InterruptChannelHandshake Class Reference

Checks the first line a would-be interrupt channel sends. More...

#include <InterruptChannelHandshake.h>

Public Types
enum class	State { pending , accepted , rejected }

Public Member Functions
	InterruptChannelHandshake (std::string token)
State	Feed (const char *data, std::size_t length)
	Processes the next length bytes the connection sent.
State	GetState () const

Detailed Description

Checks the first line a would-be interrupt channel sends.

Maxima's Lisp opens a second connection to wxMaxima's server that wxMaxima writes "interrupt" to (see MaximaInterruptChannel and wx-open-interrupt-channel in wxMathML.lisp). wxMaxima's server listens on a local port anybody on this machine can connect to, so a connection only becomes the interrupt channel after its first line is the secret wxMaxima handed to Maxima in MAXIMA_AUTH_CODE.

Kept free of sockets and of wxWidgets so it can be tested on its own: bytes go in through Feed() in whatever pieces the network delivers them.

Member Function Documentation

Feed()

InterruptChannelHandshake::State InterruptChannelHandshake::Feed	(	const char *	data,
		std::size_t	length
	)

Processes the next length bytes the connection sent.

Returns the state afterwards. Once the state is accepted or rejected it no longer changes: whatever a channel sends after its token is ignored.

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The documentation for this class was generated from the following files:

• src/InterruptChannelHandshake.h
• src/InterruptChannelHandshake.cpp