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[edit] ACK Responses

Syntax

ACK [<int errorid>@<int position>] {command} description

where:

• errorid

an integer to indicate witch kind of error occured. The following constant names for this value are taken from ack.h:

ACK_ERROR_NOT_LIST = 1

ACK_ERROR_ARG = 2

ACK_ERROR_PASSWORD = 3

ACK_ERROR_PERMISSION = 4

ACK_ERROR_UNKNOWN = 5

ACK_ERROR_NO_EXIST = 50

ACK_ERROR_PLAYLIST_MAX = 51

ACK_ERROR_SYSTEM = 52

ACK_ERROR_PLAYLIST_LOAD = 53

ACK_ERROR_UPDATE_ALREADY = 54

ACK_ERROR_PLAYER_SYNC = 55

ACK_ERROR_EXIST = 56

• position

indicates the position in a command_list, if the command, that caused the response was part of such a list. Otherwise position is 0.

• description

a short explanation of the error. Maybe void.

Example Session

~$ telnet localhost 6600

Trying 127.0.0.1...

Connected to localhost.localdomain.

Escape character is '^]'.

OK MPD 0.13.0

pay

ACK [5@0] {} unknown command "pay"

play

OK

play "Gilberto Santa Rosa - Perdoname.mp3"

ACK [2@0] {play} need a positive integer

play 1000

ACK [50@0] {play} song doesn't exist: "1000"

play 10

OK

command_list_begin

play

play

pay

play

command_list_end

ACK [5@2] {} unknown command "pay"

--Johanng 13:52, 23 April 2008 (UTC)