mirror of
https://github.com/nspcc-dev/neo-go.git
synced 2024-12-22 19:19:09 +00:00
Added the start of RPC + removed proxy functions.
* Set the listener of the server when opened. * refactor server RPC. * deleted proxy functions + moved TCPPeer to tcp file * implemented the start of JSON-RPC * changed string port args to int * added peerCount. * Start a server with startOpts * Updated README
This commit is contained in:
Anthony De Meulemeester
GitHub
parent
0eeb15f62d
commit
83306a5c96
7 changed files with 341 additions and 220 deletions
16
README.md
16
README.md
|
|
@ -34,9 +34,9 @@ The project will exist out of the following topics/packages:
|
|||
|
||||
1. network (started)
|
||||
2. core (started)
|
||||
3. vm (open)
|
||||
4. smartcontract (open)
|
||||
5. api (RPC server) (open)
|
||||
3. api (JSON-RPC server) (started)
|
||||
4. vm (open)
|
||||
5. smartcontract (open)
|
||||
|
||||
# Getting started
|
||||
### Server
|
||||
|
|
@ -53,8 +53,16 @@ You can add multiple seeds if you want:
|
|||
|
||||
`neoserver -seed 127.0.0.1:20333,127.0.01:20334`
|
||||
|
||||
By default the server will currently run on port 3000, for testing purposes. You can change that by setting the tcp flag:
|
||||
|
||||
`neoserver -seed 127.0.0.1:20333 -tcp 1337`
|
||||
|
||||
### RPC
|
||||
To be implemented..
|
||||
If you want your node to also serve JSON-RPC, you can do that by setting the following flag:
|
||||
|
||||
`neoserver -rpc 4000`
|
||||
|
||||
In this case server will accept and respond JSON-RPC on port 4000. Keep in mind that currently there is only a small subset of the JSON-RPC implemented. Feel free to make a PR with more functionality.
|
||||
|
||||
### vm
|
||||
To be implemented..
|
||||
|
|
|
|||
|
|
@ -8,25 +8,36 @@ import (
|
|||
)
|
||||
|
||||
var (
|
||||
port = flag.String("port", ":3000", "port the TCP listener will listen on.")
|
||||
tcp = flag.Int("tcp", 3000, "port TCP listener will listen on.")
|
||||
seed = flag.String("seed", "", "initial seed servers.")
|
||||
net = flag.Int("net", 56753, "the mode the server will operate in.")
|
||||
rpc = flag.Int("rpc", 0, "let this server also respond to rpc calls on this port")
|
||||
)
|
||||
|
||||
// Simple dirty and quick bootstrapping for the sake of development.
|
||||
// e.g run 2 nodes:
|
||||
// neoserver -port :4000
|
||||
// neoserver -port :3000 -seed 127.0.0.1:4000
|
||||
// neoserver -tcp :4000
|
||||
// neoserver -tcp :3000 -seed 127.0.0.1:4000
|
||||
func main() {
|
||||
flag.Parse()
|
||||
|
||||
opts := network.StartOpts{
|
||||
Seeds: parseSeeds(*seed),
|
||||
TCP: *tcp,
|
||||
RPC: *rpc,
|
||||
}
|
||||
|
||||
s := network.NewServer(network.NetMode(*net))
|
||||
seeds := strings.Split(*seed, ",")
|
||||
if len(seeds) == 0 {
|
||||
seeds = []string{*seed}
|
||||
}
|
||||
if *seed == "" {
|
||||
seeds = []string{}
|
||||
}
|
||||
s.Start(*port, seeds)
|
||||
s.Start(opts)
|
||||
}
|
||||
|
||||
func parseSeeds(s string) []string {
|
||||
if len(s) == 0 {
|
||||
return nil
|
||||
}
|
||||
seeds := strings.Split(s, ",")
|
||||
if len(seeds) == 0 {
|
||||
return nil
|
||||
}
|
||||
return seeds
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,8 +1,6 @@
|
|||
package network
|
||||
|
||||
import (
|
||||
"net"
|
||||
|
||||
"github.com/anthdm/neo-go/pkg/util"
|
||||
)
|
||||
|
||||
|
|
@ -44,81 +42,3 @@ func (p *LocalPeer) id() uint32 { return p.nonce }
|
|||
func (p *LocalPeer) verack() bool { return p.isVerack }
|
||||
func (p *LocalPeer) addr() util.Endpoint { return p.endpoint }
|
||||
func (p *LocalPeer) disconnect() {}
|
||||
|
||||
// TCPPeer represents a remote node, backed by TCP transport.
