Previously it depended on whether we were using the Go resolver or the Cgo resolver.
Fixes#12421.
Change-Id: Ib162e336f30f736d7244e29d96651c3be11fc3cd
Reviewed-on: https://go-review.googlesource.com/18383
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
As Andy Balholm noted in #11207:
"RFC2616 §4.2 says that a header's field-content can consist of *TEXT,
and RFC2616 §2.2 says that TEXT is <any OCTET except CTLs, but
including LWS>, so that would mean that bytes greater than 128 are
allowed."
This is a partial rollback of the strictness from
https://golang.org/cl/11207 (added in the Go 1.6 dev cycle, only
released in Go 1.6beta1)
Fixes#11207
Change-Id: I3a752a7941de100e4803ff16a5d626d5cfec4f03
Reviewed-on: https://go-review.googlesource.com/18374
Reviewed-by: Russ Cox <rsc@golang.org>
Reviewed-by: Andrew Gerrand <adg@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Document the three GODEBUG environment variables in the package doc.
Updates the bundled http2 to x/net git rev 415f1917
for https://golang.org/cl/18372.
Fixes#13611
Change-Id: I3116c5d7de70d3d15242d7198f3758b1fb7d94b9
Reviewed-on: https://go-review.googlesource.com/18373
Reviewed-by: Andrew Gerrand <adg@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
I thought there was still work to do in http2 for this, but I guess
not: the work for parsing them is in net/url (used by http2) and the
handling of OPTIONS * is already in net/http serverHandler, also used
by http2.
But keep the tests.
Change-Id: I566dd0a03cf13c9ea8e735c6bd32d2c521ed503b
Reviewed-on: https://go-review.googlesource.com/18368
Reviewed-by: Blake Mizerany <blake.mizerany@gmail.com>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Update bundled http2 to git rev d1ba260648 (https://golang.org/cl/18288).
Fixes the flaky TestTransportAndServerSharedBodyRace_h2.
Also adds some debugging to TestTransportAndServerSharedBodyRace_h2
which I hope won't ever be necessary again, but I know will be.
Fixes#13556
Change-Id: Ibcf2fc23ec0122dcac8891fdc3bd7f8acddd880e
Reviewed-on: https://go-review.googlesource.com/18289
Reviewed-by: Andrew Gerrand <adg@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
But also cache the previous parsed form and don't reread if the
size and modification time are both unchanged from before.
On systems with stable /etc/hosts this should result in more stat calls
but only a single parsing of /etc/hosts.
On systems with variable /etc/hosts files (like some Docker systems)
this should result in quicker adoption of changes.
Fixes#13340.
Change-Id: Iba93b204be73d6d903cd17c58038a4fcfd0952b9
Reviewed-on: https://go-review.googlesource.com/18258
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Add a couple more cases where we convert random network I/O errors
into errRequestCanceled if the request was forcefully aborted.
It failed ~1/1000 times without -race, or very easily with -race.
(due to -race randomizing some scheduling)
Fixes#11894
Change-Id: Ib1c123ce1eebdd88642da28a5948ca4f30581907
Reviewed-on: https://go-review.googlesource.com/18287
Reviewed-by: Russ Cox <rsc@golang.org>
This shouldn't need to exist in general, but in practice I want something
like this a few times per year.
Change-Id: I9c220e58be44b7726f75d776f714212c570cf8bb
Reviewed-on: https://go-review.googlesource.com/18286
Reviewed-by: Russ Cox <rsc@golang.org>
Adds a test that both http1 and http2's Transport send a default
User-Agent, with the same behavior.
Updates bundled http2 to golang.org/x/net git rev 1ade16a545 (for
https://go-review.googlesource.com/18285)
The http1 behavior changes slightly: if req.Header["User-Agent"] is
defined at all, even if it's nil or a zero-length slice, then the
User-Agent header is omitted. This is a slight behavior change for
http1, but is consistent with how http1 & http2 do optional headers
elsewhere (such as "Date", "Content-Type"). The old behavior (set it
explicitly to "", aka []string{""}) still works as before. And now
there are even tests.
Fixes#13685
Change-Id: I5786a6913b560de4a5f1f90e595fe320ff567adf
Reviewed-on: https://go-review.googlesource.com/18284
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This was supposed to be in CL 18205 but I submitted via the web
instead of from my computer, so it got lost.
May deflake some things.
Change-Id: I880fb74b5943b8a17f952a82639c60126701187a
Reviewed-on: https://go-review.googlesource.com/18259
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Mention that:
- connection pooling is enabled by default,
- the Transport is safe for concurrent use, and
- the Client type should be used for high-level stuff.
