Java/Scala¶

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.InetAddress;
import java.net.Socket;
import java.net.URLEncoder;

public class Main {
  public static void main(String[] argv) throws Exception {
    String data = URLEncoder.encode("key1", "UTF-8")
      + "=" + URLEncoder.encode("value1", "UTF-8");

    String host = "httpbin.org";
    Socket socket = new Socket(host, 80);

    String path = "/post";
    BufferedWriter wr = new BufferedWriter(
        new OutputStreamWriter(socket.getOutputStream(), "UTF8")
    );
    wr.write("POST " + path + " HTTP/1.1\r\n");
    wr.write("Host: " + host + "\r\n");
    wr.write("Content-Length: " + data.length() + "\r\n");
    wr.write("Content-Type: application/x-www-form-urlencoded\r\n");
    wr.write("\r\n");

    wr.write(data);
    wr.flush();

    BufferedReader rd = new BufferedReader(
        new InputStreamReader(socket.getInputStream())
    );
    String line;
    while ((line = rd.readLine()) != null) {
      System.out.println(line);
    }
    wr.close();
    rd.close();
  }
}