Strip User-Agent header

SignalServiceKit/src/Loki/API/Onion Requests/OnionRequestAPI.swift

@@ -281,7 +281,8 @@ public enum OnionRequestAPI {
     
     /// Sends an onion request to `server`. Builds new paths as needed.
     internal static func sendOnionRequest(_ request: NSURLRequest, to server: String, using x25519PublicKey: String, isJSONRequired: Bool = true) -> Promise<JSON> {
-        let rawHeaders = request.allHTTPHeaderFields ?? [:]
+        var rawHeaders = request.allHTTPHeaderFields ?? [:]
+        rawHeaders.removeValue(forKey: "User-Agent")
         var headers: JSON = rawHeaders.mapValues { value in
             switch value.lowercased() {
             case "true": return true

SignalServiceKit/src/Loki/API/Utilities/HTTP.swift

@@ -64,6 +64,7 @@ public enum HTTP {
         request.httpMethod = verb.rawValue
         request.httpBody = body
         request.timeoutInterval = timeout
+        request.allHTTPHeaderFields?.removeValue(forKey: "User-Agent")
         let (promise, seal) = Promise<JSON>.pending()
         let urlSession = useSeedNodeURLSession ? seedNodeURLSession : defaultURLSession
         let task = urlSession.dataTask(with: request) { data, response, error in