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Code Issues Releases Wiki Activity

Lookup whois server

This commit is contained in:
M66B 2022-09-04 10:09:05 +02:00
parent 1db18f5391
commit 09cb257e40
1 changed files with 12 additions and 3 deletions
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15
app/src/main/java/eu/faircode/email/Whois.java
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@ -21,13 +21,13 @@ package eu.faircode.email;
import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;
public class Whois {
private static final String WHOIS_HOST = "whois.internic.net";
private static final int WHOIS_PORT = 43;
static String get(String domain) throws IOException {
return get(domain, WHOIS_HOST, WHOIS_PORT);
return get(domain, getServer(domain), WHOIS_PORT);
}
static String get(String domain, String host) throws IOException {
@ -37,7 +37,16 @@ public class Whois {
static String get(String domain, String host, int port) throws IOException {
try (Socket socket = new Socket(host, port)) {
socket.getOutputStream().write((domain + "\n").getBytes());
return Helper.readStream(socket.getInputStream());
return host + ":" + port + "\n" + Helper.readStream(socket.getInputStream());
}
}
private static String getServer(String domain) throws IOException {
String who = get(domain, "whois.iana.org");
for (String w : who.split("\\r?\\n"))
if (w.startsWith("whois:"))
return w.substring(6).trim();
Log.w(who);
throw new UnknownHostException("whois server unknown " + domain);
}
}