|
||||
type TCPPeer struct {
|
||||
s *Server
|
||||
// nonce (id) of the peer.
|
||||
nonce uint32
|
||||
// underlying TCP connection
|
||||
conn net.Conn
|
||||
// host and port information about this peer.
|
||||
endpoint util.Endpoint
|
||||
// channel to coordinate messages writen back to the connection.
|
||||
send chan *Message
|
||||
// whether this peers version was acknowledged.
|
||||
isVerack bool
|
||||
}
|
||||
|
||||
// NewTCPPeer returns a pointer to a TCP Peer.
|
||||
func NewTCPPeer(conn net.Conn, s *Server) *TCPPeer {
|
||||
e, _ := util.EndpointFromString(conn.RemoteAddr().String())
|
||||
|
||||
return &TCPPeer{
|
||||
conn: conn,
|
||||
send: make(chan *Message),
|
||||
endpoint: e,
|
||||
s: s,
|
||||
}
|
||||
}
|
||||
|
||||
func (p *TCPPeer) callVersion(msg *Message) {
|
||||
p.send <- msg
|
||||
}
|
||||
|
||||
// id implements the peer interface
|
||||
func (p *TCPPeer) id() uint32 {
|
||||
return p.nonce
|
||||
}
|
||||
|
||||
// endpoint implements the peer interface
|
||||
func (p *TCPPeer) addr() util.Endpoint {
|
||||
return p.endpoint
|
||||
}
|
||||
|
||||
// verack implements the peer interface
|
||||
func (p *TCPPeer) verack() bool {
|
||||
return p.isVerack
|
||||
}
|
||||
|
||||
// callGetaddr will send the "getaddr" command to the remote.
|
||||
func (p *TCPPeer) callGetaddr(msg *Message) {
|
||||
p.send <- msg
|
||||
}
|
||||
|
||||
func (p *TCPPeer) disconnect() {
|
||||
close(p.send)
|
||||
p.conn.Close()
|
||||
}
|
||||
|
||||
// writeLoop writes messages to the underlying TCP connection.
|
||||
// A goroutine writeLoop is started for each connection.
|
||||
// There should be at most one writer to a connection executing
|
||||
// all writes from this goroutine.
|
||||
func (p *TCPPeer) writeLoop() {
|
||||
// clean up the connection.
|
||||
defer func() {
|
||||
p.conn.Close()
|
||||
}()
|
||||
|
||||
for {
|
||||
msg := <-p.send
|
||||
|
||||
p.s.logger.Printf("OUT :: %s :: %+v", msg.commandType(), msg.Payload)
|
||||
|
||||
// should we disconnect here?
|
||||
if err := msg.encode(p.conn); err != nil {
|
||||
p.s.logger.Printf("encode error: %s", err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
129
pkg/network/rpc.go
Normal file
129
pkg/network/rpc.go
Normal file
|
|
@ -0,0 +1,129 @@
|
|||
package network
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"net/http"
|
||||
)
|
||||
|
||||
const (
|
||||
rpcPortMainNet = 20332
|
||||
rpcPortTestNet = 10332
|
||||
rpcVersion = "2.0"
|
||||
|
||||
// error response messages
|
||||
methodNotFound = "Method not found"
|
||||
parseError = "Parse error"
|
||||
)
|
||||
|
||||
// Each NEO node has a set of optional APIs for accessing blockchain
|
||||
// data and making things easier for development of blockchain apps.
