How to IPC between PHP clients and a C Daemon Server?

Question

and thanks for taking a look at the question.

The background
I have several machines that continuously spawn multiple (up to 300) PHP console sc

Answer 1

nanomsg is coded in plain C so I guess it is better suited for your needs than Thrift and ZeroMQ that are coded in C++.

It has wrappers for many languages including PHP.

Here is a working example using the NN_PAIR protocol: (you can use NN_REQREP too)

client.php

connect('ipc:///tmp/myserver.ipc');

$sock->send('Hello World!', 0);

$sock->setOption(NanoMsg::NN_SOL_SOCKET, NanoMsg::NN_RCVTIMEO, 1000);

$data = $sock->recv(0, 0);

echo "received: " . $data . "\n";

?>

server.c

#include 
#include 
#include 
#include 

#define address "ipc:///tmp/myserver.ipc"

int main() {
  unsigned char *buf = NULL;
  int result;
  int sock = nn_socket(AF_SP, NN_PAIR);
  if (sock < 0) puts("nn_socket failed");

  if (nn_bind(sock, address) < 0) puts("bind failed");

  while ((result = nn_recv(sock, &buf, NN_MSG, 0)) > 0) {
    int i, size = strlen(buf) + 1;  // includes null terminator
    printf("RECEIVED \"%s\"\n", buf);
    for (i = 0; buf[i] != 0; i++)
      buf[i] = toupper(buf[i]);
    nn_send(sock, buf, size, 0);
    nn_freemsg(buf);
  }
  nn_shutdown(sock, 0);
  return result;
}