Constrained Application Protocol Client and Server for go

You can read more about CoAP in RFC 7252. I also did some preliminary work on SUBSCRIBE support from an early draft.

Differences from original `dustin/go-coap`

Added minor helper function to populate URI options.
Added configurable receive timeout in backgwards compatible way. Changed ResponseTimeout variable to DefaultResponseTimeout to emphasise its role change and to be able to track down its usage within package.
Example programs package references have been changed from dustin/go-coap to Kulak/go-coap.
Message can be cloned.

Motivation for all this change: need to support existing application functionality.

Name		Name	Last commit message	Last commit date
Latest commit History 110 Commits
example		example
.gitignore		.gitignore
LICENSE		LICENSE
README.markdown		README.markdown
client.go		client.go
client_test.go		client_test.go
message.go		message.go
message_test.go		message_test.go
messagetcp.go		messagetcp.go
messagetcp_test.go		messagetcp_test.go
server.go		server.go
server_test.go		server_test.go
servmux.go		servmux.go
servmux_test.go		servmux_test.go