Change-Id: Idfd8cc852e733c44211e77cf0e22720b1fdca39b
Reviewed-on: https://go-review.googlesource.com/18273
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Update net/http's copy of http2 (sync as of x/net git rev 961116aee,
aka https://golang.org/cl/18266)
Also adds some CONNECT tests for #13717 (mostly a copy of http2's
version of test, but in the main repo it also tests that http1 behaves
the same)
Fixes#13668Fixes#13717
Change-Id: I7db93fe0b7c42bd17a43ef32953f2d20620dd3ea
Reviewed-on: https://go-review.googlesource.com/18269
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
In the beginning, there was no way to cancel an HTTP request.
We later added Transport.CancelRequest to cancel an in-flight HTTP
request by breaking its underlying TCP connection, but it was hard to
use correctly and didn't work in all cases. And its error messages
were terrible. Some of those issues were fixed over time, but the most
unfixable problem was that it didn't compose well. All RoundTripper
implementations had to choose to whether to implement CancelRequest
and both decisions had negative consequences.
In Go 1.5 we added Request.Cancel, which composed well, worked in all
phases, had nice error messages, etc. But we forgot to use it in the
implementation of Client.Timeout (a timeout which spans multiple
requests and reading request bodies).
In Go 1.6 (upcoming), we added HTTP/2 support, but now Client.Timeout
didn't work because the http2.Transport didn't have a CancelRequest
method.
Rather than add a CancelRequest method to http2, officially deprecate
it and update the only caller (Client, for Client.Cancel) to use
Request.Cancel instead.
The http2 Client timeout tests are enabled now.
For compatibility, we still use CancelRequest in Client if we don't
recognize the RoundTripper type. But documentation has been updated to
tell people that CancelRequest is deprecated.
Fixes#13540
Change-Id: I15546b90825bb8b54905e17563eca55ea2642075
Reviewed-on: https://go-review.googlesource.com/18260
Reviewed-by: Andrew Gerrand <adg@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
In debugging the flaky test in #13825, I discovered that my previous
change to tighten and simplify the communication protocol between
Transport.roundTrip and persistConn.readLoop in
https://golang.org/cl/17890 wasn't complete.
This change simplifies it further: the buffered-vs-unbuffered
complexity goes away, and we no longer need to re-try channel reads in
the select case. It was trying to prioritize channels in the case that
two were readable in the select. (it was only failing in the race builder
because the race builds randomize select scheduling)
The problem was that in the bodyless response case we had to return
the idle connection before replying to roundTrip. But putIdleConn
previously both added it to the free list (which we wanted), but also
closed the connection, which made the caller goroutine
(Transport.roundTrip) have two readable cases: pc.closech, and the
response. We guarded against similar conditions in the caller's select
for two readable channels, but such a fix wasn't possible here, and would
be overly complicated.
Instead, switch to unbuffered channels. The unbuffered channels were only
to prevent goroutine leaks, so address that differently: add a "callerGone"
channel closed by the caller on exit, and select on that during any unbuffered
sends.
As part of the fix, split putIdleConn into two halves: a part that
just returns to the freelist, and a part that also closes. Update the
four callers to the variants each wanted.
Incidentally, the connections were closing on return to the pool due
to MaxIdleConnsPerHost (somewhat related: #13801), but this bug
could've manifested for plenty of other reasons.
Fixes#13825
Change-Id: I6fa7136e2c52909d57a22ea4b74d0155fdf0e6fa
Reviewed-on: https://go-review.googlesource.com/18282
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Andrew Gerrand <adg@golang.org>
The CloseNotifier implementation and documentation was
substantially changed in https://golang.org/cl/17750 but it was a bit
too aggressive.
Issue #13666 highlighted that in addition to breaking external
projects, even the standard library (httputil.ReverseProxy) didn't
obey the new rules about not using CloseNotifier until the
Request.Body is fully consumed.
So, instead of fixing httputil.ReverseProxy, dial back the rules a
bit. It's now okay to call CloseNotify before consuming the request
body. The docs now say CloseNotifier may wait to fire before the
request body is fully consumed, but doesn't say that the behavior is
undefined anymore. Instead, we just wait until the request body is
consumed and start watching for EOF from the client then.
This CL also adds a test to ReverseProxy (using a POST request) that
would've caught this earlier.
Fixes#13666
Change-Id: Ib4e8c29c4bfbe7511f591cf9ffcda23a0f0b1269
Reviewed-on: https://go-review.googlesource.com/18144
Reviewed-by: Russ Cox <rsc@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
https://golang.org/cl/18087 added a bunch of t.Parallel calls, which
aren't compatible with the afterTest func. But in short mode, afterTest
is a no-op. To keep all.bash (short mode) fast, conditionally set
t.Parallel when in short mode, but keep it unset for compatibility with
afterFunc otherwise.
Fixes#13804
Change-Id: Ie841fbc2544e1ffbee43ba1afbe895774e290da0
Reviewed-on: https://go-review.googlesource.com/18143
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Takes 3% off my all.bash run time.
For #10571.
