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5 years agoMerge pull request #22 from willardf/Add-insert-message-to-message-reader
Forest [Tue, 15 Jun 2021 23:50:47 +0000 (16:50 -0700)]
Merge pull request #22 from willardf/Add-insert-message-to-message-reader

Added InsertMessage function to MessageReader

5 years agoAdded test case that continues reading without resetting, also has multiple inserts...
Jess Cloutier [Fri, 11 Jun 2021 17:00:32 +0000 (13:00 -0400)]
Added test case that continues reading without resetting, also has multiple inserts at different levels

5 years agoAdded unit tests for `InsertMessage()` and fixed some issues brought to light by...
Jess Cloutier [Wed, 9 Jun 2021 18:48:32 +0000 (14:48 -0400)]
Added unit tests for `InsertMessage()` and fixed some issues brought to light by the tests

5 years agoMerge pull request #21 from willardf/fix-bounds-checks
Forest [Tue, 8 Jun 2021 21:47:31 +0000 (14:47 -0700)]
Merge pull request #21 from willardf/fix-bounds-checks

Fix some bounds checking while parsing ClientHellos

5 years agoAdd test for one of the bounds checks fixed
Forest [Tue, 8 Jun 2021 01:42:29 +0000 (18:42 -0700)]
Add test for one of the bounds checks fixed

5 years agoFix some bounds checking while parsing ClientHellos and improve or disable some flaky...
Forest [Tue, 8 Jun 2021 00:05:03 +0000 (17:05 -0700)]
Fix some bounds checking while parsing ClientHellos and improve or disable some flaky tests

5 years agoAdded InsertMessage function to MessageReader
Jess Cloutier [Mon, 7 Jun 2021 17:57:47 +0000 (13:57 -0400)]
Added InsertMessage function to MessageReader

5 years agoMerge pull request #20 from willardf/sha256_stream
Forest [Wed, 14 Apr 2021 04:36:43 +0000 (21:36 -0700)]
Merge pull request #20 from willardf/sha256_stream

Stream data blocks directly to SHA256

5 years agoStream data blocks directly to SHA256
Matthew Endsley [Wed, 14 Apr 2021 00:21:27 +0000 (17:21 -0700)]
Stream data blocks directly to SHA256

This removes the need to buffer all data in a MemoryStream to simply
hash it when required.

5 years agoAdd Sha256Stream
Matthew Endsley [Mon, 12 Apr 2021 20:08:20 +0000 (13:08 -0700)]
Add Sha256Stream

This commit simply moves the MemoryStream/SHA256 combination into a
dedicated class and adds unit tests for SHA256 from the original FIPS
publication [1]

[1] https://csrc.nist.gov/csrc/media/publications/fips/180/2/archive/2002-08-01/documents/fips180-2withchangenotice.pdf

5 years agoMerge pull request #18 from willardf/fix_resent_handshake_failure
Forest [Fri, 2 Apr 2021 17:54:22 +0000 (10:54 -0700)]
Merge pull request #18 from willardf/fix_resent_handshake_failure

Fix resent handshake failure

5 years agoDo not generate ClientRandom on ClientHello resend
Matthew Endsley [Fri, 2 Apr 2021 01:10:37 +0000 (18:10 -0700)]
Do not generate ClientRandom on ClientHello resend

This buffer should only be generated at the start of the session.
Re-generating it on resend of ClientHello will desynchronize the session
between the client and server, resulting in the server refusing the
client's connection due to a hash mismatch in the Finished handshake
message.

5 years agoAdd unit test illustrating a connection failure due to resent handshake records
Matthew Endsley [Fri, 2 Apr 2021 00:31:10 +0000 (17:31 -0700)]
Add unit test illustrating a connection failure due to resent handshake records

5 years agoAdd SocketCaputre to UnitTest project
Matthew Endsley [Fri, 2 Apr 2021 00:30:12 +0000 (17:30 -0700)]
Add SocketCaputre to UnitTest project

This allows a unit test to explicitly control packet flow. This is
useful for scenarios that require specific timing and interleaving of
packets.

