96 lines
2.5 KiB
Text
96 lines
2.5 KiB
Text
# Sockets
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This implements the Forth part of the socket I/O interface.
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As with the file I/O device, the socket words are a thin
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wrapper over the standard Unix socket functions. This means
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that it is fairly low level.
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~~~
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{{
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'Sockets var
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:identify
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@Sockets n:zero? 0; drop
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#7 io:scan-for dup n:negative?
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[ drop 'IO_DEVICE_TYPE_0004_NOT_FOUND s:put nl ]
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[ !Sockets ] choose ;
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---reveal---
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:socket:operation identify @Sockets io:invoke ;
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}}
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~~~
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`socket:gethostbyname` gets the host IP in dottode notation. Provide
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an address to hold the dotted notation and a string containing the
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host name.
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~~~
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:socket:gethostbyname (as-) #0 socket:operation ;
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~~~
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`socket:create` creates a new socket. It does not take any
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parameters, and returns the socket id.
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~~~
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:socket:create (-n) #1 socket:operation ;
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~~~
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`socket:bind` binds a socket to a port. The socket should be
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provided as the socket id, and the port number should be a
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string. This will return 0 if successful, -1 if not successful,
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and a host specific error code.
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~~~
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:socket:bind (sn-n) #2 socket:operation ;
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~~~
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`socket:listen` prepares a socket for accepting incoming
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connections. Takes a backlog count and a socket id. Returns
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a flag (0 success, -1 failed) and an error code.
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~~~
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:socket:listen (nn-nn) #3 socket:operation ;
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~~~
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`socket:accept` begins accepting connections on the provided
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socket id. Returns a new socket id and an error code.
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~~~
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:socket:accept (n-nn) #4 socket:operation ;
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~~~
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`socket:connect` connects to a server. Provide a socket id,
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this will return a status flag and an error code.
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~~~
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:socket:connect (n-nn) #5 socket:operation ;
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~~~
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`socket:send` sends a string to a socket. This will return
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the number of characters sent and an error code. It takes a
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string and a socket id.
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~~~
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:socket:send (sn-nn) #6 socket:operation ;
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~~~
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`socket:recv` is a wrapper over recv(2). It takes an address,
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a maxmimum number of bytes to read, and a socket id. It returns
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the number of bytes received and an error code.
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~~~
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:socket:recv (ann-nn) #8 socket:operation ;
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~~~
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`socket:close` is a wrapper over close(2). It takes a socket id
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and closes the socket.
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~~~
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:socket:close (n-) #10 socket:operation ;
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~~~
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`socket:configure` is used before `socket:bind` to set some
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internal state. Takes the host name and port, both as strings.
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Does not return anything.
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~~~
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:socket:configure (ss-) #11 socket:operation ;
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~~~
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