|
||||
// APIs are provided via JSON-RPC , comm at bottom layer is with http/https protocol.
|
||||
|
||||
// listenHTTP creates an ingress bridge from the outside world to the passed
|
||||
// server, by installing handlers for all the necessary RPCs to the passed mux.
|
||||
func listenHTTP(s *Server, port int) {
|
||||
api := &API{s}
|
||||
p := fmt.Sprintf(":%d", port)
|
||||
s.logger.Printf("serving RPC on %d", port)
|
||||
s.logger.Printf("%s", http.ListenAndServe(p, api))
|
||||
}
|
||||
|
||||
// API serves JSON-RPC.
|
||||
type API struct {
|
||||
s *Server
|
||||
}
|
||||
|
||||
func (s *API) ServeHTTP(w http.ResponseWriter, r *http.Request) {
|
||||
// Official nodes respond a parse error if the method is not POST.
|
||||
// Instead of returning a decent response for this, let's do the same.
|
||||
if r.Method != "POST" {
|
||||
writeError(w, 0, 0, parseError)
|
||||
}
|
||||
|
||||
var req Request
|
||||
if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
|
||||
writeError(w, 0, 0, parseError)
|
||||
return
|
||||
}
|
||||
defer r.Body.Close()
|
||||
|
||||
if req.Version != rpcVersion {
|
||||
writeJSON(w, http.StatusBadRequest, nil)
|
||||
return
|
||||
}
|
||||
|
||||
switch req.Method {
|
||||
case "getconnectioncount":
|
||||
if err := s.getConnectionCount(w, &req); err != nil {
|
||||
writeError(w, 0, 0, parseError)
|
||||
return
|
||||
}
|
||||
case "getblockcount":
|
||||
case "getbestblockhash":
|
||||
default:
|
||||
writeError(w, 0, 0, methodNotFound)
|
||||
}
|
||||
}
|
||||
|
||||
// This is an Example on how we could handle incomming RPC requests.
|
||||
func (s *API) getConnectionCount(w http.ResponseWriter, req *Request) error {
|
||||
count := s.s.peerCount()
|
||||
|
||||
resp := ConnectionCountResponse{
|
||||
Version: rpcVersion,
|
||||
Result: count,
|
||||
ID: 1,
|
||||
}
|
||||
|
||||
return writeJSON(w, http.StatusOK, resp)
|
||||
}
|
||||
|
||||
// writeError returns a JSON error with given parameters. All error HTTP
|
||||
// status codes are 200. According to the official API.
|
||||
func writeError(w http.ResponseWriter, id, code int, msg string) error {
|
||||
resp := RequestError{
|
||||
Version: rpcVersion,
|
||||
ID: id,
|
||||
Error: Error{
|
||||
Code: code,
|
||||
Message: msg,
|
||||
},
|
||||
}
|
||||
|
||||
return writeJSON(w, http.StatusOK, resp)
|
||||
}
|
||||
|
||||
func writeJSON(w http.ResponseWriter, status int, v interface{}) error {
|
||||
w.Header().Set("Content-Type", "application/json")
|
||||
w.WriteHeader(status)
|
||||
return json.NewEncoder(w).Encode(v)
|
||||
}
|
||||
|
||||
// Request is an object received through JSON-RPC from the client.
|
||||
type Request struct {
|
||||
Version string `json:"jsonrpc"`
|
||||
Method string `json:"method"`
|
||||
Params []string `json:"params"`
|
||||
ID int `json:"id"`
|
||||
}
|
||||
|
||||
// ConnectionCountResponse ..
|
||||
type ConnectionCountResponse struct {
|
||||
Version string `json:"jsonrpc"`
|
||||
Result int `json:"result"`
|
||||
ID int `json:"id"`
|
||||
}
|
||||
|
||||
// RequestError ..
|
||||
type RequestError struct {
|
||||
Version string `json:"jsonrpc"`
|
||||
ID int `json:"id"`
|
||||
Error Error `json:"error"`
|
||||
}
|
||||
|
||||
// Error holds information about an RCP error.
