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sems/apps/jsonrpc/RpcPeer.h

132 lines
3.5 KiB

/*
* $Id: ModMysql.cpp 1764 2010-04-01 14:33:30Z peter_lemenkov $
*
* Copyright (C) 2010 TelTech Systems Inc.
*
* This file is part of SEMS, a free SIP media server.
*
* SEMS 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 released under
* the GPL with the additional exemption that compiling, linking,
* and/or using OpenSSL is allowed.
*
* For a license to use the SEMS software under conditions
* other than those described here, or to purchase support for this
* software, please contact iptel.org by e-mail at the following addresses:
* info@iptel.org
*
* SEMS 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _RpcPeer_h_
#define _RpcPeer_h_
#include <ev.h>
#include <stdlib.h>
#include "log.h"
#include "AmArg.h"
#define MAX_RPC_MSG_SIZE 20*1024*1024 // 20k
#define MAX_NS_LEN_SIZE 10
#define SEND_SLEEP 10000 // 10 ms send retry
#include <map>
#include <string>
struct JsonrpcPeerConnection {
std::string id;
// event queue keys that should receive the reply
// to requests sent on that connection
// req_id queue udata
std::map<std::string, std::pair<std::string, AmArg > > replyReceivers;
// if present, notifications will be sent
// to that event queue directly
std::string notificationReceiver;
// if present, requests will be sent
// to that event queue directly
std::string requestReceiver;
int flags;
enum {
FL_CLOSE_ALWAYS = 1, // always close connection after request processed
FL_CLOSE_WRONG_REPLY = 2, // close connection if reply with unknown ID received
FL_CLOSE_NO_REPLYLINK = 4, // close connection if reply queue for a request missing
FL_CLOSE_NO_REQUEST_RECV = 8, // close connection if reques queue missing
FL_CLOSE_NO_NOTIF_RECV = 16 // close connection if notification queue missing
};
JsonrpcPeerConnection() {
req_id = rand()%1024;
}
int req_id;
JsonrpcPeerConnection(const std::string& id)
: id(id) {
DBG("created connection '%s'\n", id.c_str());
}
virtual ~JsonrpcPeerConnection() {
DBG("destroying connection '%s'\n", id.c_str());
}
void notifyDisconnect();
};
struct JsonrpcNetstringsConnection
: public JsonrpcPeerConnection
{
int fd;
ev_io ev_write;
ev_io ev_read;
char snd_size[MAX_NS_LEN_SIZE+1];
char msgbuf[MAX_RPC_MSG_SIZE];
unsigned int msg_size;
unsigned int rcvd_size;
bool in_msg;
bool msg_recv;
JsonrpcNetstringsConnection(const std::string& id);
~JsonrpcNetstringsConnection();
int connect(const std::string& host, int port, std::string& res_str);
void close();
enum {
CONTINUE = 0,
REMOVE,
DISPATCH
} ReadResult;
/** @returns ReadResult */
int netstringsRead();
/**
blocking write: blocks until message in msgbuf
with size msg_size is written
*/
int netstringsBlockingWrite();
void resetRead();
bool messagePending();
bool messageIsRecv();
};
#endif