LOCAL_ROOT_URL for workers accessing web service

Local (DMZ) URL for gogs workers (such as ssh update) accessing web service. In
most cases you do not need to change default http://localhost:HTTP_PORT/. You
may need to alter it only if your ssh server node is not the same as http node,
eg. running behind proxy on different node than web server.

                     --- 80 public port -> 8080 -- web server node
                    /
    public proxy --<
                    \
                     --- 22 public port -> 10022 -- ssh server node

This option is not intended to be accessible via web GUI settings, since it is
unlikely someone needs to change it to somethings else than default
http://localhost:HTTP_PORT/ which should work for most of the cases.

But this should land into the documentation somewhere.

fixup

conf/app.ini

@@ -46,6 +46,10 @@ DOMAIN = localhost
 ROOT_URL = %(PROTOCOL)s://%(DOMAIN)s:%(HTTP_PORT)s/
 HTTP_ADDR =
 HTTP_PORT = 3000
+; Local (DMZ) URL for Gogs workers (such as SSH update) accessing web service.
+; In most cases you do not need to change the default value.
+; Alter it only if your SSH server node is not the same as HTTP node.
+LOCAL_ROOT_URL = http://localhost:%(HTTP_PORT)s/
 ; Disable SSH feature when not available
 DISABLE_SSH = false
 ; Whether use builtin SSH server or not.

modules/setting/setting.go

@@ -59,6 +59,7 @@ var (
 	Protocol           Scheme
 	Domain             string
 	HttpAddr, HttpPort string
+	LocalUrl           string
 	DisableSSH         bool
 	StartSSHServer     bool
 	SSHDomain          string
@@ -300,6 +301,7 @@ func NewContext() {
 	Domain = sec.Key("DOMAIN").MustString("localhost")
 	HttpAddr = sec.Key("HTTP_ADDR").MustString("0.0.0.0")
 	HttpPort = sec.Key("HTTP_PORT").MustString("3000")
+	LocalUrl = sec.Key("LOCAL_ROOT_URL").MustString("http://localhost:" + HttpPort + "/")
 	DisableSSH = sec.Key("DISABLE_SSH").MustBool()
 	if !DisableSSH {
 		StartSSHServer = sec.Key("START_SSH_SERVER").MustBool()