|
||||
type Error struct {
|
||||
Code int `json:"code"`
|
||||
Message string `json:"message"`
|
||||
}
|
||||
|
|
@ -5,7 +5,6 @@ import (
|
|||
"log"
|
||||
"net"
|
||||
"os"
|
||||
"strconv"
|
||||
"time"
|
||||
|
||||
"github.com/anthdm/neo-go/pkg/network/payload"
|
||||
|
|
@ -53,12 +52,8 @@ type Server struct {
|
|||
relay bool
|
||||
// TCP listener of the server
|
||||
listener net.Listener
|
||||
|
||||
// RPC channels
|
||||
versionCh chan versionTuple
|
||||
getaddrCh chan getaddrTuple
|
||||
invCh chan invTuple
|
||||
addrCh chan addrTuple
|
||||
// channel for safely responding the number of current connected peers.
|
||||
peerCountCh chan peerCount
|
||||
}
|
||||
|
||||
// NewServer returns a pointer to a new server.
|
||||
|
|
@ -70,32 +65,26 @@ func NewServer(net NetMode) *Server {
|
|||
}
|
||||
|
||||
s := &Server{
|
||||
id: util.RandUint32(1111111, 9999999),
|
||||
userAgent: fmt.Sprintf("/NEO:%s/", version),
|
||||
logger: logger,
|
||||
peers: make(map[Peer]bool),
|
||||
register: make(chan Peer),
|
||||
unregister: make(chan Peer),
|
||||
message: make(chan messageTuple),
|
||||
relay: true, // currently relay is not handled.
|
||||
net: net,
|
||||
quit: make(chan struct{}),
|
||||
versionCh: make(chan versionTuple),
|
||||
getaddrCh: make(chan getaddrTuple),
|
||||
invCh: make(chan invTuple),
|
||||
addrCh: make(chan addrTuple),
|
||||
id: util.RandUint32(1111111, 9999999),
|
||||
userAgent: fmt.Sprintf("/NEO:%s/", version),
|
||||
logger: logger,
|
||||
peers: make(map[Peer]bool),
|
||||
register: make(chan Peer),
|
||||
unregister: make(chan Peer),
|
||||
message: make(chan messageTuple),
|
||||
relay: true, // currently relay is not handled.
|
||||
net: net,
|
||||
quit: make(chan struct{}),
|
||||
peerCountCh: make(chan peerCount),
|
||||
}
|
||||
|
||||
return s
|
||||
}
|
||||
|
||||
// Start run's the server.
|
||||
func (s *Server) Start(port string, seeds []string) {
|
||||
p, err := strconv.Atoi(port[1:len(port)])
|
||||
if err != nil {
|
||||
s.logger.Fatalf("could not convert port to integer: %s", err)
|
||||
}
|
||||
s.port = uint16(p)
|
||||
// TODO: server should be initialized with a config.
|
||||
func (s *Server) Start(opts StartOpts) {
|
||||
s.port = uint16(opts.TCP)
|
||||
|
||||
fmt.Println(logo())
|
||||
fmt.Println(string(s.userAgent))
|
||||
|
|
@ -103,10 +92,14 @@ func (s *Server) Start(port string, seeds []string) {
|
|||
s.logger.Printf("NET: %s - TCP: %d - RELAY: %v - ID: %d",
|
||||
s.net, int(s.port), s.relay, s.id)
|
||||
|
||||
go listenTCP(s, port)
|
||||
go listenTCP(s, opts.TCP)
|
||||
|
||||
if len(seeds) > 0 {
|
||||
connectToSeeds(s, seeds)
|
||||
if opts.RPC > 0 {
|
||||
go listenHTTP(s, opts.RPC)
|
||||
}
|
||||
|
||||
if len(opts.Seeds) > 0 {
|
||||
connectToSeeds(s, opts.Seeds)
|
||||
}
|
||||
|
||||
s.loop()
|
||||
|
|
@ -147,44 +140,8 @@ func (s *Server) loop() {
|
|||
s.logger.Printf("peer %s disconnected", peer.addr())
|
||||
}
|
||||
|
||||
// Process the received version and respond with a verack.
