| Commit message (Collapse) | Author | Age |
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Now initial output packet is not padded anymore if followed by a handshake
packet. If the datagram is still not big enough to satisfy minimum size
requirements, handshake packet is padded.
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Buffers are used to hold frame data. They have a fixed size and are reused
after being freed.
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The patch replaces c->send() occurences with c->send_chain(), because the
latter accounts for the local address, which may be different if the wildcard
listener is used.
Previously, server sent response to client using address different from
one client connected to.
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Notably, this fixes an issue with Chrome that can emit a "certificate_unknown"
alert during the SSL handshake where c->ssl->no_wait_shutdown is not yet set.
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The filter is responsible for creating HTTP/3 response header and body.
The change removes differences to the default branch for
ngx_http_chunked_filter_module and ngx_http_header_filter_module.
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The ngx_quic_get_send_ctx() macro takes 'level' argument, not send context
index.
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Instead, appropriate format specifier for hexadecimal is used
in ngx_log_debug().
The STREAM frame "data" debug is moved into ngx_quic_log_frame(), similar
to all other frame fields debug.
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The field was introduced to ease parsing HTTP/3 requests.
The change reduces diff to the default branch.
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Header value returned from the HTTP parser is expected to be null-terminated or
have a spare byte after the value bytes. When an empty header value was passed
by client in a literal header representation, neither was true. This could
result in segfault. The fix is to assign a literal empty null-terminated
string in this case.
Thanks to Andrey Kolyshkin.
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Unfinalized chain could result in segfault. The problem was introduced in
ef83990f0e25.
Patch by Andrey Kolyshkin.
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Per the latest post draft-32 specification updates on the topic:
https://github.com/quicwg/base-drafts/pull/4391
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Both clearflags and badflags are removed. It makes a little sense now
to keep them as intermediate storage.
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They no longer differ.
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This gets rid of magic numbers from quic protection and allows to push down
header construction specifics further to quic transport.
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It doesn't make sense to expose the header type in a public function.
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The largely duplicate type-specific functions ngx_quic_parse_initial_header(),
ngx_quic_parse_handshake_header(), and a missing one for 0-RTT, were merged.
The new order of functions listed in ngx_event_quic_transport.c reflects this.
|_ ngx_quic_parse_long_header - version-invariant long header fields
\_ ngx_quic_supported_version - a helper to decide we can go further
\_ ngx_quic_parse_long_header_v1 - QUICv1-specific long header fields
0-RTT packets previously appeared as Handshake are now logged as appropriate:
*1 quic packet rx long flags:db version:ff00001d
*1 quic packet rx early len:870
Logging SCID/DCID is no longer duplicated as were seen with Initial packets.
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No functional changes.
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As with the previous change, it became feasible with feec2cc762f6
that removes ngx_quic_connection_t from ngx_connection_s.
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It became feasible to reduce after feec2cc762f6 that
removes ngx_quic_connection_t from ngx_connection_s.
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Removed a useless mask from the value being shifted, since it is 1-byte wide.
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If trailers were missing and a chain carrying the last_buf flag had no data
in it, then last HTTP/1 chunk was broken. The problem was introduced while
implementing HTTP/3 response body generation.
The change fixes the issue and reduces diff to the mainline nginx.
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Previously, if quic_stateless_reset_token_key was empty or unspecified,
initial stateless reset token was not generated. However subsequent tokens
were generated with empty key, which resulted in error with certain SSL
libraries, for example OpenSSL.
Now a random 32-byte stateless reset token key is generated if none is
specified in the configuration. As a result, stateless reset tokens are now
generated for all server ids.
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A similar directive is already available in HTTP.
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Previously new dcid was generated in the same memory that was allocated for
qc->dcid when creating the QUIC connection. However this memory was also
referenced by initial_source_connection_id and retry_source_connection_id
transport parameters. As a result these parameters changed their values after
retry which broke the protocol.
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Now QUIC connection is accessed via the c->udp field.
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Also, connection migration within a single worker is implemented.
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Particularly, c->curr_seqnum is renamed to c->client_seqnum and
ngx_quic_alloc_connection_id() is renamed to ngx_quic_alloc_client_id().
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Previously, a version based on NGX_QUIC_DRAFT_VERSION was always set.
Now it is taken from the negotiated QUIC version that may differ.
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Draft-29 and beyond are now treated as compatible versions.
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A negotiated version is decoupled from NGX_QUIC_VERSION and, if supported,
now stored in c->quic->version after packets processing. It is then used
to create long header packets. Otherwise, the list of supported versions
(which may be many now) is sent in the Version Negotiation packet.
All packets in the connection are expected to have the same version.
Incoming packets with mismatched version are now rejected.
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A number of unsigned variables has a special value, usually -1 or some maximum,
which produces huge numeric value in logs and makes them hard to read.
In order to distinguish such values in log, they are casted to the signed type
and printed as literal '-1'.
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The client address validation didn't complete with a valid token,
which was broken after packet processing refactoring in d0d3fc0697a0.
An invalid or expired token was treated as a connection error.
Now we proceed as outlined in draft-ietf-quic-transport-32,
section 8.1.3 "Address Validation for Future Connections" below,
which is unlike validating the client address using Retry packets.
When a server receives an Initial packet with an address validation
token, it MUST attempt to validate the token, unless it has already
completed address validation. If the token is invalid then the
server SHOULD proceed as if the client did not have a validated
address, including potentially sending a Retry.
The connection is now closed in this case on internal errors only.
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All key handling functionality is moved into ngx_quic_protection.c.
Public structures from ngx_quic_protection.h are now private and new
methods are available to manipulate keys.
A negotiated cipher is cached in QUIC connection from the set secret callback
to avoid calling SSL_get_current_cipher() on each encrypt/decrypt operation.
This also reduces the number of unwanted c->ssl->connection occurrences.
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No functional changes.
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No functional changes.
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When a packet is declared lost, its frames are handled differently according to
13.3. Retransmission of Information.
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Acknowledgments are regenerated using the most recent data available.
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Previously ACK ranges were logged as a gap/range sequence. Now these
values are expanded to packet number ranges for easier reading.
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Previously, tx ACK frames held ranges in an array of ngx_quic_ack_range_t,
while rx ACK frames held ranges in the serialized format. Now serialized format
is used for both types of frames.
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The patch resets ctx->frames queue, which may contain frames. It was possible
that congestion or amplification limits prevented all frames to be sent.
Retransmitted frames could be accounted twice as inflight: first time in
ngx_quic_congestion_lost() called from ngx_quic_resend_frames(), and later
from ngx_quic_discard_ctx().
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This allows to continue processing when the anti-amplification limit was hit.
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This accounts for the following change:
* Require expansion of datagrams to ensure that a path supports at
least 1200 bytes:
- During the handshake ack-eliciting Initial packets from the
server need to be expanded
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