5 years agoAdd a verbose mode to logging, place some of the noisiest DTLS logs in verbose
Forest [Thu, 1 Apr 2021 20:27:34 +0000 (13:27 -0700)]
Add a verbose mode to logging, place some of the noisiest DTLS logs in verbose

5 years agoMerge pull request #16 from willardf/verbose_bytespan_error
Forest [Wed, 31 Mar 2021 21:06:34 +0000 (14:06 -0700)]
Merge pull request #16 from willardf/verbose_bytespan_error

Add additional context for invalid ByteSpans

5 years agoMerge pull request #17 from willardf/drop_bad_gcm_records
Forest [Wed, 31 Mar 2021 20:22:47 +0000 (13:22 -0700)]
Merge pull request #17 from willardf/drop_bad_gcm_records

Drop bad gcm records

5 years agoAdd unit test to confirm malformed GCM record bug
Matthew Endsley [Wed, 31 Mar 2021 19:16:11 +0000 (12:16 -0700)]
Add unit test to confirm malformed GCM record bug

5 years agoDrop records that are too small to be decrypted
Matthew Endsley [Wed, 31 Mar 2021 19:02:49 +0000 (12:02 -0700)]
Drop records that are too small to be decrypted

5 years agoAdd additional context for invalid ByteSpans
Matthew Endsley [Wed, 31 Mar 2021 18:56:47 +0000 (11:56 -0700)]
Add additional context for invalid ByteSpans

5 years agoFix a very strange issue around the socket on message read callback potentially being...
Forest [Tue, 30 Mar 2021 07:21:53 +0000 (00:21 -0700)]
Fix a very strange issue around the socket on message read callback potentially being called twice

5 years agoFix a test that broke based on the incorrect assumption that a first message id could...
Forest [Mon, 22 Mar 2021 23:48:35 +0000 (16:48 -0700)]
Fix a test that broke based on the incorrect assumption that a first message id could be 1 instead of 0

5 years agoFix an off-by-one bug when receiving out of order messages that wrap the last receive...
Forest [Mon, 22 Mar 2021 23:32:52 +0000 (16:32 -0700)]
Fix an off-by-one bug when receiving out of order messages that wrap the last received id past ushort.MaxValue

5 years agoReimplement debug lag features for UnityClientConnection
Forest [Thu, 18 Mar 2021 01:44:56 +0000 (18:44 -0700)]
Reimplement debug lag features for UnityClientConnection

5 years agoMerge pull request #13 from willardf/dtls_cleanup_handshake_timeout
Forest [Wed, 17 Mar 2021 05:53:55 +0000 (22:53 -0700)]
Merge pull request #13 from willardf/dtls_cleanup_handshake_timeout

Remove DTLS peers that fail to negotiate a valid epoch

5 years agoMerge pull request #8 from Elsensee/fix-ack-unreceived-packets
Forest [Sat, 6 Mar 2021 02:55:52 +0000 (18:55 -0800)]
Merge pull request #8 from Elsensee/fix-ack-unreceived-packets

Don't ack unreceived packets

5 years agoRemove DTLS peers that fail to negotiate a valid epoch
Matthew Endsley [Sat, 6 Mar 2021 01:53:23 +0000 (17:53 -0800)]
Remove DTLS peers that fail to negotiate a valid epoch

5 years agoMerge pull request #11 from willardf/synchronous_disconnect
Forest [Fri, 5 Mar 2021 23:17:07 +0000 (15:17 -0800)]
Merge pull request #11 from willardf/synchronous_disconnect

Ensure Unity clients send a Disconnect packet when disposed

5 years agoAdd a synchronous WriteBytesToConnection to handle disconnect packets
Matthew Endsley [Fri, 5 Mar 2021 22:09:07 +0000 (14:09 -0800)]
Add a synchronous WriteBytesToConnection to handle disconnect packets

5 years agoEnsure Unity clients send a Disconnect packet when disposed
Matthew Endsley [Sun, 28 Feb 2021 23:48:25 +0000 (15:48 -0800)]
Ensure Unity clients send a Disconnect packet when disposed