|
||||
case t := <-s.versionCh:
|
||||
if s.id == t.request.Nonce {
|
||||
t.peer.disconnect()
|
||||
}
|
||||
if t.peer.addr().Port != t.request.Port {
|
||||
t.peer.disconnect()
|
||||
}
|
||||
t.response <- newMessage(ModeDevNet, cmdVerack, nil)
|
||||
|
||||
// Process the getaddr cmd.
|
||||
case t := <-s.getaddrCh:
|
||||
t.response <- &Message{} // just for now.
|
||||
|
||||
// Process the addr cmd. Register peer will handle the maxPeers connected.
|
||||
case t := <-s.addrCh:
|
||||
for _, addr := range t.request.Addrs {
|
||||
if !s.peerAlreadyConnected(addr.Addr) {
|
||||
// TODO: this is not transport abstracted.
|
||||
go connectToRemoteNode(s, addr.Addr.String())
|
||||
}
|
||||
}
|
||||
t.response <- true
|
||||
|
||||
// Process inventories cmd.
|
||||
case t := <-s.invCh:
|
||||
if !t.request.Type.Valid() {
|
||||
t.peer.disconnect()
|
||||
break
|
||||
}
|
||||
if len(t.request.Hashes) == 0 {
|
||||
t.peer.disconnect()
|
||||
break
|
||||
}
|
||||
|
||||
payload := payload.NewInventory(t.request.Type, t.request.Hashes)
|
||||
msg := newMessage(s.net, cmdGetData, payload)
|
||||
t.response <- msg
|
||||
case t := <-s.peerCountCh:
|
||||
t.count <- len(s.peers)
|
||||
|
||||
case <-s.quit:
|
||||
s.shutdown()
|
||||
|
|
@ -202,73 +159,47 @@ func (s *Server) handlePeerConnected(p Peer) {
|
|||
p.callVersion(msg)
|
||||
}
|
||||
|
||||
type versionTuple struct {
|
||||
peer Peer
|
||||
request *payload.Version
|
||||
response chan *Message
|
||||
}
|
||||
|
||||
func (s *Server) handleVersionCmd(msg *Message, p Peer) *Message {
|
||||
t := versionTuple{
|
||||
peer: p,
|
||||
request: msg.Payload.(*payload.Version),
|
||||
response: make(chan *Message),
|
||||
version := msg.Payload.(*payload.Version)
|
||||
if s.id == version.Nonce {
|
||||
p.disconnect()
|
||||
return nil
|
||||
}
|
||||
|
||||
s.versionCh <- t
|
||||
|
||||
return <-t.response
|
||||
}
|
||||
|
||||
type getaddrTuple struct {
|
||||
peer Peer
|
||||
request *Message
|
||||
response chan *Message
|
||||
if p.addr().Port != version.Port {
|
||||
p.disconnect()
|
||||
return nil
|
||||
}
|
||||
return newMessage(ModeDevNet, cmdVerack, nil)
|
||||
}
|
||||
|
||||
func (s *Server) handleGetaddrCmd(msg *Message, p Peer) *Message {
|
||||
t := getaddrTuple{
|
||||
peer: p,
|
||||
request: msg,
|
||||
response: make(chan *Message),
|
||||
}
|
||||
|
||||
s.getaddrCh <- t
|
||||
|
||||
return <-t.response
|
||||
}
|
||||
|
||||
type invTuple struct {
|
||||
peer Peer
|
||||
request *payload.Inventory
|
||||
response chan *Message
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *Server) handleInvCmd(msg *Message, p Peer) *Message {
|
||||
t := invTuple{
|
||||
request: msg.Payload.(*payload.Inventory),
|
||||
response: make(chan *Message),
|
||||
inv := msg.Payload.(*payload.Inventory)
|
||||
if !inv.Type.Valid() {
|
||||
p.disconnect()
|
||||
return nil
|
||||
}
|
||||
if len(inv.Hashes) == 0 {
|
||||
p.disconnect()
|
||||
return nil
|
||||
}
|
||||
|
||||
s.invCh <- t
|
||||
|
||||
return <-t.response
|
||||
payload := payload.NewInventory(inv.Type, inv.Hashes)
|
||||
resp := newMessage(s.net, cmdGetData, payload)
|
||||
return resp
|
||||
}
|
||||
|
||||
type addrTuple struct {
|
||||
request *payload.AddressList
|
||||
response chan bool
|
||||
}
|
||||
|
||||
func (s *Server) handleAddrCmd(msg *Message, p Peer) bool {
|
||||
t := addrTuple{
|
||||
request: msg.Payload.(*payload.AddressList),
|
||||
response: make(chan bool),
|
||||
func (s *Server) handleAddrCmd(msg *Message, p Peer) {
|
||||
addrList := msg.Payload.(*payload.AddressList)
|
||||
for _, addr := range addrList.Addrs {
|
||||
if !s.peerAlreadyConnected(addr.Addr) {
|
||||
// TODO: this is not transport abstracted.
