Changes to be committed:

modified:   cmd/pmomusic/main.go
	new file:   internal/netutils/ip_detect.go
	new file:   internal/netutils/list_all_ip.go
	modified:   internal/soap/soap.go
	modified:   internal/ssdp/responder.go
	modified:   internal/ssdp/ssdp.go
	modified:   internal/upnp/http.go
	new file:   internal/upnp/server.go
	new file:   internal/upnp/xml/AVTransport.xml
	new file:   internal/upnp/xml/ConnectionManager.xml
	new file:   internal/upnp/xml/RenderingControl.xml

cmd/pmomusic/main.go

@@ -3,12 +3,18 @@ package main
 import (
 	"log"
 
+	"gargoton.petite-maison-orange.fr/eric/pmomusic/internal/netutils"
 	"gargoton.petite-maison-orange.fr/eric/pmomusic/internal/ssdp"
 	"gargoton.petite-maison-orange.fr/eric/pmomusic/internal/upnp"
 )
 
 func main() {
-	localIP := ssdp.GetLocalIP()
+	localIP, err := netutils.GuessLocalIP()
+
+	if err != nil {
+		log.Fatalf("Could not guess local IP: %v", err)
+	}
+
 	location := "http://" + localIP + ":1400/description.xml"
 	usn := "uuid:pmomusic-renderer-001"
 
@@ -18,5 +24,5 @@ func main() {
 
 	// Lance le serveur HTTP
 	log.Println("Starting HTTP server at:", location)
-	upnp.StartHTTPServer(usn)
+	upnp.StartHTTPServer(usn, localIP, 1400)
 }

internal/netutils/ip_detect.go

@@ -0,0 +1,92 @@
+package netutils
+
+import (
+	"errors"
+	"net"
+	"sort"
+	"strings"
+)
+
+// GuessLocalIP returns the best-guess local IP address usable for UPnP location,
+// in order of preference: eth0 > en* > wl* > any private, non-loopback IP.
+func GuessLocalIP() (string, error) {
+	ifaces, err := net.Interfaces()
+	if err != nil {
+		return "", err
+	}
+
+	type scoredIP struct {
+		ip    net.IP
+		score int
+	}
+
+	var candidates []scoredIP
+
+	for _, iface := range ifaces {
+		// Skip interfaces that are down or loopback
+		if iface.Flags&net.FlagUp == 0 || iface.Flags&net.FlagLoopback != 0 {
+			continue
+		}
+
+		addrs, err := iface.Addrs()
+		if err != nil {
+			continue
+		}
+
+		for _, addr := range addrs {
+			var ip net.IP
+
+			switch v := addr.(type) {
+			case *net.IPNet:
+				ip = v.IP
+			case *net.IPAddr:
+				ip = v.IP
+			}
+
+			// Skip non-IPv4 or non-private addresses
+			if ip == nil || ip.IsLoopback() || ip.To4() == nil || !isPrivateIPv4(ip) {
+				continue
+			}
+
+			score := scoreInterfaceName(iface.Name)
+			candidates = append(candidates, scoredIP{ip: ip, score: score})
+		}
+	}
+
+	if len(candidates) == 0 {
+		return "", errors.New("no suitable local IP found")
+	}
+
+	// Prefer interfaces with higher score
+	sort.SliceStable(candidates, func(i, j int) bool {
+		return candidates[i].score > candidates[j].score
+	})
+
+	return candidates[0].ip.String(), nil
+}
+
+func isPrivateIPv4(ip net.IP) bool {
+	private := []string{
+		"10.", "172.16.", "172.17.", "172.18.", "172.19.", "172.2", "192.168.",
+	}
+	ipStr := ip.String()
+	for _, p := range private {
+		if strings.HasPrefix(ipStr, p) {
+			return true
+		}
+	}
+	return false
+}
+
+func scoreInterfaceName(name string) int {
+	switch {
+	case name == "eth0":
+		return 100
+	case strings.HasPrefix(name, "en"):
+		return 80
+	case name == "wlan0" || strings.HasPrefix(name, "wl"):
+		return 60
+	default:
+		return 10
+	}
+}

internal/netutils/list_all_ip.go

@@ -0,0 +1,49 @@
+package netutils
+
+import (
+	"net"
+)
+
+// ListAllIPs returns a map of interface names to their associated IPv4 addresses.
+func ListAllIPs() map[string][]string {
+	result := make(map[string][]string)
+
+	ifaces, err := net.Interfaces()
+	if err != nil {
+		result["error"] = []string{err.Error()}
+		return result
+	}
+
+	for _, iface := range ifaces {
+		if iface.Flags&net.FlagUp == 0 {
+			continue // Ignore down interfaces
+		}
+
+		addrs, err := iface.Addrs()
+		if err != nil {
+			continue
+		}
+
+		var ips []string
+		for _, addr := range addrs {
+			var ip net.IP
+			switch v := addr.(type) {
+			case *net.IPNet:
+				ip = v.IP
+			case *net.IPAddr:
+				ip = v.IP
+			}
+
+			if ip == nil || ip.To4() == nil || ip.IsLoopback() {
+				continue
+			}
+			ips = append(ips, ip.String())
+		}
+
+		if len(ips) > 0 {
+			result[iface.Name] = ips
+		}
+	}
+
+	return result
+}

