A request whose body has no length of its own — Transfer-Encoding: chunked, or
HTTP/2 and HTTP/3 requests sent without the header — cannot be forwarded over
FastCGI until it has been buffered in full, because CGI/1.1 requires
CONTENT_LENGTH and php-fpm hangs when it is absent or wrong and the body is not
empty. When request_buffers is too small to hold the whole body, the length
stays unknown and the request is refused with 411.
The refusal said none of that. RoundTrip passes r.ContentLength to Post, which
is -1 for such a request, so the operator got a bare "411 Length Required" with
either no error at all or strconv's "invalid syntax" on a value they never
wrote. On #7386 that sent two people looking for the fault in their backend.
The 411 now carries the reason and the remedy, and the unknown-length case is
told apart from a genuinely malformed value. ParseUint becomes ParseInt plus an
explicit negative check, which is strictly tighter: values above MaxInt64 used
to be accepted and are unreachable anyway, since CONTENT_LENGTH is always
FormatInt of an int64 by the time Do sees it.
No status code changes. Every request that was refused before is still refused;
raising request_buffers is still what makes a large chunked body work.
Tests: the reachable path through Post, the unusable CONTENT_LENGTH values Do
itself guards against, an integration test driving a chunked body through a
fastcgi reverse_proxy over a unix socket at each side of the buffer boundary
(including request_buffers -1, which succeeds at any size and is the remedy),
and a boundary test recording that a body exactly the size of the buffer counts
as partial.
That last one is deliberately not changed here. Telling "exactly the limit"
apart from "more to come" costs a read that a paused stream may never answer,
and bufferedBody also backs response_buffers: measured against a body that
delivers exactly the limit and stops, the current code hands the buffered
prefix on immediately, while peeking one byte first delivers nothing at all.
Co-authored-by: Aditya <205600203+Rohilalala@users.noreply.github.com>
Co-authored-by: Zen Dodd <mail@steadytao.com>
* break up code and use lazy reading and pool bufio.Writer
* close underlying connection when operation failed
* allocate bufWriter and streamWriter only once
* refactor record writing
* rebase from master
* handle err
* Fix type assertion
Also reduce some duplication
* Refactor client and clientCloser for logging
Should reduce allocations
* Minor cosmetic adjustments; apply Apache license
* Appease the linter
Co-authored-by: Matthew Holt <mholt@users.noreply.github.com>
* ci: Use golangci's github action for linting
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix most of the staticcheck lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix the prealloc lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix the misspell lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix the varcheck lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix the errcheck lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix the bodyclose lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix the deadcode lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix the unused lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix the gosec lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix the gosimple lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix the ineffassign lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix the staticcheck lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Revert the misspell change, use a neutral English
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Remove broken golangci-lint CI job
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Re-add errantly-removed weakrand initialization
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* don't break the loop and return
* Removing extra handling for null rootKey
* unignore RegisterModule/RegisterAdapter
Co-authored-by: Mohammed Al Sahaf <msaa1990@gmail.com>
* single-line log message
Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
* Fix lint after a1808b0dbf209c615e438a496d257ce5e3acdce2 was merged
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Revert ticker change, ignore it instead
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Ignore some of the write errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Remove blank line
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Use lifetime
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* close immediately
Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
* Preallocate configVals
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Update modules/caddytls/distributedstek/distributedstek.go
Co-authored-by: Mohammed Al Sahaf <msaa1990@gmail.com>
Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
