[erlang-questions] Distribution protocol error

[Maxim Treskin]

Just error in Pid and Reference serialization. Now I have `pong` reply :)


On 21 January 2013 12:38, Maxim Treskin <zerthurd@REDACTED> wrote:

> Hello
>
> I write implementation of Erlang Distribution Protocol for Go:
> https://github.com/metachord/eclus/blob/dist/src/erlang/node/node.go
> https://github.com/metachord/eclus/blob/dist/src/erlang/node/gen_server.go
>
> Now this implementation can publish its port via epmd (or other daemon,
> like eclus), establish incoming connection from Erlang node, parse
> messages, pass them to registered or not registered goroutines on local
> node. But I cannot send message to remote node while it seems all is ok:
>
> Incoming call to `net_kernel` process:
>
> 2013/01/21 12:24:31 NET_KERNEL: HandleCall: term.Tuple{"is_auth",
> "asd@REDACTED"}, From: term.Tuple{term.Pid{Node:"asd@REDACTED",
> Id:0x26, Serial:0x0, Creation:0x1}, term.Reference{Node:"asd@REDACTED",
> Creation:0x1, Id:[]uint32{0x32, 0x0, 0x0}}}
>
>
> Process replied (atom 'yes'):
>
> 2013/01/21 12:24:31 Send: term.Pid{Node:"asd@REDACTED", Id:0x26,
> Serial:0x0, Creation:0x1}, term.Tuple{term.Reference{Node:"asd@REDACTED",
> Creation:0x1, Id:[]uint32{0x32, 0x0, 0x0}}, "yes"}
>
>
> Find connection with node 'asd@REDACTED' and send data to this
> connection:
>
> 2013/01/21 12:24:31 Send to remote node: term.Pid{Node:"asd@REDACTED",
> Id:0x26, Serial:0x0, Creation:0x1},
> node.nodeConn{conn:(*net.TCPConn)(0x18745858), wchan:(chan
> []term.Term)(0x18799000)}
>
> Write terms to socket:
>
> 2013/01/21 12:24:31 WRITE: []term.Term{term.Tuple{2, "",
> term.Pid{Node:"asd@REDACTED", Id:0x26, Serial:0x0, Creation:0x1}},
> term.Tuple{term.Reference{Node:"asd@REDACTED", Creation:0x1,
> Id:[]uint32{0x32, 0x0, 0x0}}, "yes"}}: []byte{0x70, 0x83, 0x68, 0x3, 0x61,
> 0x2, 0x64, 0x0, 0x0, 0x64, 0x0, 0xd, 0x61, 0x73, 0x64, 0x40, 0x6c, 0x6f,
> 0x63, 0x61, 0x6c, 0x68, 0x6f, 0x73, 0x74, 0x0, 0x0, 0x0, 0x26, 0x0, 0x0,
> 0x0, 0x0, 0x1, 0x83, 0x68, 0x2, 0x64, 0x0, 0xd, 0x61, 0x73, 0x64, 0x40,
> 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x68, 0x6f, 0x73, 0x74, 0x1, 0x0, 0x0, 0x0,
> 0x32, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x64, 0x0, 0x3, 0x79, 0x65,
> 0x73}
>
>
> Raw bytes written:
>
> 2013/01/21 12:24:31 Write to enode:
>    [0 0 0 72 112
>     131 104 3 97 2 100 0 0 100 0 13 97 115 100 64 108 111 99 97 108 104
> 111 115 116 0 0 0 38 0 0 0 0 1
>     131 104 2 100 0 13 97 115 100 64 108 111 99 97 108 104 111 115 116 1 0
> 0 0 50 0 0 0 0 0 0 0 0 100 0 3 121 101 115]
>
> But on 'asd@REDACTED' node i see:
>
> =ERROR REPORT==== 21-Jan-2013::12:24:31 ===
> Invalid distribution message: {2,'','asd@REDACTED'}
>
>
> Can you help me? File erts/emulator/beam/dist.c contains many goto to
> label invalid_message, which prints this message, so I cannot find real
> matched clause for this case.
>
> Thank you
>
> --
> Max Treskin
>



-- 
Max Treskin
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