ipc data frame codec different with java ipc

[XunDai]

java frame:
[4 bytes serial] [4 bytes number of package] [package [4 bytes length][length bytes package payload]]
javascript can not call java server.

[mtth]

IPC with Java can be done over many different transports (e.g. HTTP, Netty). If you use a transport with a custom transmission format (similar to your example), you'll have to:

• decode it into the format defined in the specification.
• if the transport is stateful, implement the corresponding IdType.

[mtth]

Closing since #43 is basically the same question.