internal/soap/soap.go

@@ -1,18 +1,69 @@
 package soap
 
 import (
+	"bytes"
+	"encoding/xml"
 	"io"
 	"log"
 	"net/http"
 )
 
 func HandleSOAP(w http.ResponseWriter, r *http.Request) {
-	action := r.Header.Get("SOAPACTION")
-	body, _ := io.ReadAll(r.Body)
+	body, err := io.ReadAll(r.Body)
+	if err != nil {
+		log.Println("Failed to read SOAP request:", err)
+		http.Error(w, "Invalid request", http.StatusBadRequest)
+		return
+	}
+	defer r.Body.Close()
 
-	log.Println("----------")
-	log.Println("SOAPAction:", action)
-	log.Println("Body:\n", string(body))
+	log.Println("Received SOAP request:")
+	log.Println(string(body))
 
+	// Extract action name from the SOAP body
+	action := extractSOAPAction(body)
+	log.Printf("SOAP Action: %s\n", action)
+
+	// Send dummy response
+	w.Header().Set("Content-Type", "text/xml; charset=\"utf-8\"")
 	w.WriteHeader(http.StatusOK)
+	w.Write([]byte(dummySOAPResponse(action)))
+}
+
+func extractSOAPAction(body []byte) string {
+	type Envelope struct {
+		Body struct {
+			XMLName xml.Name
+		} `xml:"Body"`
+	}
+
+	var env Envelope
+	if err := xml.Unmarshal(body, &env); err != nil {
+		log.Println("SOAP parse error:", err)
+		return "UnknownAction"
+	}
+
+	decoder := xml.NewDecoder(bytes.NewReader(body))
+	for {
+		tok, err := decoder.Token()
+		if err != nil {
+			break
+		}
+		if se, ok := tok.(xml.StartElement); ok && se.Name.Local != "Envelope" && se.Name.Local != "Body" {
+			return se.Name.Local
+		}
+	}
+	return "UnknownAction"
+}
+
+func dummySOAPResponse(action string) string {
+	// You can specialize per action if needed.
+	return `<?xml version="1.0"?>
+<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" 
+            s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
+  <s:Body>
+    <u:` + action + `Response xmlns:u="urn:schemas-upnp-org:service:AVTransport:1">
+    </u:` + action + `Response>
+  </s:Body>
+</s:Envelope>`
 }

internal/ssdp/responder.go

@@ -43,14 +43,19 @@ func StartSSDPResponder(usn, location string) {
 			st := extractHeader(data, "ST")
 			log.Printf("🔎 M-SEARCH from %s, ST=%s\n", src.String(), st)
 
-			if st == "ssdp:all" || st == serviceType {
-				go sendSSDPResponse(src, usn, location)
+			if st == "ssdp:all" ||
+				st == serviceType ||
+				strings.HasPrefix(st, "urn:schemas-upnp-org:service:") ||
+				strings.HasPrefix(st, "urn:av-openhome-org:service:") ||
+				strings.HasPrefix(st, "urn:bubblesoftapps-com:service:") {
+
+				go sendSSDPResponse(src, usn, location, st)
 			}
 		}
 	}
 }
 
-func sendSSDPResponse(dst *net.UDPAddr, usn, location string) {
+func sendSSDPResponse(dst *net.UDPAddr, usn, location, st string) {
 	resp := fmt.Sprintf(
 		"HTTP/1.1 200 OK\r\n"+
 			"CACHE-CONTROL: max-age=1800\r\n"+
@@ -63,11 +68,12 @@ func sendSSDPResponse(dst *net.UDPAddr, usn, location string) {
 			"\r\n",
 		time.Now().Format(time.RFC1123),
 		location,
-		serviceType,
+		st,
 		usn,
-		serviceType,
+		st,
 	)
 
+	// envoie UDP
 	conn, err := net.DialUDP("udp4", nil, dst)
 	if err != nil {
 		log.Println("Failed to dial UDP to respond:", err)

internal/ssdp/ssdp.go

@@ -2,7 +2,6 @@ package ssdp
 
 import (
 	"log"
-	"net"
 	"time"
 
