Smack currently does unnecessary escaping of XML text, where it
escapes e.g. '"' to '"'. This bloats the stanza size, especially
if JSON payloads are involved.
Fixes SMACK-892 (although there are probably still places where
XmlStringBuilder.escape() is used when XmlStringBuild.text() could
have been used).
This means that users get now exceptions with helpful error messages
instead of the dreaded ClassCastException, like
java.lang.ClassCastException: org.jivesoftware.smack.packet.StandardExtensionElement cannot be cast to org.jivesoftware.smackx.mam.element.MamElements$MamResultExtension
at
when StanzaView.getExtension(Class) is used to retrieve the extension.
This PR aims to provide parseXrdLinkReferencesFor() method the ability
to parse forward to the first START_ELEMENT tag.The HttpLookupMethodTest
tests the HttpLookupMethod class by parsing String. This makes use of
PacketParserUtils.getParserFor(String), which already does forward
winding to reach START_ELEMENT. However when fetching endpoints from a
remote host meta data, PacketParserUtils.getParserFor(InputStream) is
used which doesn't do winding in any form. And thus, even though
HttpLookupMethodTest tests pass, this implementation would crash while
parsing remote host-meta.
We previously only set 'connected' after connectInternal()
returned. This could lead to notifyConnectionError() ignoring stream
error exceptions, e.g. when establishing TLS which happens also in
connectInternal(), because 'connected' was still 'false'.
2020-08-06 13:08:06.265 19830-20423/org.atalk.android D/SMACK: SENT (0):
<stream:stream xmlns='jabber:client' to='atalk.sytes.net' xmlns:stream='http://etherx.jabber.org/streams' version='1.0' xml:lang='en'>
2020-08-06 13:08:06.333 19830-20424/org.atalk.android D/SMACK: RECV (0): ?xml version='1.0'?>
<stream:stream id='16420577292739412012' version='1.0' xml:lang='en' xmlns:stream='http://etherx.jabber.org/streams' from='atalk.sytes.net' xmlns='jabber:client'>
<stream:error>
<policy-violation xmlns='urn:ietf:params:xml:ns:xmpp-streams'/>
<text xml:lang='en' xmlns='urn:ietf:params:xml:ns:xmpp-streams'>
Too many (20) failed authentications from this IP address (::ffff:42.60.7.13). The address will be unblocked at 05:15:34 06.08.2020 UTC
</text>
</stream:error>
</stream:stream>
2020-08-06 13:08:06.346 19830-20424/org.atalk.android I/aTalk: [241896] org.jivesoftware.smack.AbstractXMPPConnection.notifyConnectionError() Connection was already disconnected when attempting to handle org.jivesoftware.smack.XMPPException$StreamErrorException: policy-violation You can read more about the meaning of this stream error at http://xmpp.org/rfcs/rfc6120.html#streams-error-conditions
<stream:error><policy-violation xmlns='urn:ietf:params:xml:ns:xmpp-streams'/><text xml:lang='en'>Too many (20) failed authentications from this IP address (::ffff:42.60.7.13). The address will be unblocked at 05:15:34 06.08.2020 UTC</text></stream:error>
org.jivesoftware.smack.XMPPException$StreamErrorException: policy-violation You can read more about the meaning of this stream error at http://xmpp.org/rfcs/rfc6120.html#streams-error-conditions
<stream:error><policy-violation xmlns='urn:ietf:params:xml:ns:xmpp-streams'/><text xml:lang='en'>Too many (20) failed authentications from this IP address (::ffff:42.60.7.13). The address will be unblocked at 05:15:34 06.08.2020 UTC</text></stream:error>
at org.jivesoftware.smack.tcp.XMPPTCPConnection$PacketReader.parsePackets(XMPPTCPConnection.java:966)
at org.jivesoftware.smack.tcp.XMPPTCPConnection$PacketReader.access$700(XMPPTCPConnection.java:898)
at org.jivesoftware.smack.tcp.XMPPTCPConnection$PacketReader$1.run(XMPPTCPConnection.java:921)
at java.lang.Thread.run(Thread.java:919)
Which eventually leads to a NoResponseException
org.jivesoftware.smack.SmackException$NoResponseException: No response
received within reply timeout. Timeout was 30000ms (~30s). While
waiting for establishing TLS
[XMPPTCPConnection[not-authenticated] (4)]
We now set 'connected' to 'true' as soon as the transport (e.g. TCP,
BOSH, …) is connected. While this is in other ways also sensible, it
also allows notifyConnectionError() to handle exceptions in the early
connection stage.
Thanks to Eng Chong Meng for reporting this.
To make it clear that this will either return if the condition is
true *or* if a connection exception happened.
Also introduce waitFor(), which is deliberately not named
waitForCondition() because it carries a different semantic.
Synchronize notifyConnectionError() so that only one exception is
handled and remove the ASYNC_BUT_ORDERED usage here. The
ASYNC_BUT_ORDERED was added with 7d2c3ac9f ("Do not call synchronized
methods in reader/writer thread"), but is no longer necessary, since
the Semaphores where replaced with conditions in the previous commit.
This continues the design started with e98d42790 ("SmackReactor/NIO,
Java8/Android19, Pretty print XML, FSM connections"), where the
exceptions that caused an operation to fail, are not recorded within
SynchronizationPoint but within the connection instance itself.
Since d65f2c932 ("Bump Error Prone version to 2.3.4 and fix new bug
patterns") the channel selected callback is no longer a final field of
the connection instance, hence it may be come null even if the
connection instance is still strongly referenced. Also the
ConnectionAttemptState class uses simply a lambda as callback, which
is also not strongly referenced otherwise.
The "channel selected" callback was wrapped in weak reference, so that
connection instances could get gc'ed if they are still connected but
the user lost all references to them. In this case, the weak reference
to the connection instance would become 'null' and
selectionKey.cancel() would be called.
This change means that a socket and its selection key of a "leaked"
connected connection instance continues to be part of the reactor. But
this may not be that bad: first, users are expected to manager their
connection instances, and disconnect them before they are
discarded. And secondly, at some point the connection likely will get
disconnected, and in this case, the socket and its selection key will
be removed from the reactor.
This moves the logic in AbstractXMPPConnection.getSmackTlsContext()
into the ConnectionConfiguration constructor.
Also introduce SslContextFactory and use it in
ConnectionConfiguration.
The field XMPPInputOutputStream.flushMethod was not initialized, which
could cause an NPE in the "switch (flushMethod)" found in
Java7ZlibInputOutputStream.getOutputStream().
