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HomeBackend DevelopmentGolangHow to use Golang to build a WebSocket server that supports STOMP protocol?

How to use Golang to build a WebSocket server that supports STOMP protocol?

Golang Build STOMP over WebSocket Server Guide

The combination of WebSocket and STOMP protocols is widely used in real-time communication. This article will guide you to build a WebSocket server that supports STOMP protocol using Golang and explore how to overcome the problem of insufficient documentation of the go-stomp library.

background

Many developers have found that go-stomp library lacks well-developed documentation and examples, which poses challenges to server-side implementation.

Solution

Due to insufficient documentation of go-stomp library, we need to explore its applicability and consider other solutions.

  1. Evaluate go-stomp : Double-check the code of the go-stomp library for signs of WebSocket server-side implementation, such as examples or test code.

  2. Alternative: If go-stomp does not apply, consider the following alternatives:

    • Gorilla WebSocket: The popular WebSocket library that can be used in conjunction with any messaging protocol, including STOMP.
    • go-stomp-client: Although it is a client library, it can be integrated with custom WebSocket servers.
    • Centrifugo: A mature real-time messaging server, natively supports STOMP and WebSocket.
  3. Sample implementation (using Gorilla WebSocket and go-stomp-client):

    The following example demonstrates how to build a simple server in conjunction with Gorilla WebSocket and go-stomp-client :

     package main
    
    import (
        "fmt"
        "log"
        "net/http"
    
        "github.com/gorilla/websocket"
        "github.com/go-stomp/stomp"
    )
    
    var upgrader = websocket.Upgrade{}
    
    func wsEndpoint(w http.ResponseWriter, r *http.Request) {
        conn, err := upgrader.Upgrade(w, r, nil)
        if err != nil {
            log.Println("WebSocket upgrade error:", err)
            Return
        }
        defer conn.Close()
    
        stompConn, err := stomp.Dial("tcp", "localhost:61613") // Replace with your STOMP server address if err != nil {
            log.Println("STOMP connection error:", err)
            Return
        }
        defer stompConn.Disconnect()
    
        go handleWebSocketMessages(conn, stompConn)
    }
    
    func handleWebSocketMessages(wsConn *websocket.Conn, stompConn *stomp.Conn) {
        for {
            _, msg, err := wsConn.ReadMessage()
            if err != nil {
                log.Println("WebSocket read error:", err)
                break
            }
            err = stompConn.Send("/queue/messages", "", msg) // Replace with your STOMP destination if err != nil {
                log.Println("STOMP send error:", err)
            }
        }
    }
    
    func main() {
        http.HandleFunc("/ws", wsEndpoint)
        log.Println("Server listening on :8080")
        log.Fatal(http.ListenAndServe(":8080", nil))
    }

    Note: This example requires the installation of github.com/gorilla/websocket and github.com/go-stomp/stomp libraries. Please replace the STOMP server address and destination with your actual configuration.

in conclusion

Although the documentation for the go-stomp library may be insufficient, through code analysis and combined with other mature Golang libraries, we can successfully build a fully functional STOMP over WebSocket server. Select the right library and refer to the provided sample code to enable your real-time communication application easily.

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