async-io-state-discard Function

Summary

Discards some bytes from the internal buffer in an async-io-state.

Package

comm

Signature

async-io-state-discard async-io-state discard => unread-buffer-length

Arguments

Values

Description

The function async-io-state-discard discards the first discard bytes from the internal buffer in async-io-state. The rest of the buffer is preserved for future reading.

async-io-state-discard must only be called inside the scope of the callback of async-io-state-read-with-checking. Once async-io-state-discard has been called, the callback must not access the buffer again.

The return value unread-buffer-length is the remaining number of bytes in the buffer.

See also

async-io-state-read-with-checking
25.7.2 The Async-I/O-State API
25 TCP and UDP socket communication and SSL