5 years agoMerge pull request #10 from willardf/dtls
Matthew Endsley [Tue, 9 Feb 2021 18:36:57 +0000 (10:36 -0800)]
Merge pull request #10 from willardf/dtls

Add DTLS Support

5 years agoMerge branch 'dtls_listener_shutdown' into dtls_development
Matthew Endsley [Tue, 9 Feb 2021 18:34:37 +0000 (10:34 -0800)]
Merge branch 'dtls_listener_shutdown' into dtls_development

5 years agoFlush outgoing packets before shutting closing socket
Matthew Endsley [Thu, 4 Feb 2021 21:54:15 +0000 (13:54 -0800)]
Flush outgoing packets before shutting closing socket

This ensures we at least attempt to send out Disconnect packets to
connected clients when shutting down. Prior to this the send thread
would race the Dispose thread causing indeterminate behavior. Sometimes
disconnect packets would be sent out, sometimes they wouldn't.

5 years agoAdd prefix string to TestLogger
Matthew Endsley [Thu, 4 Feb 2021 21:52:00 +0000 (13:52 -0800)]
Add prefix string to TestLogger

5 years agoEncode each certificate size in Certficate message
Matthew Endsley [Wed, 3 Feb 2021 22:49:12 +0000 (14:49 -0800)]
Encode each certificate size in Certficate message

5 years agoInclude hash+signature algorithms in ServerKeyExchange
Matthew Endsley [Wed, 3 Feb 2021 22:14:14 +0000 (14:14 -0800)]
Include hash+signature algorithms in ServerKeyExchange

5 years agoUpdate ClientHello to encode extensions size
Matthew Endsley [Wed, 3 Feb 2021 21:44:02 +0000 (13:44 -0800)]
Update ClientHello to encode extensions size

5 years agoMerge branch 'dtls_rotate_hmac' into dtls_development
Matthew Endsley [Wed, 3 Feb 2021 21:41:20 +0000 (13:41 -0800)]
Merge branch 'dtls_rotate_hmac' into dtls_development

5 years agoPeriodically rotate DTLS HMAC keys
Matthew Endsley [Wed, 3 Feb 2021 21:20:52 +0000 (13:20 -0800)]
Periodically rotate DTLS HMAC keys

5 years agoChangeChiperSpec records should have a single byte
Matthew Endsley [Wed, 3 Feb 2021 20:34:20 +0000 (12:34 -0800)]
ChangeChiperSpec records should have a single byte

5 years agoDo not compute HMAC for zero-length cookies
Matthew Endsley [Wed, 3 Feb 2021 21:23:33 +0000 (13:23 -0800)]
Do not compute HMAC for zero-length cookies

This is a common case since all clients send a non-signed ClientHello
message to initiate a new session. There is no need to perform the
hash+hmac for signatures that will always fail verification due to a
mismatched size.

5 years agoAcquire lock when resending DTLS packets
Matthew Endsley [Wed, 3 Feb 2021 11:38:34 +0000 (03:38 -0800)]
Acquire lock when resending DTLS packets

5 years agoMerge branch 'dtls_all_tests' into dtls
Matthew Endsley [Wed, 3 Feb 2021 11:24:54 +0000 (03:24 -0800)]
Merge branch 'dtls_all_tests' into dtls

5 years agoUse TestLogger for ThreadLimitedUdp tests
Matthew Endsley [Wed, 3 Feb 2021 11:23:49 +0000 (03:23 -0800)]
Use TestLogger for ThreadLimitedUdp tests

5 years agoModify ConnectLikeAJerk to cap valid connections at 1
Matthew Endsley [Wed, 3 Feb 2021 11:18:56 +0000 (03:18 -0800)]
Modify ConnectLikeAJerk to cap valid connections at 1

DTLS listeners will reject all raw traffic spam

5 years agoLeverage existing tests for DTLS listener
Matthew Endsley [Wed, 3 Feb 2021 11:10:41 +0000 (03:10 -0800)]
Leverage existing tests for DTLS listener