Change-Id: I8f00f523d6919e87182d35722a669b0b96b8218b
Reviewed-on: https://go-review.googlesource.com/18087
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This change replaces the existing log format separated by commas and
spaces with space-separated one.
Change-Id: I9a4b38669025430190c9a1a6b5c82b862866559d
Reviewed-on: https://go-review.googlesource.com/17999
Reviewed-by: Ian Lance Taylor <iant@golang.org>
In general the package net deals IPv4 addresses as IPv6 IPv4-mapped
addresses internally for the dual stack era, when we need to support
various techniques on IPv4/IPv6 translation.
This change makes windows implementation follow the same pattern which
BSD variants and Linux do.
Updates #13544.
Also fixes an unintentionally formatted line by accident by gofmt.
Change-Id: I4953796e751fd8050c73094468a0d7b0d33f5516
Reviewed-on: https://go-review.googlesource.com/17992
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Copy the same sentence from Transport.TLSNextProto.
Change-Id: Ib67bf054e891a68be8ba466a8c52968363374d16
Reviewed-on: https://go-review.googlesource.com/18031
Reviewed-by: Russ Cox <rsc@golang.org>
Update docs on ResponseWriter and Handler around concurrency.
Also add a test.
The Handler docs were old and used "object" a lot. It was also too
ServeMux-centric.
Fixes#13050
Updates #13659 (new issue found in http2 while writing the test)
Change-Id: I25f53d5fa54f1c9d579d3d0f191bf3d94b1a251b
Reviewed-on: https://go-review.googlesource.com/17982
Reviewed-by: Russ Cox <rsc@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Patch from Russ.
No bug identified, but I didn't search exhaustively. The new code is
easier to read.
Fixes#13621
Change-Id: Ifda936e4101116fa254ead950b5fe06adb14e977
Reviewed-on: https://go-review.googlesource.com/17981
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
This updates the bundled copy of x/net/http2 to git rev d2ecd08
for https://golang.org/cl/17912 (http2: send client trailers)
and enables the final Trailer test for http2.
Fixes#13557
Change-Id: Iaa15552b82bf7a2cb01b7787a2e1ec5ee680a9d3
Reviewed-on: https://go-review.googlesource.com/17935
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
Also include test for interface state (up or down).
Updates #13606
Change-Id: I03538d65525ddd9c2d0254761861c2df7fc5bd5a
Reviewed-on: https://go-review.googlesource.com/17850
Reviewed-by: Russ Cox <rsc@golang.org>
Reviewed-by: Mikio Hara <mikioh.mikioh@gmail.com>
Run-TryBot: Russ Cox <rsc@golang.org>
Document that ListenAndServe and ListenAndServeTLS also set TCP
keep-alives.
Fixes#12748
Change-Id: Iba2e8a58dd657eba326db49a6c872e2d972883a4
Reviewed-on: https://go-review.googlesource.com/17681
Reviewed-by: Russ Cox <rsc@golang.org>
With certain names and search domain configurations the
returned error would be one encountered while querying a
generated name instead of the original name. This caused
confusion when a manual check of the same name produced
different results.
Now prefer errors encountered for the original name.
Also makes the low-level DNS connection plumbing swappable
in tests enabling tighter control over responses without
relying on the network.
Fixes#12712
Updates #13295
Change-Id: I780d628a762006bb11899caf20b5f97b462a717f
Reviewed-on: https://go-review.googlesource.com/16953
Reviewed-by: Russ Cox <rsc@golang.org>
I updated this in the previous commit (https://golang.org/cl/17931)
but noticed a typo. and it still wasn't great.
The Go 1.5 text was too brief to know how to use it:
// Trailer maps trailer keys to values, in the same
// format as the header.
Change-Id: I33c49b6a4a7a3596735a4cc7865ad625809da900
Reviewed-on: https://go-review.googlesource.com/17932
Reviewed-by: Russ Cox <rsc@golang.org>
This CL updates the bundled copy of x/net/http2 to include
https://golang.org/cl/17930 and enables the previously-skipped tests
TestTrailersServerToClient_h2 and TestTrailersServerToClient_Flush_h2.
It also updates the docs on http.Response.Trailer to describe how to
use it. No change in rules. Just documenting the old unwritten rules.
(there were tests locking in the behavior, and misc docs and examples
scattered about, but not on http.Response.Trailer itself)
Updates #13557
Change-Id: I6261d439f6c0d17654a1a7928790e8ffed16df6c
Reviewed-on: https://go-review.googlesource.com/17931
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Blake Mizerany <blake.mizerany@gmail.com>
CL 17821 used syscall.CancelIoEx to cancel outstanding connect
call, but did not check for syscall.CancelIoEx return value.
Also I am worried about introducing race here. We should use
proper tools available for us instead. For example, we could
use fd.setWriteDeadline just like unix version does. Do that.
