dyad

Server example

A simple server which listens on port 8000 and echoes whatever is sent to it:

#include <stdlib.h>
#include "dyad.h"

static void onData(dyad_Event *e) {
  dyad_write(e->stream, e->data, e->size);
}

static void onAccept(dyad_Event *e) {
  dyad_addListener(e->remote, DYAD_EVENT_DATA, onData, NULL);
  dyad_writef(e->remote, "Echo server\r\n");
}

int main(void) {
  dyad_init();

  dyad_Stream *serv = dyad_newStream();
  dyad_addListener(serv, DYAD_EVENT_ACCEPT, onAccept, NULL);
  dyad_listen(serv, 8000);

  while (dyad_getStreamCount() > 0) {
    dyad_update();
  }

  dyad_shutdown();
  return 0;
}

Client example

A simple example program which connects to a daytime server and prints the response:

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

static void onConnect(dyad_Event *e) {
  printf("connected: %s\n", e->msg);
}

static void onData(dyad_Event *e) {
  printf("%s", e->data);
}

int main(void) {
  dyad_init();

  dyad_Stream *s = dyad_newStream();
  dyad_addListener(s, DYAD_EVENT_CONNECT, onConnect, NULL);
  dyad_addListener(s, DYAD_EVENT_DATA,    onData,    NULL);
  dyad_connect(s, "time-nw.nist.gov", 13);

  while (dyad_getStreamCount() > 0) {
    dyad_update();
  }
  
  dyad_shutdown();
  return 0;
}