5 years agoDelegate listener and connection creation to subclass
Matthew Endsley [Wed, 3 Feb 2021 11:03:38 +0000 (03:03 -0800)]
Delegate listener and connection creation to subclass

5 years agoMove test bodies to base class
Matthew Endsley [Wed, 3 Feb 2021 11:01:42 +0000 (03:01 -0800)]
Move test bodies to base class

5 years agoMerge branch 'fix_ipv6' into dtls
Matthew Endsley [Wed, 3 Feb 2021 10:57:41 +0000 (02:57 -0800)]
Merge branch 'fix_ipv6' into dtls

5 years agoModify ConnectionId to key on both an endpoint and serial
Matthew Endsley [Wed, 3 Feb 2021 10:02:12 +0000 (02:02 -0800)]
Modify ConnectionId to key on both an endpoint and serial

5 years agoRemove NetworkConnection.RemoteEndPoint
Matthew Endsley [Wed, 3 Feb 2021 10:17:22 +0000 (02:17 -0800)]
Remove NetworkConnection.RemoteEndPoint

This field was originally created to provide a non-generic alternative
to the Connection class' EndPoint field. However, we've replaced the
generic ConnectionEndPoint with IPEndPoint in the Connection class.

Since the bas class has a less-generic alias, it is now safe to remove
RemoteEndPoint from NetworkConnection in favor of always using
Connection.EndPoint

5 years agoUse IPEndPoint internally in ThreadLimitedUdpConnectionListener
Matthew Endsley [Wed, 3 Feb 2021 10:11:28 +0000 (02:11 -0800)]
Use IPEndPoint internally in ThreadLimitedUdpConnectionListener

5 years agoUpdate error message to reflect new function source
Matthew Endsley [Wed, 3 Feb 2021 09:18:14 +0000 (01:18 -0800)]
Update error message to reflect new function source

5 years agoUse ConnectionId as key to connection map
Matthew Endsley [Wed, 3 Feb 2021 09:53:23 +0000 (01:53 -0800)]
Use ConnectionId as key to connection map

5 years agoUse consuming enumerator for queue processing
Matthew Endsley [Wed, 3 Feb 2021 09:15:10 +0000 (01:15 -0800)]
Use consuming enumerator for queue processing

This changes avoids us needing to write the proper error-checking code
to see if a queue has been completed vs some unrelated failure.

5 years agoInitialize the keep-alive timer before sending packets
Matthew Endsley [Wed, 3 Feb 2021 09:14:36 +0000 (01:14 -0800)]
Initialize the keep-alive timer before sending packets

5 years agoEnsure disconnect message is encrypted with DTLS
Matthew Endsley [Wed, 3 Feb 2021 09:14:05 +0000 (01:14 -0800)]
Ensure disconnect message is encrypted with DTLS

5 years agoAttempt to resend reliable packets during connection loop
Matthew Endsley [Wed, 3 Feb 2021 08:22:14 +0000 (00:22 -0800)]
Attempt to resend reliable packets during connection loop

5 years agoFix outgoing sequence numbers from DTLS connection listener
Matthew Endsley [Wed, 3 Feb 2021 22:27:33 +0000 (14:27 -0800)]
Fix outgoing sequence numbers from DTLS connection listener

5 years agoAdd DTLS connection tests
Matthew Endsley [Tue, 2 Feb 2021 14:17:23 +0000 (06:17 -0800)]
Add DTLS connection tests

5 years agoOnly join threads if we were active
Matthew Endsley [Tue, 2 Feb 2021 15:07:52 +0000 (07:07 -0800)]
Only join threads if we were active

5 years agoDo not clear spans of zero length
Matthew Endsley [Tue, 2 Feb 2021 15:06:35 +0000 (07:06 -0800)]
Do not clear spans of zero length

5 years agoMerge branch 'dtls_client' into dtls
Matthew Endsley [Tue, 2 Feb 2021 14:17:05 +0000 (06:17 -0800)]
Merge branch 'dtls_client' into dtls

