Commit Graph

13 Commits

Author SHA1 Message Date
Stefan Eissing
b1005d127f
bufq: writing into a softlimit queue cannot be partial
- when unable to obtain a new chunk on a softlimit bufq,
  this is an allocation error and needs to be reported as
  such.
- writes into a soflimit bufq never must be partial success

Reported-by: Dan Fandrich
Fixes #13020
Closes #13023
2024-03-03 17:35:47 +01:00
Stefan Eissing
9369c30cd8
lib: Curl_read/Curl_write clarifications
- replace `Curl_read()`, `Curl_write()` and `Curl_nwrite()` to
  clarify when and at what level they operate
- send/recv of transfer related data is now done via
  `Curl_xfer_send()/Curl_xfer_recv()` which no longer has
  socket/socketindex as parameter. It decides on the transfer
  setup of `conn->sockfd` and `conn->writesockfd` on which
  connection filter chain to operate.
- send/recv on a specific connection filter chain is done via
  `Curl_conn_send()/Curl_conn_recv()` which get the socket index
  as parameter.
- rename `Curl_setup_transfer()` to `Curl_xfer_setup()` for
  naming consistency
- clarify that the special CURLE_AGAIN hangling to return
  `CURLE_OK` with length 0 only applies to `Curl_xfer_send()`
  and CURLE_AGAIN is returned by all other send() variants.
- fix a bug in websocket `curl_ws_recv()` that mixed up data
  when it arrived in more than a single chunk (to be made
  into a sperate PR, also)

Added as documented [in
CLIENT-READER.md](5b1f31dfba/docs/CLIENT-READERS.md).

- old `Curl_buffer_send()` completely replaced by new `Curl_req_send()`
- old `Curl_fillreadbuffer()` replaced with `Curl_client_read()`
- HTTP chunked uploads are now formatted in a client reader added when
  needed.
- FTP line-end conversions are done in a client reader added when
  needed.
- when sending requests headers, remaining buffer space is filled with
  body data for sending in "one go". This is independent of the request
  body size. Resolves #12938 as now small and large requests have the
  same code path.

Changes done to test cases:

- test513: now fails before sending request headers as this initial
  "client read" triggers the setup fault. Behaves now the same as in
  hyper build
- test547, test555, test1620: fix the length check in the lib code to
  only fail for reads *smaller* than expected. This was a bug in the
  test code that never triggered in the old implementation.

Closes #12969
2024-02-28 12:58:55 +01:00
Daniel Stenberg
5595e33617
bufq: remove Curl_bufq_skip_and_shift (unused)
Closes #11915
2023-09-23 10:50:10 +02:00
Stefan Eissing
65937f0d63
HTTP/2: upload handling fixes
- fixes #11242 where 100% CPU on uploads was reported
- fixes possible stalls on last part of a request body when
  that information could not be fully send on the connection
  due to an EAGAIN
- applies the same EGAIN handling to HTTP/2 proxying

Reported-by: Sergey Alirzaev
Fixed #11242
Closes #11342
2023-06-20 09:09:25 +02:00
Stefan Eissing
73022b52c1
bufq: make write/pass methods more robust
- related to #11242 where curl enters busy loop when
  sending http2 data to the server

Closes #11247
2023-06-05 20:11:41 +02:00
Daniel Stenberg
8e85764b7b
lib: remove unused functions, make single-use static
Closes #11174
2023-05-23 11:08:51 +02:00
Stefan Eissing
acd82c8bfd
tests/http: more tests with specific clients
- Makefile support for building test specific clients in tests/http/clients
- auto-make of clients when invoking pytest
- added test_09_02 for server PUSH_PROMISEs using clients/h2-serverpush
- added test_02_21 for lib based downloads and pausing/unpausing transfers

curl url parser:
- added internal method `curl_url_set_authority()` for setting the
  authority part of a url (used for PUSH_PROMISE)

http2:
- made logging of PUSH_PROMISE handling nicer

Placing python test requirements in requirements.txt files
- separate files to base test suite and http tests since use
  and module lists differ
- using the files in the gh workflows

websocket test cases, fixes for we and bufq
- bufq: account for spare chunks in space calculation
- bufq: reset chunks that are skipped empty
- ws: correctly encode frames with 126 bytes payload
- ws: update frame meta information on first call of collect
  callback that fills user buffer
- test client ws-data: some test/reporting improvements