 	"github.com/koron/go-ssdp"
@@ -32,12 +31,3 @@ func AnnounceRenderer(usn, location string) {
 	// Un jour on voudra faire ça à l'arrêt :
 	// adv.Close() // envoie le ssdp:byebye
 }
-func GetLocalIP() string {
-	conn, err := net.Dial("udp", "239.255.255.250:1900")
-	if err != nil {
-		return "127.0.0.1"
-	}
-	defer conn.Close()
-	localAddr := conn.LocalAddr().(*net.UDPAddr)
-	return localAddr.IP.String()
-}

internal/upnp/http.go

@@ -2,30 +2,16 @@ package upnp
 
 import (
 	"fmt"
-	"log"
-	"net/http"
-
-	"gargoton.petite-maison-orange.fr/eric/pmomusic/internal/soap"
 )
 
-func StartHTTPServer(usn string) {
-	http.HandleFunc("/description.xml", func(w http.ResponseWriter, r *http.Request) {
-		w.Header().Set("Content-Type", "text/xml")
-		w.Write([]byte(generateDeviceDescription(usn)))
-	})
-
-	http.HandleFunc("/upnp/control/AVTransport", soap.HandleSOAP)
-
-	log.Fatal(http.ListenAndServe(":1400", nil))
-}
-
-func generateDeviceDescription(usn string) string {
+func generateDeviceDescription(usn, ip string, port uint) string {
 	return fmt.Sprintf(`<?xml version="1.0"?>
 <root xmlns="urn:schemas-upnp-org:device-1-0">
   <specVersion>
     <major>1</major>
     <minor>0</minor>
   </specVersion>
+  <URLBase>http://%s:%d/</URLBase>
   <device>
     <deviceType>urn:schemas-upnp-org:device:MediaRenderer:1</deviceType>
     <friendlyName>pmomusic Fake Renderer</friendlyName>
@@ -36,7 +22,7 @@ func generateDeviceDescription(usn string) string {
     <modelNumber>1.0</modelNumber>
     <modelURL>http://example.com/model</modelURL>
     <UDN>%s</UDN>
-    <presentationURL>http://%s</presentationURL>
+    <presentationURL>http://%s:%d</presentationURL>
     <serviceList>
       <service>
         <serviceType>urn:schemas-upnp-org:service:AVTransport:1</serviceType>
@@ -61,5 +47,5 @@ func generateDeviceDescription(usn string) string {
       </service>
     </serviceList>
   </device>
-</root>`, usn, "127.0.0.1:1400") // à adapter à ton IP:port réel
+</root>`, ip, port, usn, ip, port)
 }

internal/upnp/server.go

@@ -0,0 +1,45 @@
+package upnp
+
+import (
+	"embed"
+	"fmt"
+	"io/fs"
+	"log"
+	"net/http"
+
+	"gargoton.petite-maison-orange.fr/eric/pmomusic/internal/soap"
+)
+
+//go:embed xml/*.xml
+var embeddedXML embed.FS
+
+// ServeStaticXML mounts handlers for SCPD XML files.
+func ServeStaticXML(mux *http.ServeMux) {
+	subFS, err := fs.Sub(embeddedXML, "xml")
+	if err != nil {
+		panic("failed to create sub FS: " + err.Error())
+	}
+	mux.Handle("/scpd/", http.StripPrefix("/scpd/", http.FileServer(http.FS(subFS))))
+}
+
+func StartHTTPServer(usn, ip string, port uint) {
+	mux := http.NewServeMux()
+
+	// Device description
+	mux.HandleFunc("/description.xml", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "text/xml")
+		w.Write([]byte(generateDeviceDescription(usn, ip, port)))
+	})
+
+	// SOAP control endpoints
+	mux.HandleFunc("/upnp/control/AVTransport", soap.HandleSOAP)
+	mux.HandleFunc("/upnp/control/RenderingControl", soap.HandleSOAP)
+	mux.HandleFunc("/upnp/control/ConnectionManager", soap.HandleSOAP)
+
+	// Serve static SCPD XML files
+	ServeStaticXML(mux)
+
+	addr := fmt.Sprintf("%s:%d", ip, port)
+	log.Printf("Serving UPnP fake renderer at http://%s", addr)
+	log.Fatal(http.ListenAndServe(addr, mux))
+}

internal/upnp/xml/AVTransport.xml

@@ -0,0 +1,81 @@
+<?xml version="1.0"?>
+<scpd xmlns="urn:schemas-upnp-org:service-1-0">
+  <specVersion>
+    <major>1</major>
+    <minor>0</minor>
+  </specVersion>
+  <actionList>
+    <action>
+      <name>SetAVTransportURI</name>
+      <argumentList>
+        <argument>
+          <name>InstanceID</name>
+          <direction>in</direction>
+          <relatedStateVariable>A_ARG_TYPE_InstanceID</relatedStateVariable>
+        </argument>
+        <argument>
+          <name>CurrentURI</name>
+          <direction>in</direction>
+          <relatedStateVariable>AVTransportURI</relatedStateVariable>
+        </argument>
+        <argument>
+          <name>CurrentURIMetaData</name>
+          <direction>in</direction>
+          <relatedStateVariable>AVTransportURIMetaData</relatedStateVariable>
+        </argument>
+      </argumentList>
+    </action>
+
+    <action>
+      <name>Play</name>
+      <argumentList>
+        <argument>
+          <name>InstanceID</name>
+          <direction>in</direction>
+          <relatedStateVariable>A_ARG_TYPE_InstanceID</relatedStateVariable>
+        </argument>
+        <argument>
+          <name>Speed</name>
+          <direction>in</direction>
+          <relatedStateVariable>TransportPlaySpeed</relatedStateVariable>
+        </argument>
+      </argumentList>
+    </action>
+
+    <action>
+      <name>Stop</name>
+      <argumentList>
+        <argument>
+          <name>InstanceID</name>
+          <direction>in</direction>
+          <relatedStateVariable>A_ARG_TYPE_InstanceID</relatedStateVariable>
+        </argument>
+      </argumentList>
+    </action>
+  </actionList>
+
+  <serviceStateTable>
+    <stateVariable sendEvents="no">
+      <name>A_ARG_TYPE_InstanceID</name>
+      <dataType>ui4</dataType>
+    </stateVariable>
+
+    <stateVariable sendEvents="no">
+      <name>AVTransportURI</name>
+      <dataType>string</dataType>
+    </stateVariable>
+
+    <stateVariable sendEvents="no">
+      <name>AVTransportURIMetaData</name>
+      <dataType>string</dataType>
+    </stateVariable>
+
+    <stateVariable sendEvents="no">
+      <name>TransportPlaySpeed</name>
+      <dataType>string</dataType>
+      <allowedValueList>
+        <allowedValue>1</allowedValue>
+      </allowedValueList>
+    </stateVariable>
+  </serviceStateTable>
+</scpd>

internal/upnp/xml/ConnectionManager.xml

@@ -0,0 +1,31 @@
+<?xml version="1.0"?>
+<scpd xmlns="urn:schemas-upnp-org:service-1-0">
+  <specVersion><major>1</major><minor>0</minor></specVersion>
+  <actionList>
+    <action>
+      <name>GetProtocolInfo</name>
+      <argumentList>
+        <argument>
+          <name>Source</name>
+          <direction>out</direction>
+          <relatedStateVariable>SourceProtocolInfo</relatedStateVariable>
+        </argument>
+        <argument>
+          <name>Sink</name>
+          <direction>out</direction>
+          <relatedStateVariable>SinkProtocolInfo</relatedStateVariable>
+        </argument>
+      </argumentList>
+    </action>
+  </actionList>
+  <serviceStateTable>
+    <stateVariable sendEvents="no">
+      <name>SourceProtocolInfo</name>
+      <dataType>string</dataType>
+    </stateVariable>
+    <stateVariable sendEvents="no">
+      <name>SinkProtocolInfo</name>
+      <dataType>string</dataType>
+    </stateVariable>
+  </serviceStateTable>
+</scpd>

internal/upnp/xml/RenderingControl.xml

@@ -0,0 +1,43 @@
+<?xml version="1.0"?>
+<scpd xmlns="urn:schemas-upnp-org:service-1-0">
+  <specVersion><major>1</major><minor>0</minor></specVersion>
+  <actionList>
+    <action>
+      <name>SetVolume</name>
+      <argumentList>
+        <argument>
+          <name>InstanceID</name>
+          <direction>in</direction>
+          <relatedStateVariable>A_ARG_TYPE_InstanceID</relatedStateVariable>
+        </argument>
+        <argument>
+          <name>Channel</name>
+          <direction>in</direction>
+          <relatedStateVariable>A_ARG_TYPE_Channel</relatedStateVariable>
+        </argument>
+        <argument>
+          <name>DesiredVolume</name>
+          <direction>in</direction>
+          <relatedStateVariable>Volume</relatedStateVariable>
+        </argument>
+      </argumentList>
+    </action>
+  </actionList>
+  <serviceStateTable>
+    <stateVariable sendEvents="no">
+      <name>A_ARG_TYPE_InstanceID</name>
+      <dataType>ui4</dataType>
+    </stateVariable>
+    <stateVariable sendEvents="no">
+      <name>A_ARG_TYPE_Channel</name>
+      <dataType>string</dataType>
+      <allowedValueList>
+        <allowedValue>Master</allowedValue>
+      </allowedValueList>
+    </stateVariable>
+    <stateVariable sendEvents="no">
+      <name>Volume</name>
+      <dataType>ui2</dataType>
+    </stateVariable>
+  </serviceStateTable>
+</scpd>