libuv udp

rxs_network.c

#include <stdio.h>
#include "rxs_network.h"

int rxs_network_init(rxs_network* net, const char* ip, int port) {
  int r;
  struct sockaddr_in addr;

  if (!net) { return -1; } 

  /* get default loop */
  net->loop = uv_default_loop();
  if (!net->loop) {
    printf("Error: cannot get default loop in networking.\n");
    return -2;
  }

  /* init sock */
  r = uv_udp_init(net->loop, &net->send_sock);
  if (r != 0) {
    printf("Error: cannot initialize uv_udp_t in networking.\n");
    return -3;
  }

  /* create ip4 addr */
  r = uv_ip4_addr(ip, port, &addr);
  if (r != 0) {
    printf("Error: cannot create addr struct for networking: %s\n", uv_strerror(r));
    return -4;
  } 

  /* bind udp sender */
  r = uv_udp_bind(&net->send_sock, (const struct sockaddr*)&addr, 0);
  if (r != 0) {
    printf("Error: cannot bind udp: %s\n", uv_strerror(r));
    return -5;
  }

  return 0;
}

rxs_network.h

#ifndef RXS_NETWORK_H
#define RXS_NETWORK_H

#include <uv.h>

typedef struct rxs_network rxs_network;

struct rxs_network {
  uv_udp_t send_sock;
  uv_loop_t* loop;
};

int rxs_network_init(rxs_network* net, const char* ip, int port);

#endif