aboutsummaryrefslogtreecommitdiffstats
path: root/websocket
diff options
context:
space:
mode:
authorFelix Lange <fjl@twurst.com>2014-10-23 21:01:27 +0800
committerFelix Lange <fjl@twurst.com>2014-10-23 21:01:27 +0800
commit69baa465ea69ae60eed802445cf0132b9eb69934 (patch)
treeb09da7582b5c4850d4db13aee808f2fef2f97de0 /websocket
parent50fd46924900869e7210217c6a07979b544991c8 (diff)
parentfeef194829b07570e91873ed5d1e8cc51e8fa430 (diff)
downloadgo-tangerine-69baa465ea69ae60eed802445cf0132b9eb69934.tar
go-tangerine-69baa465ea69ae60eed802445cf0132b9eb69934.tar.gz
go-tangerine-69baa465ea69ae60eed802445cf0132b9eb69934.tar.bz2
go-tangerine-69baa465ea69ae60eed802445cf0132b9eb69934.tar.lz
go-tangerine-69baa465ea69ae60eed802445cf0132b9eb69934.tar.xz
go-tangerine-69baa465ea69ae60eed802445cf0132b9eb69934.tar.zst
go-tangerine-69baa465ea69ae60eed802445cf0132b9eb69934.zip
Merge eth-go repository into go-ethereum
mist, etheruem have been moved to cmd/
Diffstat (limited to 'websocket')
-rw-r--r--websocket/client.go122
-rw-r--r--websocket/message.go14
-rw-r--r--websocket/server.go127
3 files changed, 263 insertions, 0 deletions
diff --git a/websocket/client.go b/websocket/client.go
new file mode 100644
index 000000000..1ff0d3f64
--- /dev/null
+++ b/websocket/client.go
@@ -0,0 +1,122 @@
+package websocket
+
+import (
+ "fmt"
+ "io"
+
+ ws "code.google.com/p/go.net/websocket"
+)
+
+const channelBufSize = 100
+
+var maxId int = 0
+
+type MsgFunc func(c *Client, msg *Message)
+
+// Chat client.
+type Client struct {
+ id int
+ ws *ws.Conn
+ server *Server
+ ch chan *Message
+ doneCh chan bool
+
+ onMessage MsgFunc
+}
+
+// Create new chat client.
+func NewClient(ws *ws.Conn, server *Server) *Client {
+
+ if ws == nil {
+ panic("ws cannot be nil")
+ }
+
+ if server == nil {
+ panic("server cannot be nil")
+ }
+
+ maxId++
+ ch := make(chan *Message, channelBufSize)
+ doneCh := make(chan bool)
+
+ return &Client{maxId, ws, server, ch, doneCh, nil}
+}
+
+func (c *Client) Id() int {
+ return c.id
+}
+
+func (c *Client) Conn() *ws.Conn {
+ return c.ws
+}
+
+func (c *Client) Write(data interface{}, seed int) {
+ msg := &Message{Seed: seed, Data: data}
+ select {
+ case c.ch <- msg:
+ default:
+ c.server.Del(c)
+ err := fmt.Errorf("client %d is disconnected.", c.id)
+ c.server.Err(err)
+ }
+}
+
+func (c *Client) Done() {
+ c.doneCh <- true
+}
+
+// Listen Write and Read request via chanel
+func (c *Client) Listen() {
+ go c.listenWrite()
+ c.listenRead()
+}
+
+// Listen write request via chanel
+func (c *Client) listenWrite() {
+ logger.Debugln("Listening write to client")
+ for {
+ select {
+
+ // send message to the client
+ case msg := <-c.ch:
+ logger.Debugln("Send:", msg)
+ ws.JSON.Send(c.ws, msg)
+
+ // receive done request
+ case <-c.doneCh:
+ c.server.Del(c)
+ c.doneCh <- true // for listenRead method
+ return
+ }
+ }
+}
+
+// Listen read request via chanel
+func (c *Client) listenRead() {
+ logger.Debugln("Listening read from client")
+ for {
+ select {
+
+ // receive done request
+ case <-c.doneCh:
+ c.server.Del(c)
+ c.doneCh <- true // for listenWrite method
+ return
+
+ // read data from ws connection
