A new RPC pipe! The \pipe\echo named pipe is for testing large RPC

requests and responses and is only compiled in when --enable-developer
is passed to configure.  It includes server and client side code for
generating and responding to functions on this pipe.  The functions are:

 - AddOne: add one to the uint32 argument and return ig
 - EchoData: echo back a variable sized char array to the caller
 - SourceData: request a variable sized char array
 - SinkData: send a variable sized char array and throw it away

There's a win32 implementation of the client and server in the
junkcode CVS repository in the rpcecho-win32 subdirectory.

source/include/rpc_echo.h

@@ -0,0 +1,74 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   Samba rpcecho definitions.
+
+   Copyright (C) Tim Potter 2003
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful, 
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifndef _RPC_ECHO_H
+#define _RPC_ECHO_H
+
+#define ECHO_ADD_ONE          0x00
+#define ECHO_DATA             0x01
+#define ECHO_SINK_DATA        0x02
+#define ECHO_SOURCE_DATA      0x03
+
+typedef struct echo_q_add_one
+{
+	uint32 request;
+} ECHO_Q_ADD_ONE;
+
+typedef struct echo_r_add_one
+{
+	uint32 response;
+} ECHO_R_ADD_ONE;
+
+typedef struct echo_q_echo_data
+{
+	uint32 size;
+	char *data;
+} ECHO_Q_ECHO_DATA;
+
+typedef struct echo_r_echo_data
+{
+	uint32 size;
+	char *data;
+} ECHO_R_ECHO_DATA;
+
+typedef struct echo_q_source_data
+{
+	uint32 size;
+} ECHO_Q_SOURCE_DATA;
+
+typedef struct echo_r_source_data
+{
+	uint32 size;
+	char *data;
+} ECHO_R_SOURCE_DATA;
+
+typedef struct echo_q_sink_data
+{
+	uint32 size;
+	char *data;
+} ECHO_Q_SINK_DATA;
+
+typedef struct echo_r_sink_data
+{
+} ECHO_R_SINK_DATA;
+
+#endif