Update README.md

README.md

@@ -1,3 +1,62 @@
-# iperf-swift
+# Swift wrapper for iPerf
 
-A description of this package.
+An appliction using this package: [iPerf SwiftUI](https://github.com/igorskh/iperf-swiftui)
+
+Package implements iPerf server and client.
+
+Usage example:
+```swift
+class IperfRunnerController: ObservableObject, Identifiable {
+    private var iperfRunner: IperfRunner?
+
+    @Published var isDeleted = false
+    @Published var runnerState: IperfRunnerState = .ready
+    @Published var debugDescription: String = ""
+    @Published var displayError: Bool = false
+    @Published var results = [IperfIntervalResult]() {
+        didSet {
+            objectWillChange.send()
+        }
+    }
+
+    func onResultReceived(result: IperfIntervalResult) {
+        if result.streams.count > 0 {
+            results.append(result)
+        }
+    }
+
+    func onErrorReceived(error: IperfError) {
+        DispatchQueue.main.async {
+            self.displayError = error != .IENONE
+            self.debugDescription = error.debugDescription
+        }
+    }
+
+    func onNewState(state: IperfRunnerState) {
+        if state != .unknown && state != runnerState {
+            DispatchQueue.main.async {
+                self.runnerState = state
+            }
+        }
+    }
+
+    func start() {
+        self.formInput = formInput
+
+        results = []
+        debugDescription = ""
+
+        iperfRunner = IperfRunner(with: IperfConfiguration())
+        iperfRunner!.start(
+            onResultReceived,
+            onErrorReceived,
+            onNewState
+        )
+    }
+
+    func stop() {
+        iperfRunner!.stop()
+    }
+}
+
+```