Software Authority Protocol

TCP/IP Protocol for controlling endpoint routers

Fred Gleason

Overview

Messages to the Software Authority routing service are by means of a TCP SOCK_STREAM connection to TCP port 9500 on the host server.

Protocol Command Syntax

Commands from a control client to the service have the following general syntax:

cmd-phrase [arg] [...]CR/LF

cmd-phrase: A single phrase, consisting of one or more "camel-case" words; containing no whitespace, case-insensitive.
arg: Zero or more arguments, delimited by a space character (ASCII 32).
CR/LF: The ASCII character CR (13) followed by LF (10).

Protocol Response Syntax

Responses from the service to the control client take one of two possible forms:

State Updates

Single line message communicating a change of state, with the syntax:

resp-phrase [arg] [...]CR/LF

resp-phrase: A single phrase, consisting of one or more "camel-case" words; containing no whitespace.
arg: Zero or more arguments, delimited by a space character (ASCII 32).
CR/LF: The ASCII character CR (13) followed by LF (10).

Lists

Multi-line messages containing a list of multiple attributes. Lists are only sent in response to a command requesting them, and have the general format:

Begin cmd-phrase [- cmd-arg]CR/LF
    param1HTparam2HT[...]CR/LF
End cmd-phrase [- cmd-arg]CR/LF

Where:

cmd-phrase: The command phrase issued by the client, consisting of one or more "camel-case" words; containing no whitespace.
cmd-arg: An optional argument, provided by the command from the client.
HT: The ASCII character HT [horizontal tab] (9).
CR/LF: The ASCII character CR (13) followed by LF (10).

A Begin/End block contains zero or more lines, each line consisting of HT delimited records.

Connection Management

Messages for managing connections to the service.

Exit

Exit

Drop the TCP connection and end the session.

Login

Login user-name password

Authenticate to the service.

Note

On the Drouter system, the Login command does nothing, and will accept any combination of user-name and password as being valid. It is provided strictly for compatibility with clients designed to use PathFinder.

Quit

Quit

Drop the TCP connection and end the session.

Configuration Discovery

Messages for interrogating the system about its configuration. These commands all return list-type responses.

List Destination Names [DestNames]

DestNames router-num

Return a list of destination endpoints on the specified router.

Returns:

Begin DestNames - router-num
    endpt-num short-name long-name node-addr node-name node-slot
End DestNames - router-num

Example:

>>DestNames 2
Begin DestNames - 2
    1   Mackie 3/4   Mackie 3/4 ON FRED-XNODE   172.30.4.211   FRED-XNODE   1
    2   Mackie 5/6   Mackie 5/6 ON FRED-XNODE   172.30.4.211   FRED-XNODE   2
    3   Delta 1/2   Delta 1/2 ON FRED-XNODE   172.30.4.211   FRED-XNODE   3
    9   PGM 4   PGM 4 ON RDVIRT-SERV   172.30.4.212   RDVIRT-SERV   1
    10  PGM 3   PGM 3 ON RDVIRT-SERV   172.30.4.212   RDVIRT-SERV   2
End DestNames - 2

List Router Names [RouterNames]

RouterNames

Return a list of routers configured on this system.

Returns:

Begin RouterNames
    router-num router-name
End RouterNames

Example:

>>RouterNames
Begin RouterNames
    1 RFA-ALL
    2 Fred-Test
    3 Fred-GPIO-Test
    4 RFA_AIR_MC
    7 Rivendell-Test
    9 GPIO
    11 RFA_AIRPLAYS_BLUE
    12 RFA_AIRPLAYS_GOLD
End RouterNames

List Snapshots [SnapShots]

SnapShots router-num

Return a list of snapshots on the specified router.

Returns:

Begin SnapshotNames - router-num
    snapshot-name
End SourceNames - router-num

Example:

>>SnapshotNames 4
Begin SnapshotNames - 4
    BUR from FEED
    BUR from Studio 11
    TIB from MC
End SnapshotNames - 4

List Source Names [SourceNames]

SourceNames router-num

Return a list of source endpoints on the specified router.

Returns:

Begin SourceNames - router-num
    endpt-num short-name long-name node-addr node-name node-slot src-num stream-addr
End SourceNames - router-num

Example:

>>SourceNames 2
Begin SourceNames - 2
    1   Mackie Main   Mackie Main ON FRED-XNODE   172.30.4.211   FRED-XNODE   1   30001   239.192.117.49
    2   SRC 2   SRC 2 ON FRED-XNODE   172.30.4.211   FRED-XNODE   2   30002   239.192.117.50
    9   Rivenberry   Rivenberry ON RDVIRT-SERV   172.30.4.212   RDVIRT-SERV   1   30301   239.192.118.93
    10  SRC 2   SRC 2 ON RDVIRT-SERV   172.30.4.212   RDVIRT-SERV   2   30302   239.192.118.94
End SourceNames - 2

State Discovery

Messages for interrogating the system about its current state. These commands all return single-line style responses.

