$Id: protocol-direct-connections,v 1.1 2005/03/17 11:02:44 bobas Exp $

Vypress Chat 1.9x+ direct connection descriptions
(used for file transfer and private messages)
2005-03-14
---------------------------------

You should have TCP listening socket at the same port as you have
UDP message socket. After accepting and getting the socket you
should recv an packet header, with 2 newlines at the end. newlines
are (char)0x0a.

[File transfer request]
	protocol: vychat<0x0a>
	version: 1<0x0a>
	message-type: file-transfer<0x0a>
	content-type: binary<0x0a>
	content-length: 213<0x0a>
	file-name: abc.txt<0x0a>
	file-desc: my text file description<0x0a>
	files-left: 0<0x0a>
	desc-files-name:<0x20>
	desc-files-size: 0<0x0a>
	user-uuid: my-uuid(MS UUID string representation)<0x0a>
	<0x0a>
	<0x0a>
	<0x00>
	
	[<file-content> if we get <file-transfer-ack>]

[File transfer ack]
	protocol: vychat<0x0a>
	version: 1<0x0a>
	message-type: file-transfer-ready<0x0a>
	<0x0a>

[File transfer deny]
	protocol: vychat<0x0a>
	version: 1<0x0a>
	message-type: file-transfer-deny<0x0a>
	start-from: 0<0x0a>
	<0x0a>

[File transfer done]
	protocol: vychat<0x0a>
	version: 1<0x0a>
	message-type: file-transfer-done<0x0a>
	?????????????????????????????????

[Chat request]
	protocol: vychat<0x0a>
	version: 1<0x0a>
	message-type: chat-request<0x0a>
	user-uuid: <my-uuid(MS UUID string representation)><0x0a>
	user-name: <my-nickname><0x0a>
	ckey: <public key for this communication><0x0a>
	content-length: 0<0x0a>
	<0x0a>

[Chat request OK]
	protocol: vychat<0x0a>
	version: 1<0x0a>
	message-type: chat-request-ok<0x0a>
	user-uuid: <my-uuid(MS UUID string representation)><0x0a>
	user-name: HIGHLAND<0x0a>
	ckey: <0x0a>
	content-length: 0<0x0a>
	<0x0a>

[Chat msg: typing]
	protocol: vychat<0x0a>
	version: 1<0x0a>
	message-type: chat-msg-typing<0x0a>
	user-uuid: <my-uuid(MS UUID string representation)><0x0a>
	user-name: HIGHLAND<0x0a>
	typing-mode: <'0' or '1'><0x0a>
	content-length: 0<0x0a>
	<0x0a>

[Chat msg]
	protocol: vychat<0x0a>
	version: 1<0x0a>
	message-type: chat-msg<0x0a>
	user-uuid: <my-uuid(MS UUID string representation)><0x0a>
	user-name: HIGHLAND<0x0a>
	content-length: <content-length><0x0a>
	<0x0a>
	<content>

[Chat request FIN]
	protocol: vychat<0x0a>
	version: 1<0x0a>
	message-type: chat-request-fin
	user-uuid: <my-uuid><0x0a>
	user-name: <my-nickname><0x0a>
	content-length: 0<0x0a>
	<0x0a>