- Tue May 24, 2016 5:51 pm
#47969
Hello everyone!
I am trying to connect my ESP to a socket server using java.
But I'm having problems in comunication, the esp not complete the comunication and the server stay waiting for
...
Can someone help me? Already thanks!
This is the client side, the esp8266 code:
And the java code is:
I am trying to connect my ESP to a socket server using java.
But I'm having problems in comunication, the esp not complete the comunication and the server stay waiting for
...Can someone help me? Already thanks!
This is the client side, the esp8266 code:
Code: Select all
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
const char* ssid = "myssid";
const char* pass = "mypassword";
const char* host = "theIPwhereJavaSocketis";
void setup() {
delay(500);
Serial.begin(38400);
Serial.println();
Serial.print("conecting to: ");
Serial.println(ssid);
Serial.println("Try to connect to server: ");
Serial.println(host);
WiFi.mode(WIFI_STA);
delay(1000);
WiFi.begin(ssid, pass);
//IPAddress subnet(255,255,255,0);
//WiFi.config(IPAddress(192,168,1,150),IPAddress(192,168,1,10),subnet);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.print(".");
}
Serial.println();
Serial.print("My IP: ");
Serial.println(WiFi.localIP());
long rssi = WiFi.RSSI();
Serial.print("RSSI: ");
Serial.print(rssi);
Serial.println(" dBm");
}
void loop() {
WiFiClient client;
if (!client.connect(host,3000)) { //The problem start here
Serial.println(".");
return;
}
Serial.println();
Serial.print("Conected to IP: ");
Serial.println(host);
Serial.println("Sending string to server: ");
client.println("OK");
delay(100);
String line = client.readStringUntil('\n');
Serial.print(line);
Serial.println();
Serial.println("Closing connection");
client.flush();
client.stop();
Serial.println("Connection Closed");
}And the java code is:
Code: Select all
import java.io.IOException;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Scanner;
public class ServerEcho {
public static void main(String[] args) throws UnknownHostException, IOException {
ServerSocket ss;
Socket x;
PrintWriter output;
Scanner input;
String msg1;
ss = new ServerSocket(3000);
x = ss.accept();
System.out.println("Connection ok \n");
input = new Scanner(x.getInputStream());
output = new PrintWriter(x.getOutputStream(), true);
do {
msg1 = input.nextLine();
System.out.println("Message received \n");
System.out.println(msg1);
//System.out.println("Sending back \n");
//output.println(msg1);
} while (!msg1.equals("bye"));
x.close();
ss.close();
}
}
