123 lines
2.2 KiB
Go
Executable File
123 lines
2.2 KiB
Go
Executable File
package connection
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import (
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"encoding/hex"
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"time"
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"github.com/gorilla/websocket"
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)
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var upgrader = websocket.Upgrader{
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ReadBufferSize: 1024,
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WriteBufferSize: 1024,
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}
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// Connection track websocket and faciliates in and out data
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type Connection struct {
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connectionTable *Table
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// The websocket connection.
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conn *websocket.Conn
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// Buffered channel of outbound messages.
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send chan []byte
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// Address of the Remote End Point
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source string
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// bytes in
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bytesIn int64
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// bytes out
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bytesOut int64
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}
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//NewConnection -- Constructor
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func NewConnection(connectionTable *Table, conn *websocket.Conn, remoteAddress string) (p *Connection) {
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p = new(Connection)
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p.connectionTable = connectionTable
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p.conn = conn
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p.source = remoteAddress
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p.bytesIn = 0
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p.bytesOut = 0
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p.send = make(chan []byte, 256)
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return
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}
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func (c *Connection) addIn(num int64) {
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c.bytesIn = c.bytesIn + num
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}
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func (c *Connection) addOut(num int64) {
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c.bytesOut = c.bytesOut + num
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}
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//ConnectionTable -- property
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func (c *Connection) ConnectionTable() (table *Table) {
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table = c.connectionTable
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return
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}
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//Reader -- export the reader function
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func (c *Connection) Reader() {
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defer func() {
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c.connectionTable.unregister <- c
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c.conn.Close()
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}()
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c.conn.SetReadLimit(1024)
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for {
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_, message, err := c.conn.ReadMessage()
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if err != nil {
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if websocket.IsUnexpectedCloseError(err, websocket.CloseGoingAway) {
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loginfo.Printf("error: %v", err)
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}
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break
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}
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loginfo.Println(hex.Dump(message))
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c.addIn(int64(len(message)))
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loginfo.Println(c)
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}
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}
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//Writer -- expoer the writer function
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func (c *Connection) Writer() {
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dwell := time.NewTicker(5 * time.Second)
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loginfo.Println("activate timer", dwell)
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defer func() {
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c.conn.Close()
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}()
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for {
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select {
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case message := <-c.send:
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w, err := c.conn.NextWriter(websocket.TextMessage)
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if err != nil {
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return
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}
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w.Write(message)
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if err := w.Close(); err != nil {
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return
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}
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c.addOut(int64(len(message)))
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}
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}
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}
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func (c *Connection) sender() {
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dwell := time.NewTicker(5 * time.Second)
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loginfo.Println("activate timer", dwell)
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defer func() {
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c.conn.Close()
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}()
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for {
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select {
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case <-dwell.C:
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loginfo.Println("Dwell Activated")
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c.send <- []byte("This is a test")
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}
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}
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}
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