Change-Id: Idb9a03c8c249278ce3e2a4c49cc32445d4c7b065
Reviewed-on: https://go-review.googlesource.com/17920
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Alex Brainman <alex.brainman@gmail.com>
The old test was in client_test.go but was a mix of four things:
- clients writing trailers
- servers reading trailers
- servers writing trailers
- clients reading trailers
It definitely wasn't just about clients.
This moves it into clientserver_test.go and separates it into two
halves:
- servers writing trailers + clients reading trailers
- clients writing trailers + servers reading trailers
Which still isn't ideal, but is much better, and easier to read.
Updates #13557
Change-Id: I8c3e58a1f974c1b10bb11ef9b588cfa0f73ff5d9
Reviewed-on: https://go-review.googlesource.com/17895
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Blake Mizerany <blake.mizerany@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
The Transport had a delicate protocol between its readLoop goroutine
and the goroutine calling RoundTrip. The basic concern is that the
caller's RoundTrip goroutine wants to wait for either a
connection-level error (the conn dying) or the response. But sometimes
both happen: there's a valid response (without a body), but the conn
is also going away. Both goroutines' logic dealing with this had grown
large and complicated with hard-to-follow comments over the years.
Simplify and document. Pull some bits into functions and do all
bodyless stuff in one place (it's special enough), rather than having
a bunch of conditionals scattered everywhere. One test is no longer
even applicable since the race it tested is no longer possible (the
code doesn't exist).
The bug that this fixes is that when the Transport reads a bodyless
response from a server, it was returning that response before
returning the persistent connection to the idle pool. As a result,
~1/1000 of serial requests would end up creating a new connection
rather than re-using the just-used connection due to goroutine
scheduling chance. Instead, this now adds bodyless responses'
connections back to the idle pool first, then sends the response to
the RoundTrip goroutine, but making sure that the RoundTrip goroutine
is outside of its select on the connection dying.
There's a new buffered channel involved now, which is a minor
complication, but it's much more self-contained and well-documented
than the previous complexity. (The alternative of making the
responseAndError channel itself unbuffered is too invasive and risky
at this point; it would require a number of changes to avoid
deadlocked goroutines in error cases)
In any case, flakes look to be gone now. We'll see if trybots agree.
Fixes#13633
Change-Id: I95a22942b2aa334ae7c87331fddd751d4cdfdffc
Reviewed-on: https://go-review.googlesource.com/17890
Reviewed-by: Russ Cox <rsc@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
This might deflake it. Or it'll at least give us more debugging clues.
Fixes#13626 maybe
Change-Id: Ie8cd0375d60dad033ec6a64830a90e7b9152a3d9
Reviewed-on: https://go-review.googlesource.com/17825
Reviewed-by: Austin Clements <austin@google.com>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
CloseNotifier wasn't well specified previously. This CL simplifies its
implementation, clarifies the public documentation on CloseNotifier,
clarifies internal documentation on conn, and fixes two CloseNotifier
bugs in the process.
The main change, though, is tightening the rules and expectations for using
CloseNotifier:
* the caller must consume the Request.Body first (old rule, unwritten)
* the received value is the "true" value (old rule, unwritten)
* no promises for channel sends after Handler returns (old rule, unwritten)
* a subsequent pipelined request fires the CloseNotifier (new behavior;
previously it never fired and thus effectively deadlocked as in #13165)
* advise that it should only be used without HTTP/1.1 pipelining (use HTTP/2
or non-idempotent browsers). Not that browsers actually use pipelining.
The main implementation change is that each Handler now gets its own
CloseNotifier channel value, rather than sharing one between the whole
conn. This means Handlers can't affect subsequent requests. This is
how HTTP/2's Server works too. The old docs never clarified a behavior
either way. The other side effect of each request getting its own
CloseNotifier channel is that one handler can't "poison" the
underlying conn preventing subsequent requests on the same connection
from using CloseNotifier (this is #9763).
In the old implementation, once any request on a connection used
ClosedNotifier, the conn's underlying bufio.Reader source was switched
from the TCPConn to the read side of the pipe being fed by a
never-ending copy. Since it was impossible to abort that never-ending
copy, we could never get back to a fresh state where it was possible
to return the underlying TCPConn to callers of Hijack. Now, instead of
a never-ending Copy, the background goroutine doing a Read from the
TCPConn (or *tls.Conn) only reads a single byte. That single byte
can be in the request body, a socket timeout error, io.EOF error, or
the first byte of the second body. In any case, the new *connReader
type stitches sync and async reads together like an io.MultiReader. To
clarify the flow of Read data and combat the complexity of too many
wrapper Reader types, the *connReader absorbs the io.LimitReader
previously used for bounding request header reads. The
liveSwitchReader type is removed. (an unused switchWriter type is also
removed)
Many fields on *conn are also documented more fully.
