snapshot of https://github.com/jitsi/jitsi-meet.git @ fd1749dd28f4138aa80234fc7f311b19aaffa0e7 (2026-09-15)

ios/app/broadcast-extension/SocketConnection.swift

@@ -0,0 +1,205 @@
+/*
+ * Copyright @ 2021-present 8x8, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import Foundation
+
+class SocketConnection: NSObject {
+    var didOpen: (() -> Void)?
+    var didClose: ((Error?) -> Void)?
+    var streamHasSpaceAvailable: (() -> Void)?
+
+    private let filePath: String
+    private var socketHandle: Int32 = -1
+    private var address: sockaddr_un?
+
+    private var inputStream: InputStream?
+    private var outputStream: OutputStream?
+    
+    private var networkQueue: DispatchQueue?
+    private var shouldKeepRunning = false
+
+    init?(filePath path: String) {
+        filePath = path
+        socketHandle = Darwin.socket(AF_UNIX, SOCK_STREAM, 0)
+
+        guard socketHandle != -1 else {
+            print("failure: create socket")
+            return nil
+        }
+    }
+
+    func open() -> Bool {
+        print("open socket connection")
+
+        guard FileManager.default.fileExists(atPath: filePath) else {
+            print("failure: socket file missing")
+            return false
+        }
+      
+        guard setupAddress() == true else {
+            return false
+        }
+        
+        guard connectSocket() == true else {
+            return false
+        }
+
+        setupStreams()
+        
+        inputStream?.open()
+        outputStream?.open()
+
+        return true
+    }
+
+    func close() {
+        unscheduleStreams()
+
+        inputStream?.delegate = nil
+        outputStream?.delegate = nil
+
+        inputStream?.close()
+        outputStream?.close()
+        
+        inputStream = nil
+        outputStream = nil
+    }
+
+    func writeToStream(buffer: UnsafePointer<UInt8>, maxLength length: Int) -> Int {
+        return outputStream?.write(buffer, maxLength: length) ?? 0
+    }
+}
+
+extension SocketConnection: StreamDelegate {
+
+    func stream(_ aStream: Stream, handle eventCode: Stream.Event) {
+        switch eventCode {
+        case .openCompleted:
+            print("client stream open completed")
+            if aStream == outputStream {
+                didOpen?()
+            }
+        case .hasBytesAvailable:
+            if aStream == inputStream {
+                var buffer: UInt8 = 0
+                let numberOfBytesRead = inputStream?.read(&buffer, maxLength: 1)
+                if numberOfBytesRead == 0 && aStream.streamStatus == .atEnd {
+                    print("server socket closed")
+                    close()
+                    notifyDidClose(error: nil)
+                }
+            }
+        case .hasSpaceAvailable:
+            if aStream == outputStream {
+                streamHasSpaceAvailable?()
+            }
+        case .errorOccurred:
+            print("client stream error occurred: \(String(describing: aStream.streamError))")
+            close()
+            notifyDidClose(error: aStream.streamError)
+
+        default:
+            break
+        }
+    }
+}
+
+private extension SocketConnection {
+  
+    func setupAddress() -> Bool {
+        var addr = sockaddr_un()
+        guard filePath.count < MemoryLayout.size(ofValue: addr.sun_path) else {
+            print("failure: fd path is too long")
+            return false
+        }
+
+        _ = withUnsafeMutablePointer(to: &addr.sun_path.0) { ptr in
+            filePath.withCString {
+                strncpy(ptr, $0, filePath.count)
+            }
+        }
+        
+        address = addr
+        return true
+    }
+
+    func connectSocket() -> Bool {
+        guard var addr = address else {
+            return false
+        }
+        
+        let status = withUnsafePointer(to: &addr) { ptr in
+            ptr.withMemoryRebound(to: sockaddr.self, capacity: 1) {
+                Darwin.connect(socketHandle, $0, socklen_t(MemoryLayout<sockaddr_un>.size))
+            }
+        }
+
+        guard status == noErr else {
+            print("failure: \(status)")
+            return false
+        }
+        
+        return true
+    }
+
+    func setupStreams() {
+        var readStream: Unmanaged<CFReadStream>?
+        var writeStream: Unmanaged<CFWriteStream>?
+
+        CFStreamCreatePairWithSocket(kCFAllocatorDefault, socketHandle, &readStream, &writeStream)
+
+        inputStream = readStream?.takeRetainedValue()
+        inputStream?.delegate = self
+        inputStream?.setProperty(kCFBooleanTrue, forKey: Stream.PropertyKey(kCFStreamPropertyShouldCloseNativeSocket as String))
+
+        outputStream = writeStream?.takeRetainedValue()
+        outputStream?.delegate = self
+        outputStream?.setProperty(kCFBooleanTrue, forKey: Stream.PropertyKey(kCFStreamPropertyShouldCloseNativeSocket as String))
+
+        scheduleStreams()
+    }
+  
+    func scheduleStreams() {
+        shouldKeepRunning = true
+        
+        networkQueue = DispatchQueue.global(qos: .userInitiated)
+        networkQueue?.async { [weak self] in
+            self?.inputStream?.schedule(in: .current, forMode: .common)
+            self?.outputStream?.schedule(in: .current, forMode: .common)
+            
+            var isRunning = false
+                        
+            repeat {
+                isRunning = self?.shouldKeepRunning ?? false && RunLoop.current.run(mode: .default, before: .distantFuture)
+            } while (isRunning)
+        }
+    }
+    
+    func unscheduleStreams() {
+        networkQueue?.sync { [weak self] in
+            self?.inputStream?.remove(from: .current, forMode: .common)
+            self?.outputStream?.remove(from: .current, forMode: .common)
+        }
+        
+        shouldKeepRunning = false
+    }
+    
+    func notifyDidClose(error: Error?) {
+        if didClose != nil {
+            didClose?(error)
+        }
+    }
+}