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fpsend function

In unit Sockets

Send data through socket.

Declaration

pascal
function fpsend(s: cint; msg: pointer; len: size_t; flags: cint)
: ssize_t

Description

fpSend sends Len bytes starting from address Msg to socket S. S must be in a connected state. Options can be passed in Flags.

The function returns the number of bytes sent, or -1 if a detectable error occurred.

Flags can be one of the following:

1
Process out-of band data.
4
Bypass routing, use a direct interface.

Errors

Errors are reported in SocketError, and include the following:

ESockEBADF
The socket descriptor is invalid.
ESockENOTSOCK
The descriptor is not a socket.
ESockEFAULT
The address is outside your address space.
ESockEMSGSIZE
The message cannot be sent atomically.
ESockEWOULDBLOCK
The requested operation would block the process.
ESockENOBUFS
The system doesn't have enough free buffers available.

See also

An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.