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f0f16505e5
Copyrights had become ads for Sustrik's corporate sponsors, going against the original agreement to share copyrights with the community (that agreement was: one line stating iMatix copyright + one reference to AUTHORS file). The proliferation of corporate ads is also unfair to the many individual authors. I've removed ALL corporate title from the source files so the copyright statements can now be centralized in AUTHORS and source files can be properly updated on an annual basis.
137 lines
3.8 KiB
C++
137 lines
3.8 KiB
C++
/*
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Copyright (c) 2007-2013 Contributors as noted in the AUTHORS file
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This file is part of 0MQ.
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0MQ is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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0MQ is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ZMQ_ROUTER_HPP_INCLUDED__
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#define __ZMQ_ROUTER_HPP_INCLUDED__
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#include <map>
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#include "socket_base.hpp"
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#include "session_base.hpp"
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#include "stdint.hpp"
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#include "blob.hpp"
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#include "msg.hpp"
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#include "fq.hpp"
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namespace zmq
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{
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class ctx_t;
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class pipe_t;
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// TODO: This class uses O(n) scheduling. Rewrite it to use O(1) algorithm.
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class router_t :
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public socket_base_t
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{
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public:
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router_t (zmq::ctx_t *parent_, uint32_t tid_, int sid);
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~router_t ();
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// Overloads of functions from socket_base_t.
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void xattach_pipe (zmq::pipe_t *pipe_, bool icanhasall_);
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int xsetsockopt (int option_, const void *optval_, size_t optvallen_);
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int xsend (msg_t *msg_);
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int xrecv (msg_t *msg_);
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bool xhas_in ();
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bool xhas_out ();
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void xread_activated (zmq::pipe_t *pipe_);
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void xwrite_activated (zmq::pipe_t *pipe_);
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void xterminated (zmq::pipe_t *pipe_);
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protected:
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// Rollback any message parts that were sent but not yet flushed.
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int rollback ();
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private:
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// Receive peer id and update lookup map
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bool identify_peer (pipe_t *pipe_);
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// Fair queueing object for inbound pipes.
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fq_t fq;
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// True iff there is a message held in the pre-fetch buffer.
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bool prefetched;
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// If true, the receiver got the message part with
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// the peer's identity.
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bool identity_sent;
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// Holds the prefetched identity.
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msg_t prefetched_id;
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// Holds the prefetched message.
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msg_t prefetched_msg;
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// If true, more incoming message parts are expected.
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bool more_in;
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struct outpipe_t
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{
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zmq::pipe_t *pipe;
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bool active;
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};
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// We keep a set of pipes that have not been identified yet.
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std::set <pipe_t*> anonymous_pipes;
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// Outbound pipes indexed by the peer IDs.
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typedef std::map <blob_t, outpipe_t> outpipes_t;
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outpipes_t outpipes;
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// The pipe we are currently writing to.
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zmq::pipe_t *current_out;
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// If true, more outgoing message parts are expected.
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bool more_out;
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// Peer ID are generated. It's a simple increment and wrap-over
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// algorithm. This value is the next ID to use (if not used already).
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uint32_t next_peer_id;
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// If true, report EAGAIN to the caller instead of silently dropping
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// the message targeting an unknown peer.
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bool mandatory;
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bool raw_sock;
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router_t (const router_t&);
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const router_t &operator = (const router_t&);
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};
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class router_session_t : public session_base_t
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{
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public:
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router_session_t (zmq::io_thread_t *io_thread_, bool connect_,
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socket_base_t *socket_, const options_t &options_,
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const address_t *addr_);
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~router_session_t ();
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private:
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router_session_t (const router_session_t&);
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const router_session_t &operator = (const router_session_t&);
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};
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}
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#endif
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