Closes #11006
2023-04-26 23:24:46 +02:00
Stefan Eissing
fc2f1e547a
http2: support HTTP/2 to forward proxies, non-tunneling
- with `--proxy-http2` allow h2 ALPN negotiation to
  forward proxies
- applies to http: requests against a https: proxy only,
  as https: requests will auto-tunnel
- adding a HTTP/1 request parser in http1.c
- removed h2h3.c
- using new request parser in nghttp2 and all h3 backends
- adding test 2603 for request parser
- adding h2 proxy test cases to test_10_*

scorecard.py: request scoring accidentally always run curl
with '-v'. Removed that, expect double numbers.

labeller: added http1.* and h2-proxy sources to detection

Closes #10967
2023-04-17 17:27:49 +02:00
Daniel Stenberg
0ebf111b37
bufq: simplify since expression is always true
The check for 'len' is already done so it will remain true until
updated. Pointed out by PVS.

Ref: #10929
Closes #10958
2023-04-14 09:28:33 +02:00
Stefan Eissing
8f50e393ab
vtls and h2 improvements
- eliminate receive loop in vtls to fill buffer. This may
  lead to partial reads of data which is counter productive
- let http2 instead loop smarter to process pending network
  data without transfer switches

scorecard improvements
- do not start caddy when only httpd is requested
- allow curl -v to stderr file on --curl-verbose

Closes #10891
2023-04-06 09:41:54 +02:00
Stefan Eissing
544abeea83
http3: improvements across backends
- ngtcp2: using bufq for recv stream data
- internal stream_ctx instead of `struct HTTP` members
  for quiche, ngtcp2 and msh3
- no more QUIC related members in `struct HTTP`
- experimental use of recvmmsg(), disabled by default
  - testing on my old debian box shows no throughput improvements.
  - leaving it in, but disabled, for future revisit
- vquic: common UDP receive code for ngtcp2 and quiche
- vquic: common UDP send code for ngtcp2 and quiche
- added pytest skips for known msh3 failures
- fix unit2601 to survive torture testing
- quiche: using latest `master` from quiche and enabling large download
  tests, now that key change is supported
- fixing test_07_21 where retry handling of starting a stream
  was faulty
- msh3: use bufq for recv buffering headers and data
- msh3: replace fprintf debug logging with LOG_CF where possible
- msh3: force QUIC expire timers on recv/send to have more than
  1 request per second served

Closes #10772
2023-03-31 15:44:57 +02:00
Stefan Eissing
744dcf22fa
http2: flow control and buffer improvements
- use bufq for send/receive of network data
- usd bufq for send/receive of stream data
- use HTTP/2 flow control with no-auto updates to control the
  amount of data we are buffering for a stream
  HTTP/2 stream window set to 128K after local tests, defined
  code constant for now
- elminiating PAUSEing nghttp2 processing when receiving data
  since a stream can now take in all DATA nghttp2 forwards

Improved scorecard and adjuste http2 stream window sizes
- scorecard improved output formatting and options default
- scorecard now also benchmarks small requests / second

Closes #10771
2023-03-30 23:11:26 +02:00
Stefan Eissing
61f52a97e9
lib: add bufq and dynhds
Adding `bufq`:
- at init() time configured to hold up to `n` chunks of `m` bytes each.
- various methods for reading from and writing to it.
- `peek` support to get access to buffered data without copy
- `pass` support to allow buffer flushing on write if it becomes full
- use case: IO buffers for dynamic reads and writes that do not blow up
- distinct from `dynbuf` in that:
  - it maintains a read position
  - writes on a full bufq return CURLE_AGAIN instead of nuking itself
- Init options:
  - SOFT_LIMIT: allow writes into a full bufq
  - NO_SPARES: free empty chunks right away
- a `bufc_pool` that can keep a number of spare chunks to
  be shared between different `bufq` instances

Adding `dynhds`:
- a straightforward list of name+value pairs as used for HTTP headers
- headers can be appended dynamically
- headers can be removed again
- headers can be replaced
- headers can be looked up
- http/1.1 formatting into a `dynbuf`
- configured at init() with limits on header counts and total string
  sizes
- use case: pass a HTTP request or response around without being version
  specific
- express a HTTP request without a curl easy handle (used in h2 proxy
  tunnels)
- future extension possibilities:
  - conversions of `dynhds` to nghttp2/nghttp3 name+value arrays

Closes #10720
2023-03-30 09:08:05 +02:00