Example of c++ client and node.js server - c++

Question

I have a problem... I'm trying to connect my client written in c++ to my server written in nodejs but I couldn't do. How can i receive data in the server? With this code I receive the client connection but not the data that it sends. I will appreciate a simple example to send and receive data from a c++ client and nodejs server.
This is my client.cpp
#include <stdio.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <string.h>
#define PORT 8080
int main(int argc, char const *argv[])
{
int sock = 0, valread;
struct sockaddr_in serv_addr;
char *hello = "Hello from client";
char buffer[1024] = {0};
if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0)
{
printf("\n Socket creation error \n");
return -1;
}
serv_addr.sin_family = AF_INET;
serv_addr.sin_port = htons(PORT);
// Convert IPv4 and IPv6 addresses from text to binary form
if(inet_pton(AF_INET, "127.0.0.1", &serv_addr.sin_addr)<=0)
{
printf("\nInvalid address/ Address not supported \n");
return -1;
}
if (connect(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0)
{
printf("\nConnection Failed \n");
return -1;
}
send(sock , hello , strlen(hello) , 0 );
printf("Hello message sent\n");
//valread = read( sock , buffer, 1024);
//printf("%s\n",buffer );
return 0;
}
This is my server.js
const server = require('http').createServer();
const io = require('socket.io')(server, {
path: '/test',
serveClient: false,
// below are engine.IO options
pingInterval: 10000,
pingTimeout: 5000,
cookie: false
});
server.on('connection', function (client) {
console.log("New connection");
});
server.on('data', function (client) {
console.log("New data");
});
server.on('close', () => {
console.log('Subscriber disconnected.');
});
server.listen(8080);

Answer 1

Your client program terminates faster than the server has time to read the data (the socket is closed before the system has time to send the output buffer). Put a 'sleep' (or any other waiting concept) before you exit and look what happens.
p.s. what is the return value of your 'send'?