|
||||
go connectToRemoteNode(s, addr.Addr.String())
|
||||
}
|
||||
}
|
||||
|
||||
s.addrCh <- t
|
||||
|
||||
return <-t.response
|
||||
}
|
||||
|
||||
// check if the addr is already connected to the server.
|
||||
|
|
@ -283,6 +214,7 @@ func (s *Server) peerAlreadyConnected(addr net.Addr) bool {
|
|||
|
||||
func (s *Server) sendLoop(peer Peer) {
|
||||
// TODO: check if this peer is still connected.
|
||||
// dont keep asking (maxPeers and no new nodes)
|
||||
for {
|
||||
getaddrMsg := newMessage(s.net, cmdGetAddr, nil)
|
||||
peer.callGetaddr(getaddrMsg)
|
||||
|
|
@ -291,6 +223,31 @@ func (s *Server) sendLoop(peer Peer) {
|
|||
}
|
||||
}
|
||||
|
||||
type peerCount struct {
|
||||
count chan int
|
||||
}
|
||||
|
||||
// peerCount returns the number of connected peers to this server.
|
||||
func (s *Server) peerCount() int {
|
||||
ch := peerCount{
|
||||
count: make(chan int),
|
||||
}
|
||||
|
||||
s.peerCountCh <- ch
|
||||
|
||||
return <-ch.count
|
||||
}
|
||||
|
||||
// StartOpts holds the server configuration.
|
||||
type StartOpts struct {
|
||||
// tcp port
|
||||
TCP int
|
||||
// slice of peer addresses the server will connect to
|
||||
Seeds []string
|
||||
// JSON-RPC port. If 0 no RPC handler will be attached.
|
||||
RPC int
|
||||
}
|
||||
|
||||
func logo() string {
|
||||
return `
|
||||
_ ____________ __________
|
||||
|
|
|
|||
|
|
@ -24,6 +24,20 @@ func TestHandleVersion(t *testing.T) {
|
|||
}
|
||||
}
|
||||
|
||||
func TestPeerCount(t *testing.T) {
|
||||
s := NewServer(ModeDevNet)
|
||||
go s.loop()
|
||||
|
||||
lenPeers := 10
|
||||
for i := 0; i < lenPeers; i++ {
|
||||
s.register <- NewLocalPeer(s)
|
||||
}
|
||||
|
||||
if have, want := s.peerCount(), lenPeers; want != have {
|
||||
t.Fatalf("expected %d connected peers got %d", want, have)
|
||||
}
|
||||
}
|
||||
|
||||
func TestHandleAddrCmd(t *testing.T) {
|
||||
// todo
|
||||
}
|
||||
|
|
|
|||
|
|
@ -2,13 +2,15 @@ package network
|
|||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"net"
|
||||
|
||||
"github.com/anthdm/neo-go/pkg/network/payload"
|
||||
"github.com/anthdm/neo-go/pkg/util"
|
||||
)
|
||||
|
||||
func listenTCP(s *Server, port string) error {
|
||||
ln, err := net.Listen("tcp", port)
|
||||
func listenTCP(s *Server, port int) error {
|
||||
ln, err := net.Listen("tcp", fmt.Sprintf(":%d", port))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
|
@ -73,10 +75,11 @@ func handleConnection(s *Server, conn net.Conn) {
|
|||
}
|
||||
}
|
||||
|
||||
// handleMessage hands the message received from a TCP connection over to the server.