5 years agoImplement client-side DTLS handshake
Matthew Endsley [Mon, 1 Feb 2021 23:35:28 +0000 (15:35 -0800)]
Implement client-side DTLS handshake

5 years agoAdd stub DTLS client connection
Matthew Endsley [Mon, 1 Feb 2021 21:53:52 +0000 (13:53 -0800)]
Add stub DTLS client connection

5 years agoMerge branch 'dtls_listener' into dtls
Matthew Endsley [Sun, 24 Jan 2021 18:06:49 +0000 (10:06 -0800)]
Merge branch 'dtls_listener' into dtls

5 years agoImplement server-side DTLS handshake
Matthew Endsley [Tue, 12 Jan 2021 15:10:12 +0000 (07:10 -0800)]
Implement server-side DTLS handshake

5 years agoAdd stub DTLS listener
Matthew Endsley [Thu, 17 Dec 2020 18:25:22 +0000 (10:25 -0800)]
Add stub DTLS listener

5 years agoAllow subclasses to mark a connection as stale
Matthew Endsley [Sun, 24 Jan 2021 17:24:04 +0000 (09:24 -0800)]
Allow subclasses to mark a connection as stale

These connections will be disconnected at the next call to DisconnectOldConnections

5 years agoUse abstract connection identifier
Matthew Endsley [Sun, 24 Jan 2021 17:30:35 +0000 (09:30 -0800)]
Use abstract connection identifier

This change lays the groundwork for the
ThreadLimitedUdpConnectionListener to distinguish different logical
sessions from the same remote address.

5 years agoAdd null record protection implementation
Matthew Endsley [Fri, 22 Jan 2021 18:39:08 +0000 (10:39 -0800)]
Add null record protection implementation

5 years agoMerge branch 'dtls_listener_update' into dtls
Matthew Endsley [Wed, 13 Jan 2021 18:32:09 +0000 (10:32 -0800)]
Merge branch 'dtls_listener_update' into dtls

5 years agoAllow TL connection listener to override incoming message processing
Matthew Endsley [Thu, 17 Dec 2020 18:00:50 +0000 (10:00 -0800)]
Allow TL connection listener to override incoming message processing

5 years agoMerge branch 'dtls_record_protection' into dtls
Matthew Endsley [Wed, 13 Jan 2021 12:25:01 +0000 (04:25 -0800)]
Merge branch 'dtls_record_protection' into dtls

5 years agoUpdate SendMessageInfo to hold byte span
Matthew Endsley [Sat, 19 Dec 2020 01:19:38 +0000 (17:19 -0800)]
Update SendMessageInfo to hold byte span

5 years agoAdd AesGcm record protection
Matthew Endsley [Wed, 13 Jan 2021 07:58:16 +0000 (23:58 -0800)]
Add AesGcm record protection

5 years agoAllow derived listener classes access to the logger
Matthew Endsley [Tue, 12 Jan 2021 15:14:53 +0000 (07:14 -0800)]
Allow derived listener classes access to the logger

5 years agoMerge branch 'dtls_record' into dtls
Matthew Endsley [Wed, 13 Jan 2021 09:35:12 +0000 (01:35 -0800)]
Merge branch 'dtls_record' into dtls

5 years agoAdd interface for record protection
Matthew Endsley [Wed, 13 Jan 2021 18:37:06 +0000 (10:37 -0800)]
Add interface for record protection

5 years agoMerge branch 'dtls_psuedo_random_function' into dtls
Matthew Endsley [Wed, 13 Jan 2021 08:56:28 +0000 (00:56 -0800)]
Merge branch 'dtls_psuedo_random_function' into dtls

5 years agoAdd record wire format conversions
Matthew Endsley [Wed, 13 Jan 2021 09:30:55 +0000 (01:30 -0800)]
Add record wire format conversions

5 years agoAdd common PRF labels as constants
Matthew Endsley [Wed, 13 Jan 2021 08:41:11 +0000 (00:41 -0800)]
Add common PRF labels as constants

