Change sentPing/gotPong to ping/pong since those are already reserved

Source/SocketIO/Client/SocketIOClient.swift

@@ -463,7 +463,7 @@ open class SocketIOClient : NSObject, SocketIOClientSpec, SocketEngineClient, So
     }
 
     private func _engineDidReceivePong() {
-        handleClientEvent(.gotPong, data: [])
+        handleClientEvent(.pong, data: [])
     }
 
     /// Called when the sends a ping to the server.
@@ -474,7 +474,7 @@ open class SocketIOClient : NSObject, SocketIOClientSpec, SocketEngineClient, So
     }
 
     private func _engineDidSendPing() {
-        handleClientEvent(.sentPing, data: [])
+        handleClientEvent(.ping, data: [])
     }
 
     /// Called when socket.io has acked one of our emits. Causes the corresponding ack callback to be called.

Source/SocketIO/Client/SocketIOClientSpec.swift

@@ -267,16 +267,27 @@ public enum SocketClientEvent : String {
     /// ```
     case error
 
+    /// Emitted whenever the engine sends a ping.
+    ///
+    /// Usage:
+    ///
+    /// ```swift
+    /// socket.on(clientEvent: .ping) {_, _ in
+    ///   // Maybe keep track of latency?
+    /// }
+    /// ```
+    case ping
+
     /// Emitted whenever the engine gets a pong.
     ///
     /// Usage:
     ///
     /// ```swift
-    /// socket.on(clientEvent: .gotPong) {_, _ in
+    /// socket.on(clientEvent: .pong) {_, _ in
     ///   // Maybe keep track of latency?
     /// }
     /// ```
-    case gotPong
+    case pong
 
     /// Emitted when the client begins the reconnection process.
     ///
@@ -300,17 +311,6 @@ public enum SocketClientEvent : String {
     /// ```
     case reconnectAttempt
 
-    /// Emitted whenever the engine sends a ping.
-    ///
-    /// Usage:
-    ///
-    /// ```swift
-    /// socket.on(clientEvent: .sentPing) {_, _ in
-    ///   // Maybe keep track of latency?
-    /// }
-    /// ```
-    case sentPing
-
     /// Emitted every time there is a change in the client's status.
     ///
     /// Usage:

Tests/TestSocketIO/SocketSideEffectTest.swift

@@ -413,9 +413,9 @@ class SocketSideEffectTest: XCTestCase {
     }
 
     func testClientCallsSentPingHandler() {
-        let expect = expectation(description: "The client should emit a sentPing event")
+        let expect = expectation(description: "The client should emit a ping event")
 
-        socket.on(clientEvent: .sentPing) {data, ack in
+        socket.on(clientEvent: .ping) {data, ack in
             expect.fulfill()
         }
 
@@ -425,9 +425,9 @@ class SocketSideEffectTest: XCTestCase {
     }
 
     func testClientCallsGotPongHandler() {
-        let expect = expectation(description: "The client should emit a gotPong event")
+        let expect = expectation(description: "The client should emit a pong event")
 
-        socket.on(clientEvent: .gotPong) {data, ack in
+        socket.on(clientEvent: .pong) {data, ack in
             expect.fulfill()
         }