Message Passing: Difference between revisions
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==The "Port" abstraction==
Many
Ports can be allocated by servers at will and may restrict who can send and who cannot send on it. Using ports, the 'A listen to C, B sends to A' problem above can be solved by creating a new port p that A will open to C only (and sending a message to C to tell p's port number). A can now wait for C's message by receiving on p only. B's attempt to send a message on port q of A will not interfere.
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