Function socket_send

lib/lua/src/usocket.c:209–240

#define SEND_RETRY_COUNT 5
T_ERRCODE socket_send(
  p_socket sock, const char *data, size_t len, int timeout) {
  int err, put = 0;
  if (*sock < 0) {
    return CLOSED;
  }
  for(int i = 0; i < SEND_RETRY_COUNT; i++) {
    do {
      size_t l = len - put;
      put = send(*sock, data + put, l, 0);
      if (put > 0) {
        if(put == l) {
          return SUCCESS;
        }
        // Not all data was delivered, we need to try again.
        err = EAGAIN;
        break;
      }
    } while ((err = errno) == EINTR);

    if (err == EAGAIN) {
      err = socket_wait(sock, WAIT_MODE_W, timeout);
      // Check if the socket is available again and try to resend.
      if(err == SUCCESS) {
        continue;
      }
    }
    break;
  }

  return err;
}

T_ERRCODE socket_recv(
  p_socket sock, char *data, size_t len, int timeout, int *received) {