質問編集履歴
2
補足
title
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File without changes
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body
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@@ -119,4 +119,7 @@
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119
119
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120
120
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このようなエラーが出てしまい、直せなくて困っています。
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121
121
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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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122
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-
どなたかご教授願いたいです。
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122
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+
どなたかご教授願いたいです。
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123
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+
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124
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+
補足
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125
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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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File without changes
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@@ -2,6 +2,116 @@
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2
2
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そこで
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3
3
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[https://qiita.com/sensuikan1973/items/76c0bd861564859ebe4c](https://qiita.com/sensuikan1973/items/76c0bd861564859ebe4c)
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4
4
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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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5
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+
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6
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+
```ここに言語を入力
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7
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+
import UIKit
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8
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+
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9
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class ViewController: UIViewController {
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10
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+
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11
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var Connection1 = Connection()
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12
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+
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13
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+
@IBOutlet weak var TB_SendCommand: UITextField!
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14
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+
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15
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+
@IBAction func BT_Connect(sendr: AnyObject){
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16
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Connection1.connect()
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17
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}
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18
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+
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19
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@IBAction func BT_Send(sendr: AnyObject){
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20
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//テキストの文字を取得してsendCommand()を行う
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21
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+
let sendtext = TB_SendCommand.text
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22
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+
if ((sendtext! as NSString).length > 0) {
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23
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Connection1.sendCommand(command: sendtext!)
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24
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+
}
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25
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+
}
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26
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+
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27
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+
@IBAction func BT_End(sendr: AnyObject){
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28
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+
Connection1.sendCommand(command: "end")
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29
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+
}
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30
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+
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31
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+
override func viewDidLoad() {
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32
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+
super.viewDidLoad()
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33
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+
// Do any additional setup after loading the view, typically from a nib.
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34
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+
}
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35
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+
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36
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+
override func didReceiveMemoryWarning() {
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37
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+
super.didReceiveMemoryWarning()
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38
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+
// Dispose of any resources that can be recreated.
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39
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+
}
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40
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+
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41
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+
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42
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+
}
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43
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+
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44
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+
class Connection: NSObject, StreamDelegate {
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45
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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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46
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+
let serverPort: UInt32 = xxxx //開放するポートを指定
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47
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+
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48
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+
private var inputStream : InputStream!
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49
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+
private var outputStream: OutputStream!
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50
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+
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51
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+
//**
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52
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+
/* @brief サーバーとの接続を確立する
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53
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+
*/
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54
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+
func connect(){
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55
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+
print("connecting.....")
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56
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+
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57
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+
var readStream : Unmanaged<CFReadStream>?
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58
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+
var writeStream: Unmanaged<CFWriteStream>?
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59
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+
|
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60
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+
CFStreamCreatePairWithSocketToHost(nil, self.ServerAddress, self.serverPort, &readStream, &writeStream)
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61
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+
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62
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+
self.inputStream = readStream!.takeRetainedValue()
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63
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+
self.outputStream = writeStream!.takeRetainedValue()
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64
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+
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65
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+
self.inputStream.delegate = self
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66
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+
self.outputStream.delegate = self
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67
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+
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68
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+
self.inputStream.schedule(in: RunLoop.current, forMode: RunLoopMode.defaultRunLoopMode)
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69
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+
self.outputStream.schedule(in: RunLoop.current, forMode: RunLoopMode.defaultRunLoopMode)
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70
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+
|
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71
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+
self.inputStream.open()
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72
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+
self.outputStream.open()
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73
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+
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74
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print("connect success!!")
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75
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+
}
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76
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+
|
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77
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+
//**
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78
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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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|
79
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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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|
80
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+
*/
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81
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+
func stream(_ stream:Stream, handle eventCode : Stream.Event){
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82
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+
//print(stream)
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83
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+
}
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84
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+
|
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85
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+
//**
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|
86
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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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|
87
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+
*/
|
|
88
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+
func sendCommand(command: String){
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|
89
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+
var ccommand = command.data(using: String.Encoding.utf8, allowLossyConversion: false)!
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|
90
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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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91
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+
self.outputStream.write(UnsafePointer(text), maxLength: text.utf8.count)
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92
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+
print("Send: (command)")
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93
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+
|
|
94
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+
//"end"を受信したら接続切断
|
|
95
|
+
if (String(describing: command) == "end") {
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|
96
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+
self.outputStream.close()
|
|
97
|
+
self.outputStream.remove(from: RunLoop.current, forMode: RunLoopMode.defaultRunLoopMode)
|
|
98
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+
|
|
99
|
+
while(!inputStream.hasBytesAvailable){}
|
|
100
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+
let bufferSize = 1024
|
|
101
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+
var buffer = Array<UInt8>(repeating: 0, count: bufferSize)
|
|
102
|
+
let bytesRead = inputStream.read(&buffer, maxLength: bufferSize)
|
|
103
|
+
if (bytesRead >= 0) {
|
|
104
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+
let read = String(bytes: buffer, encoding: String.Encoding.utf8)!
|
|
105
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+
print("Receive: (read)")
|
|
106
|
+
}
|
|
107
|
+
self.inputStream.close()
|
|
108
|
+
self.inputStream.remove(from: RunLoop.current, forMode: RunLoopMode.defaultRunLoopMode)
|
|
109
|
+
}
|
|
110
|
+
}
|
|
111
|
+
|
|
112
|
+
}
|
|
113
|
+
```
|
|
114
|
+
|
|
5
115
|
しかし、
|
|
6
116
|
|
|
7
117
|
RangeText="self.outputStream.write(UnsafePointer(text), maxLength: text.utf8.count)"
|