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when a relatively small number of relatively short messages are expected to be transmitted, such as for example infrequent state-change messages, or as part of a peer-discovery protocol. The
Mailslot mechanism allows for short message broadcasts ("datagrams") to all listening computers across a given
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can write to it by name. Only the server can read the mailslot, as such mailslots represent a one-way communication mechanism. A server-client interface could consist of two processes communicating locally or across a network. Mailslots operate over the RPC protocol and work across all computers in
81:. The Messenger Service, not to be confused with the MSN Messenger internet chat service, is essentially a Mailslot server that waits for a message to arrive. When a message arrives it is displayed in a popup onscreen. The
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the same network domain. Mailslots offer no confirmation that a message has been received. Mailslots are generally a good choice when one client process must broadcast a message to multiple server processes.
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A number of programs also use
Mailslots to communicate. Generally these are amateur chat clients and other such programs. Commercial programs usually prefer
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mechanism, available on the
Microsoft Windows operating system, that allows communication between processes both locally and over a
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command is therefore a type of
Mailslot client, because it writes to specified mailslots on a network.
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Mailslots are implemented as files in a mailslot file system (MSFS). Examples of
Mailslots include:
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16:"Mailslot" redirects here. For the postal delivery receptacle, see
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The most widely known use of the
Mailslot IPC mechanism is the
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MAILSLOT\HydraLsServer - Microsoft
Terminal Services Licensing
52:Mailslots function as a server-client interface. A
151:Using a Mailslot to read/write data over a network
35:. The use of Mailslots is generally simpler than
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146:Using Mailslots for Interprocess Communication
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156:The beginning of the end of Remote Mailslots
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120:MAILSLOT\53cb31a0\UnimodemNotifyTSP
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141:Mailslots (MSDN Documentation)
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101:MAILSLOT\Messngr - Microsoft
77:-line of products, including
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130:BrightStor Discovery Service
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25:Mailslot
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