Optimize message format

[davidfowl]

This is our message format today.

{"MessageId":"Microsoft.AspNet.SignalR.Samples.Raw.RawConnection,0000000000000001|6d3dbbf4-71d2-4e1e-9930-783670e5ce57,0000000000000001|ACK_6d3dbbf4-71d2-4e1e-9930-783670e5ce57,0000000000000000|Microsoft.AspNet.SignalR.Samples.Raw.RawConnection.foo,0000000000000000","Disconnect":false,"TimedOut":false,"TransportData":{"Groups":["Microsoft.AspNet.SignalR.Samples.Raw.RawConnection.foo"]},"Messages":[{"type":"Broadcast","from":"6d3dbbf4-71d2-4e1e-9930-783670e5ce57","data":""}]}
#859 will reduce the size of the cursor significantly. We can make this better by changing the name of the fields to be single characters.

This is a protocol change so all clients will break.

[NTaylorMullen]

+1

[MosheL]

+1

[halter73]

Old
{"MessageId":"B,2CE|K,C|L,2|M,0|I,0|J,0","Disconnect":false,"TimedOut":false,"TransportData":{"Groups":["demo.foo","demo.bar"]},"Messages":[{"Hub":"demo","Method":"fromArbitraryCode","Args":["11/1/2012 7:54:17 PM"],"State":null}]}

New

Hubs
{"C":"B,2CE|K,C|L,2|M,0|I,0|J,0","M":[{"H":"demo","M":"fromArbitraryCode","A":["11/1/2012 7:54:17 PM"]}]}
{"C":"B,2CE|K,C|L,2|M,0|I,0|J,0","G":["demo.foo"],"g":["demo.bar"],"T":1,"M":[{"H":"demo","M":"fromArbitraryCode","A":["11/1/2012 7:54:17 PM"]}]}

Hub Payloads (Old)
{"hub":"dashboard","method":"SetBroadcastSize","args":[32],"state":{},"id":2}
{"State":{},"Result":null,"Id":"2","Error":null,"StackTrace":null}
{"State":{},"Result":{"ConnectionBehavior":0,"BroadcastBatching":false,"BroadcastCount":2,"BroadcastSeconds":1,"BroadcastSize":32,"Broadcasting":true,"ServerFps":2},"Id":"0","Error":null,"StackTrace":null}

Hub Payloads (New)
{"H":"dashboard","M":"SetBroadcastSize","A":[32],"S":{"x":1},"I":2}
{"H":"dashboard","M":"SetBroadcastSize","A":[32],"I":2} -> No state

{"R":{"ConnectionBehavior":0,"BroadcastBatching":false,"BroadcastCount":2,"BroadcastSeconds":1,"BroadcastSize":32,"Broadcasting":true,"ServerFps":2},"I":"0"}
{"I": 0}  -> no result
{"I": 0, "S":{"x":1},"R":1} -> result
{"I": 0, "E":"This is an error" } -> error
{"I": 0, "E":"This is an error", "T": "Some stack trace here" } -> error and stack

PersistentConnections
{"C":"B,2CE|K,C|L,2|M,0|I,0|J,0","M":["foo"]}

Persistent Response:
C - cursor
M - Messages
T - Timeout (only if true) value is 1
D - Disconnect (only if true) value is 1
R - All Groups (Client groups should be reset to match this list exactly)
G - Groups added
g - Groups removed

Hub message:
H - Hub name
M - method name
A - arguments
S - state (if not null)

Hub Method Return:
I - index
R - result
S - state
E - error
T - stack trace

[Xiaohongt]

verified