Accept text/plain responses.

SignalServiceKit/src/Loki/LokiMessage.swift

@@ -45,7 +45,7 @@ public struct LokiMessage {
     }
     
     public func toJSON() -> JSON {
-        var result = [ "destination" : destination, "data" : data.description, "ttl" : String(ttl) ]
+        var result = [ "pubKey" : destination, "data" : data.description, "ttl" : String(ttl) ]
         if let timestamp = timestamp, let nonce = nonce {
             result["timestamp"] = String(timestamp)
             result["nonce"] = nonce

SignalServiceKit/src/Network/OWSSignalService.m

@@ -196,6 +196,9 @@ NSString *const kNSNotificationName_IsCensorshipCircumventionActiveDidChange =
     sessionManager.responseSerializer = [AFJSONResponseSerializer serializer];
     // Disable default cookie handling for all requests.
     sessionManager.requestSerializer.HTTPShouldHandleCookies = NO;
+    
+    // LOKI: We need to accept text/plain for now as the storage server returns this to us
+    sessionManager.responseSerializer.acceptableContentTypes = [sessionManager.responseSerializer.acceptableContentTypes setByAddingObject:@"text/plain"];
 
     return sessionManager;
 }