Fix ORTC example

README didn't describe how to get signaling into client 1

Relates to #379

examples/broadcast/README.md

@@ -20,7 +20,7 @@ Run `broadcast` OR run `main.go` in `github.com/pion/webrtc/examples/broadcast`
 
 * Click `Publish a Broadcast`
 * Press `Copy browser SDP to clipboard` or copy the `Browser base64 Session Description` string manually
-* Run `curl localhost:8080/sdp -d "$BROWSER_OFFER"`. `$BROWSER_OFFER` is the value you copied in the last step.
+* Run `curl localhost:8080 -d "$BROWSER_OFFER"`. `$BROWSER_OFFER` is the value you copied in the last step.
 * The `broadcast` terminal application will respond with an answer, paste this into the second input field in your browser.
 * Press `Start Session`
 * The connection state will be printed in the terminal and under `logs` in the browser.
@@ -28,7 +28,7 @@ Run `broadcast` OR run `main.go` in `github.com/pion/webrtc/examples/broadcast`
 ### Join the broadcast
 * Click `Join a Broadcast`
 * Copy the string in the first input labelled `Browser base64 Session Description`
-* Run `curl localhost:8080/sdp -d "$BROWSER_OFFER"`. `$BROWSER_OFFER` is the value you copied in the last step.
+* Run `curl localhost:8080 -d "$BROWSER_OFFER"`. `$BROWSER_OFFER` is the value you copied in the last step.
 * The `broadcast` terminal application will respond with an answer, paste this into the second input field in your browser.
 * Press `Start Session`
 * The connection state will be printed in the terminal and under `logs` in the browser.

examples/broadcast/main.go

@@ -9,6 +9,7 @@ package main
 
 import (
 	"errors"
+	"flag"
 	"fmt"
 	"io"
 
@@ -19,7 +20,10 @@ import (
 )
 
 func main() { // nolint:gocognit
-	sdpChan := signal.HTTPSDPServer()
+	port := flag.Int("port", 8080, "http server port")
+	flag.Parse()
+
+	sdpChan := signal.HTTPSDPServer(*port)
 
 	// Everything below is the Pion WebRTC API, thanks for using it ❤️.
 	offer := webrtc.SessionDescription{}

examples/internal/signal/http.go

@@ -4,7 +4,6 @@
 package signal
 
 import (
-	"flag"
 	"fmt"
 	"io/ioutil"
 	"net/http"
@@ -12,12 +11,9 @@ import (
 )
 
 // HTTPSDPServer starts a HTTP Server that consumes SDPs
-func HTTPSDPServer() chan string {
-	port := flag.Int("port", 8080, "http server port")
-	flag.Parse()
-
+func HTTPSDPServer(port int) chan string {
 	sdpChan := make(chan string)
-	http.HandleFunc("/sdp", func(w http.ResponseWriter, r *http.Request) {
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
 		body, _ := ioutil.ReadAll(r.Body)
 		fmt.Fprintf(w, "done")
 		sdpChan <- string(body)
@@ -25,7 +21,7 @@ func HTTPSDPServer() chan string {
 
 	go func() {
 		// nolint: gosec
-		err := http.ListenAndServe(":"+strconv.Itoa(*port), nil)
+		err := http.ListenAndServe(":"+strconv.Itoa(port), nil)
 		if err != nil {
 			panic(err)
 		}

examples/ortc/README.md

@@ -18,7 +18,13 @@ go install github.com/pion/webrtc/v4/examples/ortc@latest
 ## Run the second client as answerer
 Run the second client. This should be launched with the message you copied in the previous step as stdin.
 
-`echo BASE64_MESSAGE_YOU_COPIED | ortc`
+`echo $BASE64_MESSAGE_YOU_COPIED | ortc`
+
+This will emit another base64 message. Copy this new message.
+
+## Send base64 message to first client via CURL
+
+* Run `curl localhost:8080 -d "BASE64_MESSAGE_YOU_COPIED"`. `BASE64_MESSAGE_YOU_COPIED` is the value you copied in the last step.
 
 ### Enjoy
 If everything worked you will see `Data channel 'Foo'-'' open.` in each terminal.

examples/ortc/main.go

@@ -18,6 +18,7 @@ import (
 
 func main() {
 	isOffer := flag.Bool("offer", false, "Act as the offerer if set")
+	port := flag.Int("port", 8080, "http server port")
 	flag.Parse()
 
 	// Everything below is the Pion WebRTC (ORTC) API! Thanks for using it ❤️.
@@ -103,7 +104,13 @@ func main() {
 	// Exchange the information
 	fmt.Println(signal.Encode(s))
 	remoteSignal := Signal{}
-	signal.Decode(signal.MustReadStdin(), &remoteSignal)
+
+	if *isOffer {
+		signalingChan := signal.HTTPSDPServer(*port)
+		signal.Decode(<-signalingChan, &remoteSignal)
+	} else {
+		signal.Decode(signal.MustReadStdin(), &remoteSignal)
+	}
 
 	iceRole := webrtc.ICERoleControlled
 	if *isOffer {