libcli/echo/libecho.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Echo structures and headers, example async client library
   5
   6    Copyright (C) 2010 Kai Blin  <kai@samba.org>
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #ifndef __LIBECHO_H__
  23 #define __LIBECHO_H__
  24
  25 /* The echo port is fixed, so just set a constant. */
  26 #define ECHO_PORT 7
  27
  28 /** Send an echo request to an echo server
  29  *
  30  *@param mem_ctx        talloc memory context to use
  31  *@param ev             tevent context to use
  32  *@param server_address address of the server as a string
  33  *@param message        echo message to send
  34  *@return tevent_req with the active request or NULL on out-of-memory
  35  */
  36 struct tevent_req *echo_request_send(TALLOC_CTX *mem_ctx,
  37                                      struct tevent_context *ev,
  38                                      const char *server_address,
  39                                      const char *message);
  40
  41 /** Get the echo response from an echo server
  42  *
  43  * Once the echo_request_send async request is finished, you can call
  44  * this function to collect the echo reply.
  45  *
  46  *@param req      tevent_req struct returned from echo_request_send
  47  *@param mem_ctx  talloc memory context to use for the reply string
  48  *@param message  pointer to a string that will be allocated and filled with
  49                   the echo reply.
  50  *@return NTSTATUS code depending on the async request result
  51  */
  52 NTSTATUS echo_request_recv(struct tevent_req *req,
  53                            TALLOC_CTX *mem_ctx,
  54                            char **message);
  55
  56 #endif /*__LIBECHO_H__*/