From bf4acfe4550949bc1df3a4fca7b8cb201255614b Mon Sep 17 00:00:00 2001
From: Kevin Delannoy <kevin.delannoy@thescore.com>
Date: Sun, 2 Dec 2018 14:22:55 -0500
Subject: [PATCH] Exposed a method to ping

---
 Sources/ApolloWebSocket/WebSocketTransport.swift | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Sources/ApolloWebSocket/WebSocketTransport.swift b/Sources/ApolloWebSocket/WebSocketTransport.swift
index 6c21ef2626..0c4c037242 100644
--- a/Sources/ApolloWebSocket/WebSocketTransport.swift
+++ b/Sources/ApolloWebSocket/WebSocketTransport.swift
@@ -78,7 +78,11 @@ public class WebSocketTransport: NetworkTransport, WebSocketDelegate {
   public func isConnected() -> Bool {
     return websocket.isConnected
   }
-  
+
+  public func ping(data: Data, completionHandler: (() -> Void)? = nil) {
+    return websocket.write(ping: data, completion: completionHandler)
+  }
+
   private func processMessage(socket: WebSocketClient, text: String) {
     OperationMessage(serialized: text).parse { (type, id, payload, error) in
       guard let type = type, let messageType = OperationMessage.Types(rawValue: type) else {