Treat transport open as joining the default namespace

SocketIO-MacTests/SocketSideEffectTest.swift

@@ -8,6 +8,7 @@
 
 import XCTest
 @testable import SocketIO
+import Starscream
 
 class SocketSideEffectTest: XCTestCase {
     func testInitialCurrentAck() {
@@ -86,6 +87,8 @@ class SocketSideEffectTest: XCTestCase {
     func testHandleOnceClientEvent() {
         let expect = expectation(description: "handled event")
 
+        socket.setTestStatus(.connecting)
+
         socket.once(clientEvent: .connect) {data, ack in
             XCTAssertEqual(self.socket.testHandlers.count, 0)
             expect.fulfill()
@@ -249,6 +252,7 @@ class SocketSideEffectTest: XCTestCase {
         let expect = expectation(description: "The client should call the timeout function")
 
         socket.setTestStatus(.notConnected)
+        socket.engine = TestEngine(client: socket, url: socket.socketURL, options: nil)
 
         socket.connect(timeoutAfter: 0.5, withHandler: {
             expect.fulfill()
@@ -261,6 +265,7 @@ class SocketSideEffectTest: XCTestCase {
         let expect = expectation(description: "The client should not call the timeout function")
 
         socket.setTestStatus(.notConnected)
+        socket.engine = TestEngine(client: socket, url: socket.socketURL, options: nil)
 
         socket.on(clientEvent: .connect) {data, ack in
             expect.fulfill()
@@ -283,6 +288,8 @@ class SocketSideEffectTest: XCTestCase {
         let nspString = "/swift"
 
         socket.setTestStatus(.notConnected)
+        socket.nsp = nspString
+        socket.engine = TestEngine(client: socket, url: socket.socketURL, options: nil)
 
         socket.on(clientEvent: .connect) {data, ack in
             guard let nsp = data[0] as? String else {
@@ -390,3 +397,35 @@ struct ThrowingData : SocketData {
     }
 
 }
+
+class TestEngine : SocketEngineSpec {
+    var client: SocketEngineClient? = nil
+    private(set) var closed = false
+    private(set) var connected = false
+    var connectParams: [String: Any]? = nil
+    private(set) var cookies: [HTTPCookie]? = nil
+    private(set) var engineQueue = DispatchQueue.main
+    private(set) var extraHeaders: [String: String]? = nil
+    private(set) var fastUpgrade = false
+    private(set) var forcePolling = false
+    private(set) var forceWebsockets = false
+    private(set) var polling = false
+    private(set) var probing = false
+    private(set) var sid = ""
+    private(set) var socketPath = ""
+    private(set) var urlPolling = URL(string: "http://localhost/")!
+    private(set) var urlWebSocket = URL(string: "http://localhost/")!
+    private(set) var websocket = false
+    private(set) var ws: WebSocket? = nil
+
+    required init(client: SocketEngineClient, url: URL, options: NSDictionary?) { }
+
+    func connect() { }
+    func didError(reason: String) { }
+    func disconnect(reason: String) { }
+    func doFastUpgrade() { }
+    func flushWaitingForPostToWebSocket() { }
+    func parseEngineData(_ data: Data) { }
+    func parseEngineMessage(_ message: String) { }
+    func write(_ msg: String, withType type: SocketEnginePacketType, withData data: [Data]) { }
+}

Source/SocketIO/Client/SocketIOClient.swift

@@ -110,7 +110,7 @@ open class SocketIOClient : NSObject, SocketIOClientSpec, SocketEngineClient, So
 
     /// The engine for this client.
     @objc
-    public private(set) var engine: SocketEngineSpec?
+    public internal(set) var engine: SocketEngineSpec?
 
     /// The array of handlers for this socket.
     public private(set) var handlers = [SocketEventHandler]()
@@ -244,6 +244,8 @@ open class SocketIOClient : NSObject, SocketIOClientSpec, SocketEngineClient, So
     ///
     /// - parameter toNamespace: The namespace that was connected to.
     open func didConnect(toNamespace namespace: String) {
+        guard status != .connected else { return }
+
         DefaultSocketLogger.Logger.log("Socket connected", type: SocketIOClient.logType)
 
         status = .connected
@@ -434,7 +436,21 @@ open class SocketIOClient : NSObject, SocketIOClientSpec, SocketEngineClient, So
     ///
     /// - parameter reason: The reason the engine opened.
     open func engineDidOpen(reason: String) {
-        DefaultSocketLogger.Logger.log(reason, type: SocketIOClient.logType)
+        handleQueue.async {
+            self._engineDidOpen(reason: reason)
+        }
+    }
+
+    private func _engineDidOpen(reason: String) {
+        DefaultSocketLogger.Logger.log("Engine opened \(reason)", type: SocketIOClient.logType)
+
+        guard nsp != "/" else {
+            didConnect(toNamespace: "/")
+
+            return
+        }
+
+        joinNamespace(nsp)
     }
 
     /// Called when socket.io has acked one of our emits. Causes the corresponding ack callback to be called.
@@ -480,11 +496,11 @@ open class SocketIOClient : NSObject, SocketIOClientSpec, SocketEngineClient, So
     /// Call when you wish to leave a namespace and return to the default namespace.
     @objc
     open func leaveNamespace() {
-        if nsp != "/" {
+        guard nsp != "/" else { return }
+
         engine?.send("1\(nsp)", withData: [])
         nsp = "/"
     }
-    }
 
     /// Joins `namespace`.
     ///
@@ -493,13 +509,13 @@ open class SocketIOClient : NSObject, SocketIOClientSpec, SocketEngineClient, So
     /// - parameter namespace: The namespace to join.
     @objc
     open func joinNamespace(_ namespace: String) {
-        nsp = namespace
+        guard namespace != "/" else { return }
 
-        if nsp != "/" {
-            DefaultSocketLogger.Logger.log("Joining namespace", type: SocketIOClient.logType)
+        DefaultSocketLogger.Logger.log("Joining namespace \(namespace)", type: SocketIOClient.logType)
+
+        nsp = namespace
         engine?.send("0\(nsp)", withData: [])
     }
-    }
 
     /// Removes handler(s) for a client event.
     ///

Source/SocketIO/Parse/SocketParsable.swift

@@ -71,14 +71,10 @@ public extension SocketParsable where Self: SocketIOClientSpec {
     }
 
     private func handleConnect(_ packetNamespace: String) {
-        // If we connected with a namespace, check if we've joined the default namespace first, then switch to the
-        // other namespace
-        if packetNamespace == "/" && nsp != "/" {
-            joinNamespace(nsp)
-        } else {
+        guard packetNamespace == nsp else { return }
+
         didConnect(toNamespace: packetNamespace)
     }
-    }
 
     private func handlePacket(_ pack: SocketPacket) {
         switch pack.type {