51 lines
1.0 KiB
Go
51 lines
1.0 KiB
Go
package coordinator
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import (
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"log"
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"net/http"
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"github.com/gorilla/websocket"
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)
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var upgrader = websocket.Upgrader{} // use default options
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func Serve(c *Coordinator) {
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http.HandleFunc("/ws", func(w http.ResponseWriter, r *http.Request) {
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serveWs(c, w, r)
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})
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err := http.ListenAndServe(":7636", nil)
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if err != nil {
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log.Fatal("ListenAndServe: ", err)
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}
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}
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func serveWs(c *Coordinator, w http.ResponseWriter, r *http.Request) {
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// Upgrade our raw HTTP connection to a websocket based one
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conn, err := upgrader.Upgrade(w, r, nil)
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if err != nil {
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log.Print("Error during connection upgradation:", err)
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return
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}
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defer conn.Close()
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// The event loop
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for {
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var cmd SessionCommand
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err := conn.ReadJSON(&cmd)
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if err != nil {
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log.Println("Error during message reading:", err)
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break
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}
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log.Printf("Received: %s", cmd)
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resp := c.Coordinate(&cmd)
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err = conn.WriteJSON(resp)
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if err != nil {
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log.Println("Error during message writing:", err)
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break
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}
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if resp.Result == SessionRespLeft {
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break
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}
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}
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}
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