Fixes#9763 (CloseNotify + Hijack together)
Fixes#13165 (deadlock with CloseNotify + pipelined requests)
Change-Id: I40abc0a1992d05b294d627d1838c33cbccb9dd65
Reviewed-on: https://go-review.googlesource.com/17750
Reviewed-by: Russ Cox <rsc@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Updates bundled copy of x/net/http2 to include
https://golang.org/cl/17823 (catching panics in Handlers)
Fixes#13555
Change-Id: I08e4e38e736a8d93f5ec200e8041c143fc6eafce
Reviewed-on: https://go-review.googlesource.com/17824
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This CL also updates the bundled http2 package with the h2 fix from
https://golang.org/cl/17757Fixes#13159
Change-Id: If0e3b4bd04d0dceed67d1b416ed838c9f1961576
Reviewed-on: https://go-review.googlesource.com/17758
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
I thought that we avoided creating on-disk Unix sockets,
but I was mistaken. Use one to test CL 17458.
Fixes#11826.
Change-Id: Iaa1fb007b95fa6be48200586522a6d4789ecd346
Reviewed-on: https://go-review.googlesource.com/17725
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
New implementation of TimeoutHandler: buffer everything to memory.
All or nothing: either the handler finishes completely within the
timeout (in which case the wrapper writes it all), or it misses the
timeout and none of it gets written, in which case handler wrapper can
reliably print the error response without fear that some of the
wrapped Handler's code already wrote to the output.
Now the goroutine running the wrapped Handler has its own write buffer
and Header copy.
Document the limitations.
Fixes#9162
Change-Id: Ia058c1d62cefd11843e7a2fc1ae1609d75de2441
Reviewed-on: https://go-review.googlesource.com/17752
Reviewed-by: David Symonds <dsymonds@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
At present, the series of File{Conn,Listener,PacketConn} APIs are the
only way to configure platform-specific socket options such as
SO_REUSE{ADDR,PORT}, TCP_FASTOPEN. This change adds missing test cases
that test read and write operations on connections created by File APIs
and removes redundant parameter tests which are already tested in
server_test.go.
Also adds comment on full stack test cases for IPConn.
Fixes#10730.
Change-Id: I67abb083781b602e876f72a6775a593c0f363c38
Reviewed-on: https://go-review.googlesource.com/17476
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Host names in URLs must not use %-escaping for ASCII bytes, per RFC 3986.
url.Parse has historically allowed spaces and < > " in the URL host.
In Go 1.5, URL's String method started escaping those,
but then Parse would rejects the escaped form.
This CL is an attempt at some consistency between Parse and String
as far as the accepted host characters and the encoding of host characters,
so that if Parse succeeds, then Parse -> String -> Parse also succeeds.
Allowing space seems like a mistake, so reject that in Parse.
(Similarly, reject \t, \x01, and so on, all of which were being allowed.)
Allowing < > " doesn't seem awful, so continue to do that,
and go back to the Go 1.4 behavior of not escaping them in String.
Fixes#11302.
Change-Id: I0bf65b874cd936598f20694574364352a5abbe5f
Reviewed-on: https://go-review.googlesource.com/17387
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Fixes some failing Google tests when run under Go tip (1.6).
Updates #12986
Change-Id: I0ca4d20f6103d10ea9464e45730085401336dada
Reviewed-on: https://go-review.googlesource.com/17698
Reviewed-by: Russ Cox <rsc@golang.org>
Reviewed-by: Nodir Turakulov <nodir@google.com>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Until recently, we always permitted an empty string to NewRequest.
Keep that property, since it broke tests within in Google when trying
out Go 1.6, and probably would've broken others too.
Change-Id: Idddab1ae7b9423d5caac00af2c897fe1065b600b
Reviewed-on: https://go-review.googlesource.com/17699
Reviewed-by: Russ Cox <rsc@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
The current implementation including Go 1.5 through 1.5.2 misuses
Windows API and mishandles the returned values from GetAdapterAddresses
on Windows. This change fixes various issues related to network facility
information by readjusting interface and interface address parsers.
Updates #5395.
Updates #10530.
Updates #12301.
Updates #12551.
Updates #13542.
Fixes#12691.
Fixes#12811.
Fixes#13476.
Fixes#13544.
Also fixes fragile screen scraping test cases in net_windows_test.go.
Additional information for reviewers:
It seems like almost all the issues above have the same root cause and
it is misunderstanding of Windows API. If my interpretation of the
information on MSDN is correctly, current implementation contains the
following bugs:
- SIO_GET_INTERFACE_LIST should not be used for IPv6. The behavior of
SIO_GET_INTERFACE_LIST is different on kernels and probably it doesn't
work correctly for IPv6 on old kernels such as Windows XP w/ SP2.
Unfortunately MSDN doesn't describe the detail of
SIO_GET_INTERFACE_LIST, but information on the net suggests so.
- Fetching IP_ADAPTER_ADDRESSES structures with fixed size area may not
work when using IPv6. IPv6 generates ton of interface addresses for
various addressing scopes. We need to adjust the area appropriately.