|
||||
func handleMessage(msg *Message, s *Server, p *TCPPeer) {
|
||||
command := msg.commandType()
|
||||
|
||||
s.logger.Printf("%d :: IN :: %s :: %v", p.id(), command, msg)
|
||||
s.logger.Printf("IN :: %d :: %s :: %v", p.id(), command, msg)
|
||||
|
||||
switch command {
|
||||
case cmdVersion:
|
||||
|
|
@ -103,3 +106,82 @@ func handleMessage(msg *Message, s *Server, p *TCPPeer) {
|
|||
default:
|
||||
}
|
||||
}
|
||||
|
||||
// TCPPeer represents a remote node, backed by TCP transport.
|
||||
type TCPPeer struct {
|
||||
s *Server
|
||||
// nonce (id) of the peer.
|
||||
nonce uint32
|
||||
// underlying TCP connection
|
||||
conn net.Conn
|
||||
// host and port information about this peer.
|
||||
endpoint util.Endpoint
|
||||
// channel to coordinate messages writen back to the connection.
|
||||
send chan *Message
|
||||
// whether this peers version was acknowledged.
|
||||
isVerack bool
|
||||
}
|
||||
|
||||
// NewTCPPeer returns a pointer to a TCP Peer.
|
||||
func NewTCPPeer(conn net.Conn, s *Server) *TCPPeer {
|
||||
e, _ := util.EndpointFromString(conn.RemoteAddr().String())
|
||||
|
||||
return &TCPPeer{
|
||||
conn: conn,
|
||||
send: make(chan *Message),
|
||||
endpoint: e,
|
||||
s: s,
|
||||
}
|
||||
}
|
||||
|
||||
func (p *TCPPeer) callVersion(msg *Message) {
|
||||
p.send <- msg
|
||||
}
|
||||
|
||||
// id implements the peer interface
|
||||
func (p *TCPPeer) id() uint32 {
|
||||
return p.nonce
|
||||
}
|
||||
|
||||
// endpoint implements the peer interface
|
||||
func (p *TCPPeer) addr() util.Endpoint {
|
||||
return p.endpoint
|
||||
}
|
||||
|
||||
// verack implements the peer interface
|
||||
func (p *TCPPeer) verack() bool {
|
||||
return p.isVerack
|
||||
}
|
||||
|
||||
// callGetaddr will send the "getaddr" command to the remote.
|
||||
func (p *TCPPeer) callGetaddr(msg *Message) {
|
||||
p.send <- msg
|
||||
}
|
||||
|
||||
// disconnect closes the send channel and the underlying connection.
|
||||
func (p *TCPPeer) disconnect() {
|
||||
close(p.send)
|
||||
p.conn.Close()
|
||||
}
|
||||
|
||||
// writeLoop writes messages to the underlying TCP connection.
|
||||
// A goroutine writeLoop is started for each connection.
|
||||
// There should be at most one writer to a connection executing
|
||||
// all writes from this goroutine.
|
||||
func (p *TCPPeer) writeLoop() {
|
||||
// clean up the connection.
|
||||
defer func() {
|
||||
p.conn.Close()
|
||||
}()
|
||||
|
||||
for {
|
||||
msg := <-p.send
|
||||
|
||||
p.s.logger.Printf("OUT :: %s :: %+v", msg.commandType(), msg.Payload)
|
||||
|
||||
// should we disconnect here?
|
||||
if err := msg.encode(p.conn); err != nil {
|
||||
p.s.logger.Printf("encode error: %s", err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue