Rework stream key parsing

Instead of using a GET value in the URL, split on the path separators
and use the second element of the path as the key.  This enables
putting the stream key in the appropriate settings in OBS, instead of
appending it to the stream URL manually.

main.go

@@ -6,6 +6,7 @@ import (
 	"io"
 	"net/http"
 	"os"
+	"strings"
 	"sync"
 
 	"github.com/nareix/joy4/av/avutil"
@@ -60,30 +61,49 @@ func main() {
 
 		l.Lock()
 		fmt.Println("request string->", conn.URL.RequestURI())
-		fmt.Println("request key->", conn.URL.Query().Get("key"))
-		streamKey := conn.URL.Query().Get("key")
-		if streamKey != *sKey {
+		urlParts := strings.Split(strings.Trim(conn.URL.RequestURI(), "/"), "/")
+		fmt.Println("urlParts->", urlParts)
+
+		if len(urlParts) > 2 {
+			fmt.Println("Extra garbage after stream key")
+			conn.Close()
+			return
+		}
+
+		if len(urlParts) != 2 {
+			fmt.Println("Missing stream key")
+			conn.Close()
+			return
+		}
+
+		if urlParts[1] != *sKey {
 			fmt.Println("Due to key not match, denied stream")
+			conn.Close()
 			return //If key not match, deny stream
 		}
-		ch := channels[conn.URL.Path]
+		streamPath := urlParts[0]
+		ch := channels[streamPath]
 		if ch == nil {
 			ch = &Channel{}
 			ch.que = pubsub.NewQueue()
 			ch.que.WriteHeader(streams)
-			channels[conn.URL.Path] = ch
+			channels[streamPath] = ch
 		} else {
 			ch = nil
 		}
 		l.Unlock()
 		if ch == nil {
+			fmt.Println("Unable to start stream, channel is nil.")
+			conn.Close()
 			return
 		}
 
+		fmt.Println("Stream started")
 		avutil.CopyPackets(ch.que, conn)
+		fmt.Println("Stream finished")
 
 		l.Lock()
-		delete(channels, conn.URL.Path)
+		delete(channels, streamPath)
 		l.Unlock()
 		ch.que.Close()
 	}
@@ -102,7 +122,7 @@ func main() {
 
 	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
 		l.RLock()
-		ch := channels[r.URL.Path]
+		ch := channels[strings.Trim(r.URL.Path, "/")]
 		l.RUnlock()
 
 		if ch != nil {