add option to disableEventMessageParsing and receive all messages as a "rawMessage"

Author: lavenj

Source/SocketIO/Client/SocketIOClientOption.swift

@@ -77,6 +77,10 @@ public enum SocketIOClientOption : ClientOption {
     /// Used to pass in a custom logger.
     case logger(SocketLogger)
 
+    /// If passed `true`, event message data will not be parsed, and all message events will be received with
+    /// `event` value of `"rawMessage"`; listen with `socketClient.on("rawMessage") { ... }`
+    case disableEventMessageParsing(Bool)
+
     /// A custom path to socket.io. Only use this if the socket.io server is configured to look for this path.
     case path(String)
 
@@ -124,6 +128,8 @@ public enum SocketIOClientOption : ClientOption {
             description = "connectParams"
         case .cookies:
             description = "cookies"
+        case .disableEventMessageParsing:
+            description = "disableEventMessageParsing"
         case .extraHeaders:
             description = "extraHeaders"
         case .forceNew:
@@ -177,6 +183,8 @@ public enum SocketIOClientOption : ClientOption {
             value = params
         case let .cookies(cookies):
             value = cookies
+        case let .disableEventMessageParsing(disable):
+            value = disable
         case let .extraHeaders(headers):
             value = headers
         case let .forceNew(force):

Source/SocketIO/Manager/SocketManager.swift

@@ -79,6 +79,11 @@ open class SocketManager: NSObject, SocketManagerSpec, SocketParsable, SocketDat
         }
     }
 
+    
+    /// If passed `true`, event message data will not be parsed, and all message events will be received with
+    /// `event` = "rawMessage"
+    public var disableEventMessageParsing = false
+    
     /// The engine for this manager.
     public var engine: SocketEngineSpec?
 
@@ -539,6 +544,8 @@ open class SocketManager: NSObject, SocketManagerSpec, SocketParsable, SocketDat
     open func setConfigs(_ config: SocketIOClientConfiguration) {
         for option in config {
             switch option {
+            case let .disableEventMessageParsing(disable):
+                disableEventMessageParsing = disable
             case let .forceNew(new):
                 forceNew = new
             case let .handleQueue(queue):

Source/SocketIO/Parse/SocketParsable.swift

@@ -24,6 +24,9 @@ import Foundation
 
 /// Defines that a type will be able to parse socket.io-protocol messages.
 public protocol SocketParsable : AnyObject {
+    /// if `true`, disable parsing event payloads
+    var disableEventMessageParsing: Bool { get }
+
     // MARK: Methods
 
     /// Called when the engine has received some binary data that should be attached to a packet.
@@ -118,6 +121,10 @@ public extension SocketParsable where Self: SocketManagerSpec & SocketDataBuffer
 
         var dataArray = String(message.utf16[message.utf16.index(reader.currentIndex, offsetBy: 1)...])!
 
+        if type == .event, self.disableEventMessageParsing {
+            return SocketPacket(type: type, data: ["rawMessage", dataArray], id: Int(idString) ?? -1, nsp: namespace, placeholders: placeholders)
+        }
+
         if (type == .error || type == .connect) && !dataArray.hasPrefix("[") && !dataArray.hasSuffix("]") {
             dataArray = "[" + dataArray + "]"
         }