTcpSocket>
class Client : public QObject
{
Q_OBJECT
public:
Client(QObject* parent = 0);
write(client_sockfd, ch, strlen(ch));
close(client_sockfd);
return 0;
}
else {
close(client_sockfd);
printf("the socket is %d", client_sockfd);
if(fork() == 0) {
read(client_sockfd, buf, sizeof(buf));
printf("client say:%s", buf);
~Client();
void start(QString address, quint16 port);
public slots:
void startTransfer();
void startRead();
void connectError(QAbstractSocket::SocketError);
client_len = sizeof(client_address);
client_sockfd = accept(server_sockfd,
(struct sockaddr* )&client_address, (socklen_t *)&client_len);
client.connectToHost(addr, port);
}
void Client::startTransfer()
{
client.write("Hello world!", 13);
}
void Client::connectError(QAbstractSocket::SocketError)
#include <sys/socket.h>
#include <stdio.h>
#include <netinet/in.h>
#include <string.h>
#include <arpa/inet.h>
#include <sys/time.h>
#include <signal.h>
//int result;
server_sockfd = socket(AF_INET, SOCK_STREAM, 0);
server_address.sin_family = AF_INET;
server_address.sin_addr.s_addr = inet_addr("127.0.0.1");
cout << "server say:" << buffer << endl;
client.close();
}
//main.cpp
#include "client.h"
#includ main(int argc, char *argv[])
QT 的socket 与 Linux 的socket通信Linux
程序设计 2010-05-06 22:42:09 阅读81 评论1 字号：大中小
其实这两者间的通信跟Linux的socket间通信没什么区别。
客户端：
//client.h
#ifndef CLIENT_H
#define CLIENT_H
server_address.sin_port = htons(8888);
server_len = sizeof(server_address);
bind(server_sockfd, (struct sockaddr *)&server_address, server_len);
private:
QTcpSocket client;
};
#endif // CLIENT_H
// client.cpp
#include "client.h"
#include <QHostAddress>
#include <string>
#include <iostream>
{
QApplication app(argc, argv);
Client client;
client.start("127.0.0.1", 8888);
return app.exec();
}
服务器端：
//main.cpp
#include <sys/types.h>
this, SLOT(startRead()));
}
Client::~Client()
{
client.close();
}
void Client::start(QString address, quint16 port)
{
QHostAddress addr(address);
#include <unistd.h>
int main(void)
{
int server_sockfd, client_sockfd;
int server_len, client_len;
struct sockaddr_in server_address;
struct sockaddr_in client_address;
}
}
}