Get Crosspoint Route State [RouteStat]

RouteStat router-num [endpt-num]

If the endpt-num argument is omitted, the system will send RouteStat messages for all of the destinations that belong to the specified router-num.

Interrogate one or more destinations for their connected source. Returns messages of the following form:

RouteStat router-num dest-endpt-num src-endpt-num lock-active

Note

The lock-active field will always be "False" on Drouter as Drouter does not support the notion of locking routes.

A returned value of "0" for src-endpt-num indicates that the respective destination is either disconnected, or connected to a source that is not a member of the specified router-num.

Example (single destination):

>>RouteStat 2 2
RouteStat 2 2 17 False

Example (entire router):

>>RouteStat 2
RouteStat 2 1 17 False
RouteStat 2 2 2 False
RouteStat 2 3 0 False
RouteStat 2 9 1 False
RouteStat 2 10 1 False

Get General Purpose Input (GPI) State [GPIStat]

GPIStat router-num [endpt-num]

If the endpt-num argument is omitted, the system will send GPIStat messages for all of the sources that belong to the specified router-num.

Interrogate one or more sources for their GPI state. Returns messages of the following form:

GPIStat router-num endpt-num state-str

The returned state-str will be a five character string indicating the low (l) or high (h) state of the respective GPI source.

Note

An error will be returned if the specified router-num is not a GPIO router.

Example (single source):

>>GPIStat 3 11
GPIStat 3 11 lhlhh

Example (entire router):

>>GPIStat 3
GPIStat 3 1 lhlhh
GPIStat 3 2 hhhhh
GPIStat 3 3 hlhhh
GPIStat 3 4 hhhhh
GPIStat 3 5 hhhhh
GPIStat 3 6 hhhhh

Get General Purpose Output (GPO) State [GPOStat]

GPOStat router-num [endpt-num]

If the endpt-num argument is omitted, the system will send GPOStat messages for all of the destinations that belong to the specified router-num.

Interrogate one or more sources for their GPO state. Returns messages of the following form:

GPOStat router-num endpt-num state-str

The returned state-str will be a five character string indicating the low (l) or high (h) state of the respective GPO destination.

Note

An error will be returned if the specified router-num is not a GPIO router.

Example (single source):

>>GPOStat 3 11
GPOStat 3 11 lhlhh

Example (entire router):

>>GPOStat 3
GPOStat 3 1 lhlhh
GPOStat 3 2 hhhhh
GPOStat 3 3 hlhhh
GPOStat 3 4 hhhhh
GPOStat 3 5 hhhhh
GPOStat 3 6 hhhhh

Commands

Messages for actively changing the state of the system.

Set Snapshot [ActivateSnap / ActivateScene]

ActivateSnap router-num snapshot-name

The system will respond with zero or more RouteStat messages to reflect changed crosspoint states.

Note

ActivateScene is merely a synonym for ActivateSnap. The syntax and operation of the two commands are identical.

Example:

>>ActivateSnap 4 MAN from MC 
RouteStat 4 3 9 False
RouteStat 7 3 0 False
RouteStat 1 5045 1953 False

Set Crosspoint Route [ActivateRoute]

ActivateRoute router-num dest-endpt-num src-endpt-num

The system will respond with zero or more RouteStat messages to reflect changed crosspoint state.

Example:

>>ActivateRoute 2 3 9
RouteStat 2 3 9 False
RouteStat 7 3 0 False
RouteStat 1 5045 1953 False

Set General Purpose Input (GPI) State [TriggerGPI]

TriggerGPI router-num src-endpt-num state-str [duration]

The specified state-str should be a five character string indicating the state to which to set the specified GPI endpoint. Valid characters are:

h: Set the corresponding line to the HIGH state.
l: Set the corresponding line to the LOW state.
x: Leave the corresponding line state UNCHANGED.

Caution

The duration parameter exists solely for compatibility with PathFinder. Drouter does not support setting momentary GPI states, thus, any duration parameter given on Drouter will be silently ignored.

Note

An error will be returned if the specified router-num is not a GPIO router.

The system will respond with zero or more GPIStat messages to reflect changed GPI state. Only virtual GPIO devices can have their GPI state set remotely; attempts to do so to physical GPI devices will be silently ignored.

Example:

>>TriggerGPI 3 11 xxlxx
GPIStat 3 11 hhlhh

Set General Purpose Output (GPO) State [TriggerGPO]

TriggerGPO router-num dest-endpt-num state-str [duration]

The specified state-str should be a five character string indicating the state to which to set the specified GPO endpoint. Valid characters are:

h: Set the corresponding line to the HIGH state.
l: Set the corresponding line to the LOW state.
x: Leavethe corresponding line state UNCHANGED.

Caution

The duration parameter exists solely for compatibility with PathFinder. Drouter does not support setting momentary GPO states, thus, any duration parameter given on Drouter will be silently ignored.

Note

An error will be returned if the specified router-num is not a GPOO router.

The system will respond with zero or more GPOStat messages to reflect changed GPO state.

Example:

>>TriggerGPO 3 11 xxlxx
GPOStat 3 11 hhlhh