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* net: make cgo resolver work more accurately with network parameterEugene Kalinin2018-10-251-1/+1
| | | | | | | | | | | | | | | | | | | Unlike the go resolver, the existing cgo resolver exchanges both DNS A and AAAA RR queries unconditionally and causes unreasonable connection setup latencies to applications using the cgo resolver. This change adds new argument (`network`) in all functions through the series of calls: from Resolver.internetAddrList to cgoLookupIPCNAME. Benefit: no redundant DNS calls if certain IP version is used IPv4/IPv6 (no `AAAA` DNS requests if used tcp4, udp4, ip4 network. And vice versa: no `A` DNS requests if used tcp6, udp6, ip6 network) Fixes #25947 Change-Id: I39edbd726d82d6133fdada4d06cd90d401e7e669 Reviewed-on: https://go-review.googlesource.com/c/120215 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
* net: avoid race on test hooks with DNS goroutinesIan Lance Taylor2017-12-081-0/+1
| | | | | | | | | | | | | The DNS code can start goroutines and not wait for them to complete. This does no harm, but in tests this can cause a race condition with the test hooks that are installed and unintalled around the tests. Add a WaitGroup that tests of DNS can use to avoid the race. Fixes #21090 Change-Id: I6c1443a9c2378e8b89d0ab1d6390c0e3e726b0ce Reviewed-on: https://go-review.googlesource.com/82795 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
* net: add Resolver.StrictErrorsPaul Marks2017-03-091-1/+1
| | | | | | | | | | | | | | | | | When LookupIP is performing multiple subqueries, this option causes a timeout/servfail affecting a single query to abort the whole operation, instead of returning a partial (IPv4/IPv6-only) result. Similarly, operations that walk the DNS search list will also abort when encountering one of these errors. Fixes #17448 Change-Id: Ice22e4aceb555c5a80d19bd1fde8b8fe87ac9517 Reviewed-on: https://go-review.googlesource.com/32572 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
* net: use contexts for cgo-based DNS resolutionScott Bell2016-05-101-2/+3
| | | | | | | | | | | | | | Although calls to getaddrinfo can't be portably interrupted, we still benefit from more granular resource management by pushing the context downwards. Fixes #15321 Change-Id: I5506195fc6493080410e3d46aaa3fe02018a24fe Reviewed-on: https://go-review.googlesource.com/22961 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
* net: context plumbing, add Dialer.DialContextBrad Fitzpatrick2016-04-151-2/+5
| | | | | | | | | | | | For #12580 (http.Transport tracing/analytics) Updates #13021 Change-Id: I126e494a7bd872e42c388ecb58499ecbf0f014cc Reviewed-on: https://go-review.googlesource.com/22101 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Mikio Hara <mikioh.mikioh@gmail.com>
* net: simplify error messages in testsMikio Hara2015-05-061-2/+2
| | | | | | | | | | | | | This change simplifies unnecessarily redundant error messages in tests. There's no need to worry any more because package APIs now return consistent, self-descriptive error values. Alos renames ambiguous test functions and makes use of test tables. Change-Id: I7b61027607c4ae2a3cf605d08d58cf449fa27eb2 Reviewed-on: https://go-review.googlesource.com/9662 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
* build: move package sources from src/pkg to srcRuss Cox2014-09-081-0/+24
Preparation was in CL 134570043. This CL contains only the effect of 'hg mv src/pkg/* src'. For more about the move, see golang.org/s/go14nopkg.
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