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/* -*- C++ -*- */
// $Id$
// ============================================================================
//
// = LIBRARY
// apps
//
// = FILENAME
// Peer_Message.h
//
// = AUTHOR
// Doug Schmidt
//
// ============================================================================
#if !defined (PEER_MESSAGE)
#define PEER_MESSAGE
// This is the unique connection identifier that denotes a particular
// Channel in the Gateway.
typedef short CONN_ID;
class Peer_Addr
// = TITLE
// Peer address is used to identify the source/destination of a
// routing message.
{
public:
Peer_Addr (CONN_ID cid = -1, u_char lid = 0, u_char pay = 0)
: conn_id_ (cid), logical_id_ (lid), payload_ (pay) {}
int operator== (const Peer_Addr &pa) const
{
return this->conn_id_ == pa.conn_id_
&& this->logical_id_ == pa.logical_id_
&& this->payload_ == pa.payload_;
}
CONN_ID conn_id_;
// Unique connection identifier that denotes a particular Channel.
u_char logical_id_;
// Logical ID.
u_char payload_;
// Payload type.
};
class Peer_Header
// = TITLE
// Fixed sized header.
{
public:
typedef u_short ROUTING_ID;
// Type used to route messages from gatewayd.
enum
{
INVALID_ID = -1 // No peer can validly use this number.
};
ROUTING_ID routing_id_;
// Source ID.
size_t len_;
// Length of the message in bytes.
};
class Peer_Message
// = TITLE
// Variable-sized message (buf_ may be variable-sized between
// 0 and MAX_PAYLOAD_SIZE).
{
public:
enum { MAX_PAYLOAD_SIZE = 1024 };
// The maximum size of an Peer message (see Peer protocol specs for
// exact #).
Peer_Header header_;
// Message header.
char buf_[MAX_PAYLOAD_SIZE];
// Message payload.
};
#endif /* PEER_MESSAGE */
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