General:
- Message encapsulation is temporary until integration with whisper
Incoming message handling:
- Implements a dispatcher for registering handler functions to pss topics
- Handlers can be any sort of function, and can send/receive on p2p.MsgReadWriter
- Actual p2p.Protocol handling now as pluggable convenience function
Sending and routing:
- Added temporary cache solution based on message hash digest
- Send and forward split up as separate methods
- Send is now payload agnostic (p2p.Protocol replies massaged in p2p.MsgWriter)
Tests:
- TestPssRandom...
Sends PSS between randomly selected nodes in different population magnitudes
- TestPssFullLinearEcho
A->B->C->B->A ping/pong over pss, where A and C are running pss
- TestPssFullRandom50Pct
10 nodes where 5 are running pss, 5 sends to/from random nodes
(messages currently get stuck in kad. routing, discarded by cache block)
- Protocoltester tests status unknown
This change imports the Swarm protocol codebase. Compared to the 'swarm'
branch, a few mostly cosmetic changes had to be made:
* The various redundant log message prefixes are gone.
* All files now have LGPLv3 license headers.
* Minor code changes were needed to please go vet and make the tests
pass on Windows.
* Further changes were required to adapt to the go-ethereum develop
branch and its new Go APIs.
Some code has not (yet) been brought over:
* swarm/cmd/bzzhash: will reappear as cmd/bzzhash later
* swarm/cmd/bzzup.sh: will be reimplemented in cmd/bzzup
* swarm/cmd/makegenesis: will reappear somehow
* swarm/examples/album: will move to a separate repository
* swarm/examples/filemanager: ditto
* swarm/examples/files: will not be merged
* swarm/test/*: will not be merged
* swarm/services/swear: will reappear as contracts/swear when needed