- PhysicalAddress field of IP_ADAPTER_ADDRESSES structure may have extra
space. We cannot ignore PhysicalAddressLength field of
IP_ADAPTER_ADDRESS structure.
- Flags field of IP_ADAPTER_ADDRESSES structure doesn't represent any of
administratively and operatinal statuses. It just represents settings
for windows network adapter.
- MTU field of IP_ADAPTER_ADDRESSES structure may have a uint32(-1) on
64-bit platform. We need to convert the value to interger
appropriately.
- IfType field of IP_ADAPTER_ADDRESSES structure is not a bit field.
Bitwire operation for the field is completely wrong.
- OperStatus field of IP_ADAPTER_ADDRESSES structure is not a bit field.
Bitwire operation for the field is completely wrong.
- IPv6IfIndex field of IP_ADAPTER_ADDRESSES structure is just a
substitute for IfIndex field. We cannot prefer IPv6IfIndex to IfIndex.
- Windows XP, 2003 server and below don't set OnLinkPrefixLength field
of IP_ADAPTER_UNICAST_ADDRESS structure. We cannot rely on the field
on old kernels. We can use FirstPrefix field of IP_ADAPTER_ADDRESSES
structure and IP_ADAPTER_PREFIX structure instead.
- Length field of IP_ADAPTER_{UNICAST,ANYCAST,MULTICAST}_ADDRESS
sturecures doesn't represent an address prefix length. It just
represents a socket address length.
Change-Id: Icabdaf7bd1d41360a981d2dad0b830b02b584528
Reviewed-on: https://go-review.googlesource.com/17412
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Use Windows getmac command to verify interface
MAC addresses net package returns.
The test is to be enabled once issue #12691 is fixed.
Updates #12691
Change-Id: Ic28c83303590cb4d48ee025250d4b6e30683bfd4
Reviewed-on: https://go-review.googlesource.com/17632
Reviewed-by: Mikio Hara <mikioh.mikioh@gmail.com>
Run-TryBot: Alex Brainman <alex.brainman@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Use windows netsh command to verify interface
addresses and netmasks net package returns.
The test is to be enabled once issue #12811
is fixed.
Updates #12811
Change-Id: I191e350a1403e5133791d4ec59561fefa24f5c61
Reviewed-on: https://go-review.googlesource.com/17478
Reviewed-by: Mikio Hara <mikioh.mikioh@gmail.com>
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This reverts commit f25f6eab0c.
Sorry, this was not meant to go in without the ztypes_freebsd_arm.go and the copyFromV9 function.
Change-Id: I4ac2a8a23809ec1b1b9e42992cd0f3c349848f06
Reviewed-on: https://go-review.googlesource.com/17472
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
Run-TryBot: Alex Brainman <alex.brainman@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This change makes existing Lookup API test cases conform to the new
return value form that all the Lookup APIs except LookupTXT must return
a single or multiple absolute domain names.
Updates #12189.
Fixes#12193.
Change-Id: I03ca09be5bff80e818fbcdc26039daa33d5440a8
Reviewed-on: https://go-review.googlesource.com/17411
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Switch IfMsghdr and IfaMsghdr to their 'l' variants, make the IfData layout
to be based on FreeBSD-11.0 (freebsdVersion >= 1100011).
Using freebsdVersion, detect the appropriate layout at runtime and decode
routing socket messages into the new IfData layout.
Fixes#11641
Change-Id: Ic7ec550f00c0d15f46a36f560d835e4f138f61e1
Reviewed-on: https://go-review.googlesource.com/14757
Reviewed-by: Russ Cox <rsc@golang.org>
This is an example of converting an old HTTP/1-only test to test
against both HTTP/1 and HTTP/2.
Please send more of these!
Also, for comparing the http.Transport's responses between HTTP/1 and
HTTP/2, see clientserver_test.go's h12Compare type and tests using
h12Compare. Sometimes that's the more appropriate option.
Change-Id: Iea24d844481efd5849173b60e15dcc561a32b88f
Reviewed-on: https://go-review.googlesource.com/17409
Reviewed-by: Burcu Dogan <jbd@google.com>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
RFC 2047 tokens like =?utf-8?B?whatever?= can only appear
unquoted, but this code was trying to decode them even when
they came out of quoted strings. Quoted strings must be left alone.
Fixes#11294.
Change-Id: I41b371f5b1611f1e56d93623888413d07d4ec878
Reviewed-on: https://go-review.googlesource.com/17381
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Parsing literal IPv6 address with zone identifier is already supported
when not using cgo. This change enables it when using cgo too.
Fixes#12241.
Change-Id: I3ed78c9e750e75eff0dae76ba8608df39503cf85
Reviewed-on: https://go-review.googlesource.com/17215
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Change-Id: Ic704a2614e310bc7aa3bdee89a020c27f4292efa
Reviewed-on: https://go-review.googlesource.com/17410
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This change returns rooted DNS names on Plan 9,
for consistency with other operating systems.
