init

ios/Sources/SocketsPlugin/Socket.swift

@@ -0,0 +1,91 @@
+import Foundation
+import Network
+
+protocol SocketDelegate: AnyObject {
+    func didChangeState(socket: String, state: SocketState)
+    func didReceiveMessage(socket: String, message: String)
+}
+
+public class Socket: NSObject {
+    
+    var id: String
+    var host: String
+    var port: Int
+    var useTLS: Bool
+    var acceptInvalidCertificates: Bool
+    
+    var connection: NWConnection?
+    
+    weak var delegate: SocketDelegate?
+    
+    public init(id: String, host: String, port: Int, useTLS: Bool, acceptInvalidCertificates: Bool) {
+        self.id = id
+        self.host = host
+        self.port = port
+        
+        self.useTLS = useTLS
+        self.acceptInvalidCertificates = acceptInvalidCertificates
+    }
+    
+    public func connect() {
+        let connection = NWConnection(host: NWEndpoint.Host(self.host), port: NWEndpoint.Port(String(self.port))!, using: .tcp)
+        connection.stateUpdateHandler = self.stateDidChange(to:)
+        self.receive(on: connection)
+        connection.start(queue: .main)
+        self.connection = connection
+    }
+    
+    public func write(_ message: String) {
+        if let data = message.data(using: .utf8) {
+            connection?.send(content: data, completion: .idempotent)
+        }
+    }
+    
+    public func disconnect() {
+        connection?.forceCancel()
+    }
+    
+    func stateDidChange(to state: NWConnection.State) {
+        switch state {
+            case .setup:
+                print("connection setup")
+                break
+                
+            case .waiting(let error):
+                print("connection waiting: \(error)")
+                break
+                
+            case .preparing:
+                self.delegate?.didChangeState(socket: self.id, state: .connecting)
+                break
+                
+            case .ready:
+                self.delegate?.didChangeState(socket: self.id, state: .connected)
+                break
+                
+            case .failed(let error):
+                print("connection failed: \(error)")
+                break
+                
+            case .cancelled:
+                self.delegate?.didChangeState(socket: self.id, state: .disconnected)
+                break
+            
+            default:
+                print("other")
+                break
+        }
+    }
+    
+    func receive(on connection: NWConnection) {
+        connection.receive(minimumIncompleteLength: 1, maximumLength: 65536) { (data, contentContext, isComplete, error) in
+            if let data = data, !data.isEmpty {
+                if let message = String(data: data, encoding: .utf8)?.trimmingCharacters(in: .whitespacesAndNewlines) {
+                    self.delegate?.didReceiveMessage(socket: self.id, message: message)
+                }
+            }
+            self.receive(on: connection)
+        }
+    }
+    
+}

ios/Sources/SocketsPlugin/Sockets.swift

@@ -1,8 +1,65 @@
 import Foundation
 
-@objc public class Sockets: NSObject {
-    @objc public func echo(_ value: String) -> String {
-        print(value)
-        return value
+enum SocketState:String {
+    case connecting = "connecting"
+    case connected = "connected"
+    case disconnected = "disconnected"
+}
+
+@objc public class Sockets: NSObject, SocketDelegate {
+    
+    private var sockets: [Socket] = []
+
+    private weak var plugin: SocketsPlugin?
+    @objc public init(plugin: SocketsPlugin? = nil) {
+        self.plugin = plugin
+    }
+    
+    func didChangeState(socket: String, state: SocketState) {
+        self.plugin?.notifyListeners("state", data: [
+            "id": socket,
+            "state": state.rawValue
+        ])
+    }
+    
+    func didReceiveMessage(socket: String, message: String) {
+        self.plugin?.notifyListeners("message", data: [
+            "id": socket,
+            "message": message
+        ])
+    }
+    
+    @objc public func create(id: String, host: String, port: Int, useTLS: Bool = false, acceptInvalidCertificates: Bool = false) -> Socket {
+        let socket = Socket(id: id, host: host, port: port, useTLS: useTLS, acceptInvalidCertificates: acceptInvalidCertificates)
+        socket.delegate = self
+        sockets.append(socket)
+        return socket
+    }
+
+    @objc public func connect(id: String) {
+        if let socket = self.socket(with: id) {
+            socket.connect()
+        }
+    }
+
+    @objc public func send(id: String, message: String) {
+        if let socket = self.socket(with: id) {
+            socket.write(message)
+        }
+    }
+
+    @objc public func disconnect(id: String) {
+        if let socket = self.socket(with: id) {
+            socket.disconnect()
+        }
+    }
+    
+    @objc func socket(with id: String) -> Socket? {
+        for socket in self.sockets {
+            if (socket.id == id) {
+                return socket
+            }
+        }
+        return nil
     }
 }

ios/Sources/SocketsPlugin/SocketsPlugin.swift

@@ -1,23 +1,50 @@
 import Foundation
 import Capacitor
 
-/**
- * Please read the Capacitor iOS Plugin Development Guide
- * here: https://capacitorjs.com/docs/plugins/ios
- */
 @objc(SocketsPlugin)
 public class SocketsPlugin: CAPPlugin, CAPBridgedPlugin {
+
+	private lazy var implementation: Sockets = {
+        return Sockets(plugin: self)
+    }()
+
     public let identifier = "SocketsPlugin"
     public let jsName = "Sockets"
     public let pluginMethods: [CAPPluginMethod] = [
-        CAPPluginMethod(name: "echo", returnType: CAPPluginReturnPromise)
+	    CAPPluginMethod(name: "create", returnType: CAPPluginReturnPromise),
+        CAPPluginMethod(name: "connect", returnType: CAPPluginReturnPromise),
+        CAPPluginMethod(name: "send", returnType: CAPPluginReturnPromise),
+        CAPPluginMethod(name: "disconnect", returnType: CAPPluginReturnPromise)
     ]
-    private let implementation = Sockets()
 
-    @objc func echo(_ call: CAPPluginCall) {
-        let value = call.getString("value") ?? ""
-        call.resolve([
-            "value": implementation.echo(value)
-        ])
+    @objc func create(_ call: CAPPluginCall) {
+        let id = call.getString("id") ?? UUID().uuidString
+        let host = call.getString("host") ?? ""
+        let port = call.getInt("port") ?? 0
+        
+        let useTLS = call.getBool("useTLS") ?? false
+        let acceptInvalidCertificates = call.getBool("acceptInvalidCertificates") ?? false
+        
+        let socket = implementation.create(id: id, host: host, port: port, useTLS: useTLS, acceptInvalidCertificates: acceptInvalidCertificates)
+        call.resolve()
     }
+
+    @objc func connect(_ call: CAPPluginCall) {
+		let id = call.getString("id") ?? ""
+		implementation.connect(id: id)
+        call.resolve()
+	}
+
+	@objc func send(_ call: CAPPluginCall) {
+		let id = call.getString("id") ?? ""
+		let message = call.getString("message") ?? ""
+		implementation.send(id: id, message: message)
+        call.resolve()
+	}
+
+	@objc func disconnect(_ call: CAPPluginCall) {
+		let id = call.getString("id") ?? ""
+		implementation.disconnect(id: id)
+        call.resolve()
+	}
 }