Implement setting TlsTermination on server

api.go

@@ -296,6 +296,11 @@ func (a *Api) CreateTunnel(tokenData TokenData, params url.Values) (*Tunnel, err
 		}
 	}
 
+	tlsTerm := params.Get("tls-termination")
+	if tlsTerm != "server" && tlsTerm != "client" && tlsTerm != "passthrough" {
+		return nil, errors.New("Invalid tls-termination parameter")
+	}
+
 	request := Tunnel{
 		Domain:           domain,
 		SshKey:           sshKey.Key,
@@ -306,6 +311,7 @@ func (a *Api) CreateTunnel(tokenData TokenData, params url.Values) (*Tunnel, err
 		AllowExternalTcp: allowExternalTcp,
 		AuthUsername:     username,
 		AuthPassword:     password,
+		TlsTermination:   tlsTerm,
 	}
 
 	tunnel, err := a.tunMan.RequestCreateTunnel(request)

client.go

@@ -239,15 +239,21 @@ func (c *BoringProxyClient) BoreTunnel(tunnel Tunnel) context.CancelFunc {
 			}
 			tlsListener := tls.NewListener(listener, tlsConfig)
 
-			http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+			httpMux := http.NewServeMux()
+
+			httpMux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
 				proxyRequest(w, r, tunnel, c.httpClient, tunnel.ClientPort)
 			})
 
+			httpServer := &http.Server{
+				Handler: httpMux,
+			}
+
 			// TODO: It seems inefficient to make a separate HTTP server for each TLS-passthrough tunnel,
 			// but the code is much simpler. The only alternative I've thought of so far involves storing
 			// all the tunnels in a mutexed map and retrieving them from a single HTTP server, same as the
 			// boringproxy server does.
-			go http.Serve(tlsListener, nil)
+			go httpServer.Serve(tlsListener)
 
 		} else {
 

webui/index.tmpl

@@ -134,6 +134,14 @@
                    <input type="password" id="password" name="password">
                  </div>
                </div>
+               <div class='input'>
+                 <label for="tls-termination">TLS Termination:</label>
+                 <select id="tls-termination" name="tls-termination">
+                   <option value="server">Server</option>
+                   <option value="client">Client</option>
+                   <option value="passthrough">Passthrough</option>
+                 </select>
+               </div>
                <button class='button' type="submit">Submit</button>
             </form>
           </div>