+ default:
+ var msg Message
+ err := ws.JSON.Receive(c.ws, &msg)
+ if err == io.EOF {
+ c.doneCh <- true
+ } else if err != nil {
+ c.server.Err(err)
+ } else {
+ logger.Debugln(&msg)
+ if c.onMessage != nil {
+ c.onMessage(c, &msg)
+ }
+ }
+ }
+ }
+}
diff --git a/websocket/message.go b/websocket/message.go
new file mode 100644
index 000000000..67289c4c4
--- /dev/null
+++ b/websocket/message.go
@@ -0,0 +1,14 @@
+package websocket
+
+import "github.com/ethereum/go-ethereum/ethutil"
+
+type Message struct {
+ Call string `json:"call"`
+ Args []interface{} `json:"args"`
+ Seed int `json:"seed"`
+ Data interface{} `json:"data"`
+}
+
+func (self *Message) Arguments() *ethutil.Value {
+ return ethutil.NewValue(self.Args)
+}
diff --git a/websocket/server.go b/websocket/server.go
new file mode 100644
index 000000000..1b4c00433
--- /dev/null
+++ b/websocket/server.go
@@ -0,0 +1,127 @@
+package websocket
+
+import (
+ "net/http"
+
+ "github.com/ethereum/go-ethereum/ethlog"
+
+ ws "code.google.com/p/go.net/websocket"
+)
+
+var logger = ethlog.NewLogger("WS")
+
+// Chat server.
+type Server struct {
+ httpServ string
+ pattern string
+ messages []*Message
+ clients map[int]*Client
+ addCh chan *Client
+ delCh chan *Client
+ sendAllCh chan string
+ doneCh chan bool
+ errCh chan error
+ msgFunc MsgFunc
+}
+
+// Create new chat server.
+func NewServer(pattern, httpServ string) *Server {
+ clients := make(map[int]*Client)
+ addCh := make(chan *Client)
+ delCh := make(chan *Client)
+ sendAllCh := make(chan string)
+ doneCh := make(chan bool)
+ errCh := make(chan error)
+
+ return &Server{
+ httpServ,
+ pattern,
+ nil,
+ clients,
+ addCh,
+ delCh,
+ sendAllCh,
+ doneCh,
+ errCh,
+ nil,
+ }
+}
+
+func (s *Server) Add(c *Client) {
+ s.addCh <- c
+}
+
+func (s *Server) Del(c *Client) {
+ s.delCh <- c
+}
+
+func (s *Server) SendAll(msg string) {
+ s.sendAllCh <- msg
+}
+
+func (s *Server) Done() {
+ s.doneCh <- true
+}
+
+func (s *Server) Err(err error) {
+ s.errCh <- err
+}
+
+func (s *Server) servHTTP() {
+ logger.Debugln("Serving http", s.httpServ)
+ err := http.ListenAndServe(s.httpServ, nil)
+
+ logger.Warnln(err)
+}
+
+func (s *Server) MessageFunc(f MsgFunc) {
+ s.msgFunc = f
+}
+
+// Listen and serve.
+// It serves client connection and broadcast request.
+func (s *Server) Listen() {
+ logger.Debugln("Listening server...")
+
+ // ws handler
+ onConnected := func(ws *ws.Conn) {
+ defer func() {
+ err := ws.Close()
+ if err != nil {
+ s.errCh <- err
+ }
+ }()
+
+ client := NewClient(ws, s)
+ client.onMessage = s.msgFunc
+ s.Add(client)
+ client.Listen()
+ }
+ // Disable Origin check. Request don't need to come necessarily from origin.
+ http.HandleFunc(s.pattern, func(w http.ResponseWriter, req *http.Request) {
+ s := ws.Server{Handler: ws.Handler(onConnected)}
+ s.ServeHTTP(w, req)
+ })
+ logger.Debugln("Created handler")
+
+ go s.servHTTP()
+
+ for {
+ select {
+
+ // Add new a client
+ case c := <-s.addCh:
+ s.clients[c.id] = c
+
+ // del a client
+ case c := <-s.delCh:
+ delete(s.clients, c.id)
+
+ case err := <-s.errCh:
+ logger.Debugln("Error:", err.Error())
+
+ case <-s.doneCh:
+ return
+ }
+ }
+}