我正在尝试制作TCP服务器和TCP客户端。我使用Arduino完成了服务器。
void setup() {
pinMode(button, INPUT);
//Connnect to WiFi Network
Serial.begin(115200);
WiFi.begin(ssid,password);
Serial.println("");
//Wait for connection
while (WiFi.status()!=WL_CONNECTED)
{
delay(500);
Serial.print(".");
}
//Print status to Serial Monitor
Serial.print("connected to: "); Serial.println(ssid);
Serial.print("IP Address: "); Serial.println(WiFi.localIP());
//Start the TCP server
server.begin();
}
void loop() {
client = server.available();
client.setTimeout(10000);
str=client.readStringUntil('\n');
if(client){
if(client.connected()){
Serial.println("connected to client");
if(str=="take")
{
// read the state of the pushbutton value:
buttonState = digitalRead(button);
if (buttonState == HIGH) {
client.println("open!");
} else {
client.println("close");
}
}
else{
client.println("error");
}
client.flush();
client.stop();
}
}
}
我认为服务器正在运行，因为一切都适用于netcat。 客户端部分是一个Android应用程序，我已经做了。这个概念是当我按下应用程序中的按钮时，套接字必须连接到服务器并更改EditText文本。每次程序停止时按下按钮。当我调试程序时，我得出结论，问题是创建套接字。服务器IP是192.168.1.106，端口是3030.创建套接字我错了吗？
View.OnClickListener btns=new View.OnClickListener() {
public void onClick(View view) {
EditText et = (EditText) findViewById(R.id.edittext);
String str = et.getText().toString();
String sentence;
// int mTimeout=10000;
String modifiedSentence;
BufferedReader inFromUser = new BufferedReader(new InputStreamReader(System.in));
try {
//clientSocket.setSoTimeout(mTimeout);
InetAddress ip=InetAddress.getByName("192.168.1.106");
Socket clientSocket = new Socket(ip,3030);
DataOutputStream outToServer = new DataOutputStream(clientSocket.getOutputStream());
BufferedReader inFromServer = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
sentence = inFromUser.readLine();
outToServer.writeBytes(sentence + '\n');
modifiedSentence = inFromServer.readLine();
et.setText(modifiedSentence);
clientSocket.close();
} catch (IOException e) {
System.out.println("Exception "+e);
}
}
};