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authorDaniel Gultsch <daniel@gultsch.de>2015-09-19 17:31:24 +0200
committerDaniel Gultsch <daniel@gultsch.de>2015-09-19 17:31:24 +0200
commita954e32b1673f5816f460dc1d434d148f35821ac (patch)
treef29476df813e74ac161a9a6d1ddc53bccfb1a5b1 /src
parent069ddddbc14a83b0b466a4d62033d17bb322b155 (diff)
let DnsHelper provide a fallback solution
Diffstat (limited to 'src')
-rw-r--r--src/main/java/eu/siacs/conversations/utils/DNSHelper.java9
-rw-r--r--src/main/java/eu/siacs/conversations/xmpp/XmppConnection.java75
2 files changed, 41 insertions, 43 deletions
diff --git a/src/main/java/eu/siacs/conversations/utils/DNSHelper.java b/src/main/java/eu/siacs/conversations/utils/DNSHelper.java
index 863cfb66b..f3c4f79a2 100644
--- a/src/main/java/eu/siacs/conversations/utils/DNSHelper.java
+++ b/src/main/java/eu/siacs/conversations/utils/DNSHelper.java
@@ -7,6 +7,7 @@ import android.net.LinkProperties;
import android.net.Network;
import android.os.Build;
import android.os.Bundle;
+import android.os.Parcelable;
import android.util.Log;
import java.io.IOException;
@@ -46,13 +47,19 @@ public class DNSHelper {
public static Bundle getSRVRecord(final Jid jid, Context context) throws IOException {
final String host = jid.getDomainpart();
final List<InetAddress> servers = Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP ? getDnsServers(context) : getDnsServersPreLollipop();
- Bundle b = null;
+ Bundle b = new Bundle();
for(InetAddress server : servers) {
b = queryDNS(host, server);
if (b.containsKey("values")) {
return b;
}
}
+ if (!b.containsKey("values")) {
+ Log.d(Config.LOGTAG,"all dns queries failed. provide fallback A record");
+ ArrayList<Parcelable> values = new ArrayList<>();
+ values.add(createNamePortBundle(host,5222));
+ b.putParcelableArrayList("values",values);
+ }
return b;
}
diff --git a/src/main/java/eu/siacs/conversations/xmpp/XmppConnection.java b/src/main/java/eu/siacs/conversations/xmpp/XmppConnection.java
index 655b5744f..fd6465021 100644
--- a/src/main/java/eu/siacs/conversations/xmpp/XmppConnection.java
+++ b/src/main/java/eu/siacs/conversations/xmpp/XmppConnection.java
@@ -160,52 +160,43 @@ public class XmppConnection implements Runnable {
}
} else {
final Bundle result = DNSHelper.getSRVRecord(account.getServer(),mXmppConnectionService);
- if (result == null) {
- throw new IOException("unhandled exception in DNS resolver");
- }
final ArrayList<Parcelable> values = result.getParcelableArrayList("values");
- if ("timeout".equals(result.getString("error"))) {
- throw new DnsTimeoutException();
- } else if (values != null) {
- int i = 0;
- boolean socketError = true;
- while (socketError && values.size() > i) {
- final Bundle namePort = (Bundle) values.get(i);
+ int i = 0;
+ boolean socketError = true;
+ while (socketError && values.size() > i) {
+ final Bundle namePort = (Bundle) values.get(i);
+ try {
+ String srvRecordServer;
try {
- String srvRecordServer;
- try {
- srvRecordServer = IDN.toASCII(namePort.getString("name"));
- } catch (final IllegalArgumentException e) {
- // TODO: Handle me?`
- srvRecordServer = "";
- }
- final int srvRecordPort = namePort.getInt("port");
- final String srvIpServer = namePort.getString("ip");
- final InetSocketAddress addr;
- if (srvIpServer != null) {
- addr = new InetSocketAddress(srvIpServer, srvRecordPort);
- Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
- + ": using values from dns " + srvRecordServer
- + "[" + srvIpServer + "]:" + srvRecordPort);
- } else {
- addr = new InetSocketAddress(srvRecordServer, srvRecordPort);
- Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
- + ": using values from dns "
- + srvRecordServer + ":" + srvRecordPort);
- }
- socket = new Socket();
- socket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
- socketError = false;
- } catch (final Throwable e) {
- Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage());
- i++;
+ srvRecordServer = IDN.toASCII(namePort.getString("name"));
+ } catch (final IllegalArgumentException e) {
+ // TODO: Handle me?`
+ srvRecordServer = "";
}
+ final int srvRecordPort = namePort.getInt("port");
+ final String srvIpServer = namePort.getString("ip");
+ final InetSocketAddress addr;
+ if (srvIpServer != null) {
+ addr = new InetSocketAddress(srvIpServer, srvRecordPort);
+ Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
+ + ": using values from dns " + srvRecordServer
+ + "[" + srvIpServer + "]:" + srvRecordPort);
+ } else {
+ addr = new InetSocketAddress(srvRecordServer, srvRecordPort);
+ Log.d(Config.LOGTAG, account.getJid().toBareJid().toString()
+ + ": using values from dns "
+ + srvRecordServer + ":" + srvRecordPort);
+ }
+ socket = new Socket();
+ socket.connect(addr, Config.SOCKET_TIMEOUT * 1000);
+ socketError = false;
+ } catch (final Throwable e) {
+ Log.d(Config.LOGTAG, account.getJid().toBareJid().toString() + ": " + e.getMessage());
+ i++;
}
- if (socketError) {
- throw new UnknownHostException();
- }
- } else {
- throw new IOException("unhandled exception in DNS resolver");
+ }
+ if (socketError) {
+ throw new UnknownHostException();
}
}
final OutputStream out = socket.getOutputStream();