From 3645e4440e51700d826d757dd05a0b2b80c79ff0 Mon Sep 17 00:00:00 2001
From: M66B <M66B@users.noreply.github.com>
Date: Sun, 4 Sep 2022 11:40:20 +0200
Subject: [PATCH] Whois improvement

---
 app/src/main/java/eu/faircode/email/Whois.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/eu/faircode/email/Whois.java b/app/src/main/java/eu/faircode/email/Whois.java
index 897af779b5..4e69be3ded 100644
--- a/app/src/main/java/eu/faircode/email/Whois.java
+++ b/app/src/main/java/eu/faircode/email/Whois.java
@@ -25,6 +25,7 @@ import java.net.Socket;
 import java.net.UnknownHostException;
 
 public class Whois {
+    // https://datatracker.ietf.org/doc/html/rfc812
     private static final int WHOIS_PORT = 43;
     private static final int WHOIS_TIMEOUT = 15 * 1000; // milliseconds
 
@@ -40,7 +41,7 @@ public class Whois {
         Socket socket = new Socket();
         socket.connect(new InetSocketAddress(host, port), WHOIS_TIMEOUT);
         try {
-            socket.getOutputStream().write((domain + "\n").getBytes());
+            socket.getOutputStream().write((domain + "\r\n").getBytes());
             return host + ":" + port + "\n" + Helper.readStream(socket.getInputStream());
         } finally {
             socket.close();