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from among all connected peers. When sending messages a <em>ZMQ_ROUTER</em> socket shall
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remove the first part of the message and use it to determine the <em>identity</em> of
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the peer the message shall be routed to. If the peer does not exist anymore
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the message shall be silently discarded.</p></div>
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the message shall be silently discarded by default, unless <em>ZMQ_ROUTER_BEHAVIOR</em>
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socket option is set to <em>1</em>.</p></div>
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<div class="paragraph"><p>When a <em>ZMQ_ROUTER</em> socket enters an exceptional state due to having reached the
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high water mark for all peers, or if there are no peers at all, then any
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messages sent to the socket shall be dropped until the exceptional state ends.
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Likewise, any messages routed to a non-existent peer or a peer for which the
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individual high water mark has been reached shall also be dropped.</p></div>
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high water mark for all peers, then any messages sent to the socket shall be dropped
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until the exceptional state ends. Likewise, any messages routed to a peer for which
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the individual high water mark has been reached shall also be dropped.</p></div>
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<div class="paragraph"><p>When a <em>ZMQ_REQ</em> socket is connected to a <em>ZMQ_ROUTER</em> socket, in addition to the
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<em>identity</em> of the originating peer each message received shall contain an empty
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<em>delimiter</em> message part. Hence, the entire structure of each received message
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doc/zmq_socket.html
