質問編集履歴
2
補足
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@@ -241,3 +241,9 @@
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調べたところポインタが初期化されていないと出てしまうエラーではないかと思うのですが、改善の方法がわかりません。
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どなたかご教授願いたいです。
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補足
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このアプリでは入力した任意の文字列をサーバー側に送るプログラムとなっていますが、もしも入力なしで固定の文字（例えば"1"）を送る方法がありましたらそちらもご教授願いたいです。
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1
ソースコードの挿入
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@@ -6,6 +6,226 @@
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上記のサイトを参考にさせていただき進めています。
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```ここに言語を入力
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import UIKit
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class ViewController: UIViewController {
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var Connection1 = Connection()
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@IBOutlet weak var TB_SendCommand: UITextField!
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@IBAction func BT_Connect(sendr: AnyObject){
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Connection1.connect()
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}
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@IBAction func BT_Send(sendr: AnyObject){
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//テキストの文字を取得してsendCommand()を行う
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let sendtext = TB_SendCommand.text
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if ((sendtext! as NSString).length > 0) {
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Connection1.sendCommand(command: sendtext!)
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}
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}
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@IBAction func BT_End(sendr: AnyObject){
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Connection1.sendCommand(command: "end")
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}
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override func viewDidLoad() {
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super.viewDidLoad()
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// Do any additional setup after loading the view, typically from a nib.
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}
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override func didReceiveMemoryWarning() {
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super.didReceiveMemoryWarning()
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// Dispose of any resources that can be recreated.
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}
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}
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class Connection: NSObject, StreamDelegate {
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let ServerAddress: CFString = NSString(string: "xxx.xxx.xxx.xxx") //IPアドレスを指定
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let serverPort: UInt32 = xxxx //開放するポートを指定
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private var inputStream : InputStream!
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private var outputStream: OutputStream!
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//**
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/* @brief サーバーとの接続を確立する
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*/
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func connect(){
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print("connecting.....")
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var readStream : Unmanaged<CFReadStream>?
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var writeStream: Unmanaged<CFWriteStream>?
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CFStreamCreatePairWithSocketToHost(nil, self.ServerAddress, self.serverPort, &readStream, &writeStream)
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self.inputStream = readStream!.takeRetainedValue()
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self.outputStream = writeStream!.takeRetainedValue()
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self.inputStream.delegate = self
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self.outputStream.delegate = self
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self.inputStream.schedule(in: RunLoop.current, forMode: RunLoopMode.defaultRunLoopMode)
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self.outputStream.schedule(in: RunLoop.current, forMode: RunLoopMode.defaultRunLoopMode)
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self.inputStream.open()
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self.outputStream.open()
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print("connect success!!")
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}
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//**
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/* @brief inputStream/outputStreamに何かしらのイベントが起きたら起動してくれる関数
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157
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* 今回の場合では、同期型なのでoutputStreamの時しか起動してくれない
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*/
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160
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func stream(_ stream:Stream, handle eventCode : Stream.Event){
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//print(stream)
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}
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//**
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/* @brief サーバーにコマンド文字列を送信する関数
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*/
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func sendCommand(command: String){
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var ccommand = command.data(using: String.Encoding.utf8, allowLossyConversion: false)!
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let text = ccommand.withUnsafeMutableBytes{ bytes in return String(bytesNoCopy: bytes, length: ccommand.count, encoding: String.Encoding.utf8, freeWhenDone: false)!}
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self.outputStream.write(UnsafePointer(text), maxLength: text.utf8.count)
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print("Send: (command)")
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//"end"を受信したら接続切断
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if (String(describing: command) == "end") {
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self.outputStream.close()
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self.outputStream.remove(from: RunLoop.current, forMode: RunLoopMode.defaultRunLoopMode)
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while(!inputStream.hasBytesAvailable){}
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let bufferSize = 1024
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var buffer = Array<UInt8>(repeating: 0, count: bufferSize)
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let bytesRead = inputStream.read(&buffer, maxLength: bufferSize)
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if (bytesRead >= 0) {
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let read = String(bytes: buffer, encoding: String.Encoding.utf8)!
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print("Receive: (read)")
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}
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self.inputStream.close()
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self.inputStream.remove(from: RunLoop.current, forMode: RunLoopMode.defaultRunLoopMode)
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}
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}
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}
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```
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9
229
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しかし、
|
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10
230
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11
231
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