add optional tls/http2 support

Allows for http2 server push, see the advanced section.

.gitignore

@@ -9,3 +9,6 @@ docs/*
 lang/langtostruct.py
 config-payload.json
 !docs/go.mod
+server.key
+server.pem
+server.crt

config/config-base.json

@@ -219,6 +219,50 @@
                 }
             }
         },
+        "advanced": {
+            "order": [],
+            "meta": {
+                "name": "Advanced",
+                "description": "Advanced settings."
+            },
+            "settings": {
+                "tls": {
+                    "name": "TLS/HTTP2",
+                    "required": false,
+                    "requires_restart": true,
+                    "type": "bool",
+                    "value": false,
+                    "description": "Enable TLS, and by extension HTTP2. This enables server push, where required files are pushed to the web browser before they request them, allowing quicker page loads."
+                },
+                "tls_port": {
+                    "name": "TLS Port",
+                    "depends_true": "tls",
+                    "required": false,
+                    "requires_restart": true,
+                    "type": "number",
+                    "value": 8057,
+                    "description": "Port to run TLS server on"
+                },
+                "tls_cert": {
+                    "name": "Path to TLS Certificate",
+                    "depends_true": "tls",
+                    "required": false,
+                    "requires_restart": true,
+                    "type": "text",
+                    "value": "",
+                    "description": "Path to .crt file. See jfa-go wiki for more info."
+                },
+                "tls_key": {
+                    "name": "Path to TLS Key file",
+                    "depends_true": "tls",
+                    "required": false,
+                    "requires_restart": true,
+                    "type": "text",
+                    "value": "",
+                    "description": "Path to .key file. See jfa-go wiki for more info."
+                }
+            }
+        },
         "password_validation": {
             "order": [],
             "meta": {

main.go

@@ -331,7 +331,12 @@ func start(asDaemon, firstCall bool) {
 
 	if !firstRun {
 		app.host = app.config.Section("ui").Key("host").String()
-		app.port = app.config.Section("ui").Key("port").MustInt(8056)
+		if app.config.Section("advanced").Key("tls").MustBool(false) {
+			app.info.Println("Using TLS/HTTP2")
+			app.port = app.config.Section("advanced").Key("tls_port").MustInt(8057)
+		} else {
+			app.port = app.config.Section("ui").Key("port").MustInt(8056)
+		}
 
 		if *HOST != app.host && *HOST != "" {
 			app.host = *HOST
@@ -350,7 +355,6 @@ func start(asDaemon, firstCall bool) {
 				}
 			}
 		}
-
 		address = fmt.Sprintf("%s:%d", app.host, app.port)
 
 		app.debug.Printf("Loaded config file \"%s\"", app.configPath)
@@ -625,8 +629,16 @@ func start(asDaemon, firstCall bool) {
 		Handler: router,
 	}
 	go func() {
-		if err := SRV.ListenAndServe(); err != nil {
+		if app.config.Section("advanced").Key("tls").MustBool(false) {
-			app.err.Printf("Failure serving: %s", err)
+			cert := app.config.Section("advanced").Key("tls_cert").MustString("")
+			key := app.config.Section("advanced").Key("tls_key").MustString("")
+			if err := SRV.ListenAndServeTLS(cert, key); err != nil {
+				app.err.Printf("Failure serving: %s", err)
+			}
+		} else {
+			if err := SRV.ListenAndServe(); err != nil {
+				app.err.Printf("Failure serving: %s", err)
+			}
 		}
 	}()
 	app.quit = make(chan os.Signal)