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Code Issues Releases Wiki Activity

update issue 2744

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try all addresses of a host.
(Fix is required for proper operation in IPv4-only/IPv6-only networks
 for IPv4/IPv6 dual-stack mail-hosts)
This commit is contained in:
Marcus Wolschon 2011-01-24 15:09:36 +00:00
parent 034f83e522
commit ba24fdc742
1 changed files with 32 additions and 19 deletions
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15
src/com/fsck/k9/mail/transport/SmtpTransport.java
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@ -30,6 +30,7 @@ import org.apache.commons.codec.binary.Hex;
import java.util.ArrayList; import java.util.ArrayList;
import java.util.Arrays; import java.util.Arrays;
import java.util.HashMap; import java.util.HashMap;
import java.util.Iterator;
import java.util.List; import java.util.List;
public class SmtpTransport extends Transport public class SmtpTransport extends Transport
@ -152,7 +153,10 @@ public class SmtpTransport extends Transport
{ {
try try
{ {
SocketAddress socketAddress = new InetSocketAddress(mHost, mPort); InetAddress[] addresses = InetAddress.getAllByName(mHost);
for (int i = 0; i < addresses.length; i++) {
try {
SocketAddress socketAddress = new InetSocketAddress(addresses[i], mPort);
if (mConnectionSecurity == CONNECTION_SECURITY_SSL_REQUIRED || if (mConnectionSecurity == CONNECTION_SECURITY_SSL_REQUIRED ||
mConnectionSecurity == CONNECTION_SECURITY_SSL_OPTIONAL) mConnectionSecurity == CONNECTION_SECURITY_SSL_OPTIONAL)
{ {
@ -171,6 +175,15 @@ public class SmtpTransport extends Transport
mSocket = new Socket(); mSocket = new Socket();
mSocket.connect(socketAddress, SOCKET_CONNECT_TIMEOUT); mSocket.connect(socketAddress, SOCKET_CONNECT_TIMEOUT);
} }
} catch (ConnectException e) {
if (i < (addresses.length - 1)) {
// there are still other addresses for that host to try
continue;
}
throw new MessagingException("Cannot connect to host", e);
}
break; // connection success
}
// RFC 1047 // RFC 1047
mSocket.setSoTimeout(SOCKET_READ_TIMEOUT); mSocket.setSoTimeout(SOCKET_READ_TIMEOUT);