Pinecone P2P demo (#1856)

* Pinecone demo

* Enable multicast, fix HTTP routing

* Fix multicast import

* Fix build

* Update Pinecone demo

* Fix the keys

* Tweaks

* Pinecone room directory support (early)

* Fix gobind-pinecone

* Add pinecone listener

* Fix public key value

* Use AuthenticatedConnect for dial

* Fix gobind-pinecone

* Stop panics

* Give fsAPI to keyserver

* Pinecone demo fixes

* Update gobind build scripts

* Account creation

* Tweaks

* Setup tweaks

* API tweaks

* API tweaks

* API tweaks

* Port mutex

* Re-enable multicast

* Add ReadCopy

* Update quic-go, fixes

* Shutdowns fixed for iOS

* Update build script

* Add WebSocket support

* Bug fixes

* Netconn context

* Fix WebSocket connectivity

* Fixes to gobind API

* Strip frameworks

* Configurability updates

* Update go.mod

* Update go.mod/go.sum

* Update go.mod/go.sum

* Update go.mod/go.sum

* Try to stay connected tto static peer

* Update gobind-pinecone

* Update go.mod/go.sum

* Test uTP+TLS

* Use HTTP/2

* Don't use HTTP/2

* Update go.mod/go.sum

* Attempt to reconnect to the static peer if it drops

* Stay connected to static peers more stickily

* Retry room directory lookups if they fail

* NewQUIC -> NewSessions

* Storage updates

* Don't return immediately when there's nothing to sync

* Updates

* Try to reconnect to static peer more

* Update go.mod/go.sum

* Require Go 1.14

* Update go.mod/go.sum

* Update go.mod/go.sum

cmd/dendrite-demo-pinecone/embed/embed_other.go

@@ -0,0 +1,9 @@
+// +build !riotweb
+
+package embed
+
+import "github.com/gorilla/mux"
+
+func Embed(_ *mux.Router, _ int, _ string) {
+
+}

cmd/dendrite-demo-pinecone/embed/embed_riotweb.go

@@ -0,0 +1,83 @@
+// +build riotweb
+
+package embed
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"regexp"
+
+	"github.com/gorilla/mux"
+	"github.com/tidwall/sjson"
+)
+
+// From within the Riot Web directory:
+// go run github.com/mjibson/esc -o /path/to/dendrite/internal/embed/fs_riotweb.go -private -pkg embed .
+
+var cssFile = regexp.MustCompile("\\.css$")
+var jsFile = regexp.MustCompile("\\.js$")
+
+type mimeFixingHandler struct {
+	fs http.Handler
+}
+
+func (h mimeFixingHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	ruri := r.RequestURI
+	fmt.Println(ruri)
+	switch {
+	case cssFile.MatchString(ruri):
+		w.Header().Set("Content-Type", "text/css")
+	case jsFile.MatchString(ruri):
+		w.Header().Set("Content-Type", "application/javascript")
+	default:
+	}
+	h.fs.ServeHTTP(w, r)
+}
+
+func Embed(rootMux *mux.Router, listenPort int, serverName string) {
+	embeddedFS := _escFS(false)
+	embeddedServ := mimeFixingHandler{http.FileServer(embeddedFS)}
+
+	rootMux.NotFoundHandler = embeddedServ
+	rootMux.HandleFunc("/config.json", func(w http.ResponseWriter, r *http.Request) {
+		url := fmt.Sprintf("http://%s:%d", r.Header("Host"), listenPort)
+		configFile, err := embeddedFS.Open("/config.sample.json")
+		if err != nil {
+			w.WriteHeader(500)
+			io.WriteString(w, "Couldn't open the file: "+err.Error())
+			return
+		}
+		configFileInfo, err := configFile.Stat()
+		if err != nil {
+			w.WriteHeader(500)
+			io.WriteString(w, "Couldn't stat the file: "+err.Error())
+			return
+		}
+		buf := make([]byte, configFileInfo.Size())
+		n, err := configFile.Read(buf)
+		if err != nil {
+			w.WriteHeader(500)
+			io.WriteString(w, "Couldn't read the file: "+err.Error())
+			return
+		}
+		if int64(n) != configFileInfo.Size() {
+			w.WriteHeader(500)
+			io.WriteString(w, "The returned file size didn't match what we expected")
+			return
+		}
+		js, _ := sjson.SetBytes(buf, "default_server_config.m\\.homeserver.base_url", url)
+		js, _ = sjson.SetBytes(js, "default_server_config.m\\.homeserver.server_name", serverName)
+		js, _ = sjson.SetBytes(js, "brand", fmt.Sprintf("Riot %s", serverName))
+		js, _ = sjson.SetBytes(js, "disable_guests", true)
+		js, _ = sjson.SetBytes(js, "disable_3pid_login", true)
+		js, _ = sjson.DeleteBytes(js, "welcomeUserId")
+		_, _ = w.Write(js)
+	})
+
+	fmt.Println("*-------------------------------*")
+	fmt.Println("| This build includes Riot Web! |")
+	fmt.Println("*-------------------------------*")
+	fmt.Println("Point your browser to:", url)
+	fmt.Println()
+}