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| Allegro CL version 9.0 Unrevised from 8.2 to 9.0. 8.2 version

## send-to

Arguments: sock buffer size &key remote-host remote-port ipv6 scope-id

For datagram sockets you can't do normal Lisp stream I/O. The data is written to the socket using this function.

The buffer argument can be a string or a byte vector; the size argument is the number of bytes of data to send. (The buffer argument is actually passed unmodified to a foreign function that will grab bytes from the address, so any simple 1-d Lisp array with any element size can in principle work, given the right byte count, provided sender and receiver have the same endianess.)

remote-host and remote-port describe where to send the data. If they aren't given then the values saved when the socket was created with make-socket are used.

The ipv6 and scope-id keyword arguments are part of IPv6 support. ipv6 defaults to the value of `*ipv6*`. This keyword argument is passed on to lookup-hostname when resolving remote-host.

scope-id specifies the interface to use when sending IPv6 traffic to remote-host. If remote-host is specified and is an ipv6-address structure, its `scope-id` slot will be updated to the value of the scope-id keyword argument.

If scope-id is not specified, then the scope-id slot of the remote-host argument will be used. If remote-host is not specified or does not have a scope-id, then 0 will be used.

Method for file-datagram-socket

Arguments: (sock file-datagram-socket) buffer size &key remote-filename

The method for `file-datagram-socket`s is like the method for datagram sockets described above, except it is used for sockets within the address family `:file`.

The method for file-datagram-socket is unaffected by the IPv6 changes. file-datagram sockets are not internet sockets so they cannot use IPv6 (or IPv4) addresses.

See socket.htm for general information on sockets in Allegro CL.

Copyright (c) 1998-2019, Franz Inc. Oakland, CA., USA. All rights reserved.
This page was not revised from the 8.2 page.
Created 2012.5.30.

|  | ToC | DocOverview | CGDoc | RelNotes | FAQ | Index | PermutedIndex
| Allegro CL version 9.0 Unrevised from 8.2 to 9.0. 8.2 version