Making "one way" require a small 32 string to share

client.go

@@ -3,7 +3,9 @@ package main
 import (
 	"bufio"
 	"fmt"
+	"io/ioutil"
 	"log"
+	"net/http"
 	"os"
 	"os/signal"
 	"syscall"
@@ -107,7 +109,28 @@ func (cs *clientSession) run() (err error) {
 	cs.dc.OnOpen(cs.dataChannelOnOpen())
 	cs.dc.OnMessage(cs.dataChannelOnMessage())
 
-	if cs.offer, err = sd.Decode(cs.offerString); err != nil {
+	offerText := cs.offerString
+	if len(cs.offerString) == 32 {
+		url := fmt.Sprintf("https://www.10kb.site/%s", cs.offerString)
+		req, err := http.NewRequest("GET", url, nil)
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		client := &http.Client{}
+		req.Header.Set("Content-Type", "text/plain;charset=UTF-8")
+		resp, err := client.Do(req)
+		if err != nil {
+			log.Fatal(err)
+		}
+		bodyText, err := ioutil.ReadAll(resp.Body)
+		if err != nil {
+			log.Fatal(err)
+		}
+		offerText = fmt.Sprintf("%s", bodyText)
+	}
+
+	if cs.offer, err = sd.Decode(fmt.Sprintf("%s", offerText)); err != nil {
 		log.Println(err)
 		return
 	}
@@ -164,5 +187,6 @@ func (cs *clientSession) run() (err error) {
 	}
 	err = <-cs.errChan
 	cs.cleanup()
+	os.Exit(1)
 	return err
 }

go.mod

@@ -4,6 +4,7 @@ go 1.12
 
 require (
 	github.com/btcsuite/btcutil v0.0.0-20190316010144-3ac1210f4b38
+	github.com/google/uuid v1.1.2
 	github.com/kr/pty v1.1.4
 	github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db
 	github.com/pion/webrtc/v2 v2.1.18

go.sum

@@ -11,6 +11,8 @@ github.com/golang/mock v1.2.0 h1:28o5sBqPkBsMGnC6b4MvE2TzSr5/AT4c/1fLqVGIwlk=
 github.com/golang/mock v1.2.0/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/google/uuid v1.1.2 h1:EVhdT+1Kseyi1/pUmXKaFxYsDNy9RQYkMWRH68J/W7Y=
+github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
 github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=

host.go

@@ -5,12 +5,16 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"io/ioutil"
 	"log"
+	"net/http"
 	"os"
 	"os/exec"
 	"os/signal"
+	"strings"
 	"time"
 
+	"github.com/google/uuid"
 	"github.com/kr/pty"
 	"github.com/maxmcd/webtty/pkg/sd"
 	"github.com/mitchellh/colorstring"
@@ -208,22 +212,54 @@ func (hs *hostSession) run() (err error) {
 	if err = hs.init(); err != nil {
 		return
 	}
+
+	var connection_uuid string = ""
+	if err = hs.createOffer(); err != nil {
+		return
+	}
+
 	colorstring.Printf("[bold]Setting up a WebTTY connection.\n\n")
 	if hs.oneWay {
 		colorstring.Printf(
 			"Warning: One-way connections rely on a third party to connect. " +
 				"More info here: https://github.com/maxmcd/webtty#one-way-connections\n\n")
-	}
 
-	if err = hs.createOffer(); err != nil {
-		return
+		// send SDP to 10kb.site
+		var data = strings.NewReader(sd.Encode(hs.offer))
+		connection_uuid = strings.Replace(uuid.New().String(), "-", "", -1)
+		url := fmt.Sprintf("https://up.10kb.site/%s", connection_uuid)
+		req, err := http.NewRequest("POST", url, data)
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		client := &http.Client{}
+		req.Header.Set("Content-Type", "text/plain;charset=UTF-8")
+		resp, err := client.Do(req)
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		_, err = ioutil.ReadAll(resp.Body)
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		// Output the offer in base64 so we can paste it in browser
+		colorstring.Printf("[bold]Connection ready. Here is your connection data:\n\n")
+
+		fmt.Printf("%s\n\n", connection_uuid)
+		colorstring.Printf(`[bold]Paste it in the terminal after the webtty command` +
+			"\n")
 	}
 
-	// Output the offer in base64 so we can paste it in browser
-	colorstring.Printf("[bold]Connection ready. Here is your connection data:\n\n")
-	fmt.Printf("%s\n\n", sd.Encode(hs.offer))
-	colorstring.Printf(`[bold]Paste it in the terminal after the webtty command` +
-		"\n[bold]Or in a browser: [reset]https://maxmcd.github.io/webtty/\n\n")
+	if connection_uuid == "" {
+		// Output the offer in base64 so we can paste it in browser
+		colorstring.Printf("[bold]Connection ready. Here is your connection data:\n\n")
+		fmt.Printf("%s\n\n", sd.Encode(hs.offer))
+		colorstring.Printf(`[bold]Paste it in the terminal after the webtty command` +
+			"\n[bold]Or in a browser: [reset]https://maxmcd.github.io/webtty/\n\n")
+	}
 
 	if hs.oneWay == false {
 		colorstring.Println("[bold]When you have the answer, paste it below and hit enter:")

main.go

@@ -6,6 +6,8 @@ import (
 	"io/ioutil"
 	"log"
 	"os"
+	"os/signal"
+	"syscall"
 )
 
 func main() {
@@ -19,6 +21,17 @@ func main() {
 		"eg: webtty -o -v -ni -cmd docker run -it --rm alpine:latest sh")
 	stunServer := flag.String("s", "stun:stun.l.google.com:19302", "The stun server to use")
 
+	sigc := make(chan os.Signal, 1)
+	signal.Notify(sigc,
+		syscall.SIGHUP,
+		syscall.SIGINT,
+		syscall.SIGTERM,
+		syscall.SIGQUIT)
+	go func() {
+		_ = <-sigc
+		os.Exit(0)
+	}()
+
 	cmd := []string{"bash", "-l"}
 	for i, arg := range os.Args {
 		if arg == "-cmd" {
@@ -38,7 +51,6 @@ func main() {
 	if len(args) > 0 {
 		offerString = args[len(args)-1]
 	}
-
 	var err error
 	if len(offerString) == 0 {
 		hc := hostSession{