Server doesn't reply any peer created after old peers have been closed.

[mattatcha]

Here are some logs. You can reproduce the same problem by running the tests I created in the referenced PR.

You should be able to see that the last client sends a frame but the server doesn't read the frame.

2014/11/01 20:34:20 6 Sending frame [ 0 ]: &{false 0xc2080059e0 0xc208005920  0 0 Arith.Add map[]  false []}
2014/11/01 20:34:20 6 Pumping started for channel 0
2014/11/01 20:34:20 6 Sending frame: &{false 0xc208005aa0 0xc208005920  1 0  map[]  true [130 161 65 7 161 66 8]}
2014/11/01 20:34:20 Reading frame: {false <nil> <nil>  0 0 Arith.Add map[]  false []}
2014/11/01 20:34:20 4 Pumping started for channel 0
2014/11/01 20:34:20 Reading frame: {false <nil> <nil>  1 0  map[]  true [130 161 65 7 161 66 8]}
2014/11/01 20:34:20 4 Sending frame: &{false 0xc208005d40 0xc208005bc0  1 0  map[]  true [129 161 67 15]}
2014/11/01 20:34:20 4 Pumping finished for channel 0
2014/11/01 20:34:20 EOF
2014/11/01 20:34:20 Reading frame: {false <nil> <nil>  1 0  map[]  true [129 161 67 15]}
2014/11/01 20:34:20 6 Pumping finished for channel 0
2014/11/01 20:34:20 read tcp 127.0.0.1:9876: use of closed network connection
2014/11/01 20:34:20 7 Connecting 127.0.0.1:9876
2014/11/01 20:34:20 EOF
2014/11/01 20:34:20 sending greeting to  127.0.0.1:9876 :  f724082e-b216-4aa3-bf68-46913ae5c91c
2014/11/01 20:34:20 received greeting from  127.0.0.1:57515 :  f724082e-b216-4aa3-bf68-46913ae5c91c
2014/11/01 20:34:20 sending greeting to  127.0.0.1:57515 :  3246bc2c-f770-4ad4-8a5a-cfe611a6db82
2014/11/01 20:34:20 received greeting from  127.0.0.1:9876 :  3246bc2c-f770-4ad4-8a5a-cfe611a6db82
2014/11/01 20:34:20 7 Connected
2014/11/01 20:34:20 7 First connection, routing...
2014/11/01 20:34:20 7 Sending frame [ 0 ]: &{false 0xc208005f80 0xc208005ec0  0 0 Arith.Add map[]  false []}
2014/11/01 20:34:20 7 Pumping started for channel 0
2014/11/01 20:34:20 7 Sending frame: &{false 0xc2080aa060 0xc208005ec0  1 0  map[]  true [130 161 65 7 161 66 8]}