Updates #12193.
Change-Id: If983920c5b9a8f67d4ccb51bb295fac8dfb87e88
Reviewed-on: https://go-review.googlesource.com/15581
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: David du Colombier <0intro@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Mikio Hara <mikioh.mikioh@gmail.com>
This makes TestTransportResponseCloseRace much faster and no longer
flaky.
In the process it also cleans up test hooks in net/http which were
inconsistent and scattered.
Change-Id: Ifd0b11dbc7e8915c24eb5bdc36731ed6751dd7ec
Reviewed-on: https://go-review.googlesource.com/17316
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
This CL also changes windows LookupSRV to return
_xmpp-server._tcp.google.com. as cname instead of google.com
similar to linux. Otherwise TestLookupDots still fails.
Updates #12193 (with plan9 still to do)
Change-Id: Id225e15bee95037cdb4226803506cce690c5d341
Reviewed-on: https://go-review.googlesource.com/13887
Run-TryBot: Alex Brainman <alex.brainman@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Add the test index so it is easier to find which test case failed.
Change-Id: Ic04682651b26b137355950ff0c51bdbdb1d85a9c
Reviewed-on: https://go-review.googlesource.com/17351
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
When the name of an Address contains non-ASCII characters,
Address.String() used mime.QEncoding to encode the name.
However certain characters are forbidden when an encoded-word is
in a phrase context (see RFC 2047 section 5.3) and these
characters are not encoded by mime.QEncoding.
In this case we now use mime.BEncoding (base64 encoding) so that
forbidden characters are also encoded.
Fixes#11292
Change-Id: I52db98b41ece439295e97d7e94c8190426f499c2
Reviewed-on: https://go-review.googlesource.com/16012
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This mirrors the same behavior and API from the server code to the
client side: if TLSNextProto is nil, HTTP/2 is on by default for
both. If it's non-nil, the user was trying to do something fancy and
step out of their way.
Updates #6891
Change-Id: Ia31808b71f336a8d5b44b985591d72113429e1d4
Reviewed-on: https://go-review.googlesource.com/17300
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
If we try to reuse a connection that the server is in the process of
closing, we may end up successfully writing out our request (or a
portion of our request) only to find a connection error when we try to
read from (or finish writing to) the socket. This manifests as an EOF
returned from the Transport's RoundTrip.
The issue, among others, is described in #4677.
This change follows some of the Chromium guidelines for retrying
idempotent requests only when the connection has been already been used
successfully and no header data has yet been received for the response.
As part of this change, an unexported error was defined for
errMissingHost, which was previously defined inline. errMissingHost is
the only non-network error returned from a Request's Write() method.
Additionally, this breaks TestLinuxSendfile because its test server
explicitly triggers the type of scenario this change is meant to retry
on. Because that test server stops accepting conns on the test listener
before the retry, the test would time out. To fix this, the test was
altered to use a non-idempotent test type (POST).
Change-Id: I1ca630b944f0ed7ec1d3d46056a50fb959481a16
Reviewed-on: https://go-review.googlesource.com/3210
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
The builtin name resolver using various resolution techniques is a bit
complicated and we sometimes fotget to take care of all the go and cgo
code paths and exchanging information to local and remote sources. This
change makes LookupAddr return absolute domain names even in the case of
local source.
Updates #12189.
Fixes#12240.
Change-Id: Icdd3375bcddc7f5d4d3b24f134d93815073736fc
Reviewed-on: https://go-review.googlesource.com/17216
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
The previous change for #12806 modified internal lookup tables and made
LookupAddr return forcibly lowercased host names by accident.
This change fixes the issue again without any behavioral change for
LookupAddr and adds missing test cases for lookupStaticHost and
lookupStaticAddr.
Updates #12806.
Fixes#13359.
Change-Id: Ifff4741cd79eb8b320b1b0f8c5e02b3a167c9fa8
Reviewed-on: https://go-review.googlesource.com/17217
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
And updates h2_bundle.go with the fix from x/net/http2.
Fixes#13298
Updates #6891
Change-Id: Ia25f22fa10e2a64b9d59211269882681aa18c101
Reviewed-on: https://go-review.googlesource.com/17241
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Andrew Gerrand <adg@golang.org>
Factor out duplicated race thunks from sync, syscall net
and fmt packages into a separate package and use it.
Fixes#8593
Change-Id: I156869c50946277809f6b509463752e7f7d28cdb
Reviewed-on: https://go-review.googlesource.com/14870
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Dmitry Vyukov <dvyukov@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This compares the behavior of server handlers and the net/http
Transport in both HTTP/1 and HTTP/2 mode and verifies they're the
same.
This also moves some client<->server tests into clientserver_test.go.