5 years agoAdd ExpandSecret variant that takes label as a byte span
Matthew Endsley [Wed, 13 Jan 2021 08:39:21 +0000 (00:39 -0800)]
Add ExpandSecret variant that takes label as a byte span

5 years agoMerge branch 'key_exchange' into dtls
Matthew Endsley [Sat, 19 Dec 2020 06:33:57 +0000 (22:33 -0800)]
Merge branch 'key_exchange' into dtls

5 years agoAdd the psuedoranomm function P_SHA256
Matthew Endsley [Wed, 13 Jan 2021 08:18:45 +0000 (00:18 -0800)]
Add the psuedoranomm function P_SHA256

5 years agoMerge branch 'crypto_primitives' into dtls_new
Matthew Endsley [Sat, 23 Jan 2021 23:55:52 +0000 (15:55 -0800)]
Merge branch 'crypto_primitives' into dtls_new

5 years agoAdd x25519 version of ECDHE_RSA_256 cipher suite
Matthew Endsley [Sat, 19 Dec 2020 02:32:30 +0000 (18:32 -0800)]
Add x25519 version of ECDHE_RSA_256 cipher suite

This the portion of the cipher suite used during connection negotiation.

5 years agoAdd initial cipher suite interfaces
Matthew Endsley [Sat, 19 Dec 2020 02:21:34 +0000 (18:21 -0800)]
Add initial cipher suite interfaces

5 years agoAdd AES_GCM primitive
Matthew Endsley [Sat, 19 Dec 2020 02:10:32 +0000 (18:10 -0800)]
Add AES_GCM primitive

5 years agoAdd x25519 primitive
Matthew Endsley [Sat, 19 Dec 2020 01:59:52 +0000 (17:59 -0800)]
Add x25519 primitive

5 years agoAdd a few constant-time utilities
Matthew Endsley [Sat, 19 Dec 2020 02:02:49 +0000 (18:02 -0800)]
Add a few constant-time utilities

5 years agoAdd ByteSpan utility
Matthew Endsley [Thu, 17 Dec 2020 23:55:07 +0000 (15:55 -0800)]
Add ByteSpan utility

5 years agoDon't ack unreceived packets
Oliver Schramm [Sat, 9 Jan 2021 18:55:14 +0000 (19:55 +0100)]
Don't ack unreceived packets

5 years agoMerge branch 'cleanup_tests' into fewerThreads2
Matthew Endsley [Wed, 16 Dec 2020 22:45:08 +0000 (14:45 -0800)]
Merge branch 'cleanup_tests' into fewerThreads2

5 years agoInitialize keepalive timer in constructor
Matthew Endsley [Wed, 16 Dec 2020 21:30:45 +0000 (13:30 -0800)]
Initialize keepalive timer in constructor

5 years agoFix disposal issues in ThreadLimitedUdpConnectionListener
Matthew Endsley [Wed, 16 Dec 2020 21:30:24 +0000 (13:30 -0800)]
Fix disposal issues in ThreadLimitedUdpConnectionListener

5 years agoAdd the ability to start a MessageWriter in the middle of a MessageReader
Forest [Tue, 15 Dec 2020 01:03:54 +0000 (17:03 -0800)]
Add the ability to start a MessageWriter in the middle of a MessageReader

5 years agoA bit of testing and pushing abstractions around. Readers and Writers now clear their...
Forest [Thu, 5 Nov 2020 07:00:13 +0000 (23:00 -0800)]
A bit of testing and pushing abstractions around. Readers and Writers now clear their buffer upon get.

5 years agoMerge branch 'rewritepkts' into fewerThreads2
Forest [Sat, 31 Oct 2020 23:00:40 +0000 (16:00 -0700)]
Merge branch 'rewritepkts' into fewerThreads2

5 years agoTest UnityUdpClientConnection a little
Forest [Sat, 31 Oct 2020 22:58:10 +0000 (15:58 -0700)]
Test UnityUdpClientConnection a little