rename rendezvous to broker

broker/app.yaml

@@ -0,0 +1,10 @@
+# override this with appcfg.py -A $YOUR_APP_ID
+application: snowflake-reg
+version: 1
+runtime: go
+api_version: go1
+
+handlers:
+- url: /.*
+  script: _go_app
+  secure: always

broker/config.go

@@ -0,0 +1,16 @@
+/*
+This is the server-side code that runs on Google App Engine for the
+"appspot" registration method.
+
+See doc/appspot-howto.txt for more details about setting up an
+application, and advice on running one.
+
+To upload a new version:
+$ torify ~/go_appengine/appcfg.py --no_cookies -A $YOUR_APP_ID update .
+*/
+package snowflake_broker
+
+// host:port/basepath of the facilitator you want to register with
+// for example, fp-facilitator.org or example.com:12345/facilitator
+// https:// and /reg/ will be prepended and appended respectively.
+const SNOWFLAKE_FACILITATOR = ""

broker/snowflake-broker.go

@@ -0,0 +1,65 @@
+package snowflake_broker
+
+import (
+	// "io"
+	"io/ioutil"
+	"log"
+	"net"
+	"net/http"
+	"path"
+
+	// "appengine"
+	// "appengine/urlfetch"
+)
+
+// This is an intermediate step - a basic hardcoded appengine rendezvous
+// to a single browser snowflake.
+
+var snowflakeProxy = ""
+
+func robotsTxtHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "text/plain; charset=utf-8")
+	w.Write([]byte("User-agent: *\nDisallow:\n"))
+}
+
+func ipHandler(w http.ResponseWriter, r *http.Request) {
+	remoteAddr := r.RemoteAddr
+	if net.ParseIP(remoteAddr).To4() == nil {
+		remoteAddr = "[" + remoteAddr + "]"
+	}
+	w.Header().Set("Content-Type", "text/plain; charset=utf-8")
+	w.Write([]byte(remoteAddr))
+}
+
+/*
+Expects a WebRTC SDP offer in the Request to give to an assigned
+snowflake proxy, which responds with the SDP answer to be sent in
+the HTTP response back to the client.
+*/
+func regHandler(w http.ResponseWriter, r *http.Request) {
+	// TODO: Maybe don't pass anything on path, since it will always be bidirectional
+	dir, _ := path.Split(path.Clean(r.URL.Path))
+	if dir != "/reg/" {
+		http.NotFound(w, r)
+		return
+	}
+	body, err := ioutil.ReadAll(r.Body)
+	if nil != err {
+		return
+		log.Println("Invalid data.")
+	}
+
+	// TODO: Get browser snowflake to talkto this appengine instance
+	// so it can reply with an answer, and not just the offer again :)
+	// TODO: Real facilitator which matches clients and snowflake proxies.
+	w.Write(body)
+}
+
+func init() {
+	http.HandleFunc("/robots.txt", robotsTxtHandler)
+	http.HandleFunc("/ip", ipHandler)
+	http.HandleFunc("/reg/", regHandler)
+	// if SNOWFLAKE_FACILITATOR == "" {
+	// panic("SNOWFLAKE_FACILITATOR empty; did you forget to edit config.go?")
+	// }
+}