Editing OBject EXchange (section)

===OpenObex===
OpenObex is an open-source implementation of OBEX in [[C programming language|C]]. It provides functions for connecting over [[IrDA]], [[Bluetooth]], [[USB]] and [[TCP/IP]], building objects and handling received data. An example schema of a client application is:

<syntaxhighlight lang="cpp">
void callback_function(...) {
  /* process received data */
}

int main() {
  OBEX_Init(..., callback_function);
  OBEX_TransportConnect(...);

  object = OBEX_ObjectNew(...);
  OBEX_ObjectAddHeader(object, ...);
  OBEX_ObjectAddHeader(object, ...);
  OBEX_Request(..., object);
  while (...)
    OBEX_HandleInput(...)

  object = OBEX_ObjectNew(...);
  OBEX_ObjectAddHeader(object, ...);
  OBEX_Request(..., object);
  while (...)
    OBEX_HandleInput(...)

  /* ... */

  OBEX_TransportDisconnect(handle);
  OBEX_Cleanup(handle);
}
</syntaxhighlight>

Objects are sent by <code>OBEX_Request</code>. After calling <code>OBEX_HandleInput</code>, received data is processed in the callback function (which was specified when calling <code>OBEX_Init</code>). The callback function can determine whether the response has been completely received, and therefore whether the main program can exit from the <code>while</code> loop it is executing.