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$Direction

From DCppWiki

Syntax

$Direction <direction> <number>|

Description

This command is sent as a response to $Key. It decides which party gets to download.

  • <direction> is either "Upload" or "Download", the only reason to say "Upload" would be that your client does not want to download anything from your peer.
  • <number> is a random number, when both clients want to download, the one with the higher number starts first. if the numbers are equal, the connection is closed.

Peculiarities

The highest <number> DC++ sends is 0x7FFF, NMDC will disconnect if it recieves a higher number.

DC++ does not send this command immediately after $Lock when an EXTENDED lock is encountered. See the $Supports.

DC++ has a bug that occurs when:

  • client A has 0 free slots, client B may have free slots
  • client B wants files from A, client A wants files from B

If client A tries to get something from B and it loses the random number "battle", client B doesn't get a slot because slots are full, and the status bar keeps saying "Connecting...". A patch for this is given on the discussion page. It cheats it's way out of the situation by using a high random number after it has lost, and returns to normal random when it has won.