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97 lines
2.9 KiB
97 lines
2.9 KiB
7 years ago
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// Copyright 2018 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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// simple abstraction for implementing pss functionality
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//
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// the pss client library aims to simplify usage of the p2p.protocols package over pss
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//
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// IO is performed using the ordinary p2p.MsgReadWriter interface, which transparently communicates with a pss node via RPC using websockets as transport layer, using methods in the PssAPI class in the swarm/pss package
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//
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//
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// Minimal-ish usage example (requires a running pss node with websocket RPC):
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//
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//
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// import (
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// "context"
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// "fmt"
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// "os"
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// pss "github.com/ethereum/go-ethereum/swarm/pss/client"
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// "github.com/ethereum/go-ethereum/p2p/protocols"
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// "github.com/ethereum/go-ethereum/p2p"
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// "github.com/ethereum/go-ethereum/swarm/pot"
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// "github.com/ethereum/go-ethereum/swarm/log"
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// )
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//
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// type FooMsg struct {
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// Bar int
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// }
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//
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//
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// func fooHandler (msg interface{}) error {
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// foomsg, ok := msg.(*FooMsg)
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// if ok {
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// log.Debug("Yay, just got a message", "msg", foomsg)
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// }
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// return errors.New(fmt.Sprintf("Unknown message"))
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// }
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//
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// spec := &protocols.Spec{
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// Name: "foo",
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// Version: 1,
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// MaxMsgSize: 1024,
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// Messages: []interface{}{
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// FooMsg{},
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// },
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// }
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//
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// proto := &p2p.Protocol{
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// Name: spec.Name,
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// Version: spec.Version,
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// Length: uint64(len(spec.Messages)),
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// Run: func(p *p2p.Peer, rw p2p.MsgReadWriter) error {
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// pp := protocols.NewPeer(p, rw, spec)
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// return pp.Run(fooHandler)
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// },
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// }
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//
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// func implementation() {
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// cfg := pss.NewClientConfig()
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// psc := pss.NewClient(context.Background(), nil, cfg)
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// err := psc.Start()
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// if err != nil {
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// log.Crit("can't start pss client")
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// os.Exit(1)
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// }
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//
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// log.Debug("connected to pss node", "bzz addr", psc.BaseAddr)
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//
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// err = psc.RunProtocol(proto)
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// if err != nil {
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// log.Crit("can't start protocol on pss websocket")
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// os.Exit(1)
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// }
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//
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// addr := pot.RandomAddress() // should be a real address, of course
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// psc.AddPssPeer(addr, spec)
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//
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// // use the protocol for something
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//
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// psc.Stop()
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// }
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//
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// BUG(test): TestIncoming test times out due to deadlock issues in the swarm hive
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package client
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