init commit

+ Added fastly_client_ip to X-Real-IP auto rewrite
+ Updated header rewrite data structure (wip)
+ Added atomic accumulator to TCP proxy
+ Added wip UDP proxy
+ Added white logo for future dark theme

src/mod/dynamicproxy/Server.go

@@ -14,11 +14,16 @@ import (
 	Main server for dynamic proxy core
 
 	Routing Handler Priority (High to Low)
-	- Blacklist
-	- Whitelist
+	- Special Routing Rule (e.g. acme)
 	- Redirectable
 	- Subdomain Routing
-	- Vitrual Directory Routing
+		- Access Router
+			- Blacklist
+			- Whitelist
+		- Basic Auth
+		- Vitrual Directory Proxy
+		- Subdomain Proxy
+	- Root router (default site router)
 */
 
 func (h *ProxyHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {

src/mod/dynamicproxy/dpcore/dpcore.go

@@ -304,9 +304,13 @@ func addXForwardedForHeader(req *http.Request) {
 		if req.Header.Get("X-Real-Ip") == "" {
 			//Check if CF-Connecting-IP header exists
 			CF_Connecting_IP := req.Header.Get("CF-Connecting-IP")
+			Fastly_Client_IP := req.Header.Get("Fastly-Client-IP")
 			if CF_Connecting_IP != "" {
 				//Use CF Connecting IP
 				req.Header.Set("X-Real-Ip", CF_Connecting_IP)
+			} else if Fastly_Client_IP != "" {
+				//Use Fastly Client IP
+				req.Header.Set("X-Real-Ip", Fastly_Client_IP)
 			} else {
 				// Not exists. Fill it in with first entry in X-Forwarded-For
 				ips := strings.Split(clientIP, ",")

src/mod/dynamicproxy/typedef.go

@@ -72,10 +72,21 @@ type BasicAuthExceptionRule struct {
 	PathPrefix string
 }
 
+// Header injection direction type
+type HeaderDirection int
+
+const (
+	HeaderDirection_ZoraxyToUpstream   HeaderDirection = 0 //Inject (or remove) header to request out-going from Zoraxy to backend server
+	HeaderDirection_ZoraxyToDownstream HeaderDirection = 1 //Inject (or remove) header to request out-going from Zoraxy to client (e.g. browser)
+)
+
 // User defined headers to add into a proxy endpoint
 type UserDefinedHeader struct {
-	Key   string
-	Value string
+	Direction HeaderDirection
+	Key       string
+	Value     string
+	IsRemove  bool //Instead of set, remove this key instead
+	IsAppend  bool //Instead of set, append to the current one with "," as seperator
 }
 
 // A Virtual Directory endpoint, provide a subset of ProxyEndpoint for better