[英]Socket Connection between PHP and C++
我在PHP頁面和C ++代碼之間創建了一個TCP Socket連接。 這是用於此的c ++代碼。
Server.cpp
#include <iostream>
#include <fstream>
#include <sstream>
#include <string>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/stat.h>
#include <fcntl.h>
using namespace std;
int main(){
int create_socket,new_socket,fd;
int n;
socklen_t addrlen;
struct sockaddr_in address;
if ((create_socket = socket(AF_INET,SOCK_STREAM,0)) > 0)
cout<<"The socket was created\n";
address.sin_family = AF_INET;
address.sin_addr.s_addr = INADDR_ANY;//INADDR_ANY;inet_addr("localhost");
address.sin_port = htons(4000);
cout<<"\nworking";
if (bind(create_socket,(struct sockaddr *)&address,sizeof(address)) == 0)
cout<<"Binding Socket\n";
while(1){
listen(create_socket,3);
addrlen = sizeof(struct sockaddr_in);
cout<<"*************************\n";
new_socket = accept(create_socket,(struct sockaddr *)&address,&addrlen);
cout<<"*************************\n";
char dobj[1024];
if (new_socket > 0){
n = read(new_socket, dobj, 1023);
string query(dobj);
string strl(query);
string s, d;
istringstream iss(strl);
iss >> s;
iss >> d;
const char* source = s.c_str();
const char* dest = d.c_str();
printf("Here is the message: %s %s\n",source,dest);
n = write(new_socket, "I got your message", 18);
}
}
close(new_socket);
return close(create_socket);
}
而PHP代碼是index.php
<?php
if (isset($_GET['submit'])){
$query = $_GET['query'];
echo $query;
error_reporting(E_ALL);
$service_port = 4000;
$address = "localhost";
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if ($socket === false){
echo "Failed: ". socket_strerror(socket_last_error($socket))."\n";
}
echo "Attempting to connect to '$address' on port '$service_port'...'\n";
$result = socket_connect($socket, $address, $service_port);
if ($result === false){
echo "Failed: ". socket_strerror(socket_last_error($socket))."\n";
}
$in = $query;
$out = '';
echo "Sending...\n";
socket_send($socket, $in, strlen($in), MSG_WAITALL);
echo "OK.\n";
echo "Reading response:\n\n";
while ($out = socket_read($socket, 2048)) {
echo $out;
}
socket_close($socket);
}
?>
<html>
<head>
</head>
<body>
<form action="index.php" method="get">
Query: <input type="text" name="query">
<button type="submit" name="submit">Submit!</button>
</form>
</body>
</html>
我在終端上運行Server.cpp並在瀏覽器上運行index.php。當我在瀏覽器上運行index.php並輸入一個查詢“123456 7890”時,服務器在終端上輸出消息123456 7890。
但服務器無法將“我收到您的消息”消息發送回瀏覽器上的index.php。 只有當我按Ctrl + C退出服務器時,它才會將消息發送到index.php,然后index.php才會回顯瀏覽器上的所有內容。 這里有什么問題? 我想在Server.cpp中監聽socket並無限地向index.php發送消息。
我看起來你沒有將你的套接字配置為非阻塞(帶有O_NONBLOCK標志的fcntl),所以read操作, read(new_socket, dobj, 1023);
將阻塞,直到它收到1023個字節。
您可以將套接字配置為非阻塞或一次讀取更少的字節。 但最好的解決方案是第一個。
有關此問題的完整解決方案的更多詳細信息,請在此處查看我的答案
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