Many of them were in serve_test.go or transport_test.go but were
basically testing both.
h2_bundle.go is an update of the golang.org/x/net/http2 code
from https://golang.org/cl/17204 (x/net git rev c745c36eab10)
Fixes#13315Fixes#13316Fixes#13317
Fixes other stuff found in the process too
Updates #6891 (http2 support in general)
Change-Id: Id9c45fad44cdf70ac95d2b89e578d66e882d3cc2
Reviewed-on: https://go-review.googlesource.com/17205
Reviewed-by: Andrew Gerrand <adg@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
No code changes.
Change-Id: Ibbba7c86007d74b853fb59aa742f87783bd69503
Reviewed-on: https://go-review.googlesource.com/16541
Reviewed-by: Ian Lance Taylor <iant@golang.org>
The gccgo bug report https://gcc.gnu.org/PR65785 points out that the
multicast listen tests will use the network even with -test.short.
Fix test by checking testing.Short with a nil interface.
Change-Id: I7eab8df34fe3b78fc376912312fac9d0f94977f1
Reviewed-on: https://go-review.googlesource.com/17154
Reviewed-by: Mikio Hara <mikioh.mikioh@gmail.com>
This CL adds skipped failing tests, showing differences between HTTP/1
and HTTP/2 behavior. They'll be fixed in later commits.
Only a tiny fraction of the net/http tests have been split into their
"_h1" and "_h2" variants. That will also continue. (help welcome)
Updates #6891
Updates #13315
Updates #13316
Updates #13317
Change-Id: I16c3c381dbe267a3098fb266ab0d804c36473a64
Reviewed-on: https://go-review.googlesource.com/17046
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Andrew Gerrand <adg@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Fix regression from https://golang.org/cl/16829 ("require valid methods
in NewRequest and Transport.RoundTrip").
An empty string is a valid method (it means "GET", per the docs).
Fixes#13311
Change-Id: I26b71dc4ccc146498b5d7e38fbe31ed11dd5a6cf
Reviewed-on: https://go-review.googlesource.com/16952
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Andrew Gerrand <adg@golang.org>
Found by cmd/vet.
Change-Id: Id570ecd76c3f1efd9696680ccd9799610217f8f7
Reviewed-on: https://go-review.googlesource.com/17042
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Only apply RFC 6724's CommonPrefixLen rule for IPv4 source/destination
pairs that are members of the same IPv4 special purpose block.
Fixes#13283.
Change-Id: I2f7c26b408dd4675dfc5c1959e22d05b43bb8241
Reviewed-on: https://go-review.googlesource.com/16995
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Inspect the crypto/tls error to recognize this case and give a more
helpful error.
Fixes#11111.
Change-Id: I63f6af8c375aa892326ccccbd29655d54d68df0b
Reviewed-on: https://go-review.googlesource.com/16079
Run-TryBot: Caleb Spare <cespare@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Exported methods of unexported embedded structs get added
correctly to the pool. Behavior is unchanged before and after
https://golang.org/cl/14085.
Change-Id: I2b4053bab02ff045f0a4577b8114808a60aae27e
Reviewed-on: https://go-review.googlesource.com/16305
Reviewed-by: Russ Cox <rsc@golang.org>
Fixes#13198
The output of netsh is encoded with ANSI encoding. So doesn't match with UTF-8 strings.
Write output as UTF-8 using powershell.
Change-Id: I6c7e93c590ed407f24ae847601d71df9523e028c
Reviewed-on: https://go-review.googlesource.com/16756
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
mips64 strace doesn't support sendfile64 and will error out if we
specify that with `-e trace='. So we use sendfile for mips64 here.
Change-Id: If5e2bb39866ca3a77dcc40e4db338ba486921d89
Reviewed-on: https://go-review.googlesource.com/14455
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
(This relands commit a4dcc692011bf1ceca9b1a363fd83f3e59e399ee.)
https://tools.ietf.org/html/rfc6066#section-3 states:
“Literal IPv4 and IPv6 addresses are not permitted in "HostName".”
However, if an IP literal was set as Config.ServerName (which could
happen as easily as calling Dial with an IP address) then the code would
send the IP literal as the SNI value.
This change filters out IP literals, as recognised by net.ParseIP, from
being sent as the SNI value.
Fixes#13111.
Change-Id: I6e544a78a01388f8fe98150589d073b917087f75
Reviewed-on: https://go-review.googlesource.com/16776
Run-TryBot: Adam Langley <agl@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Show more than one character when we recieve a unsolicited
response on an idle HTTP channel. Showing more than one
byte is really useful when you want to debug your program
when you get this message.
Change-Id: I3caf9f06420e7c2a2de3e4eb302c5dab95428fdb
Reviewed-on: https://go-review.googlesource.com/13959
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Fixes#12301
Change-Id: I8d01ec9551c6cff7e6129e06a7deb36a3be9de41
Reviewed-on: https://go-review.googlesource.com/16751
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Updates to git rev 042ba42f (https://golang.org/cl/16734)
This moves all the code for glueing the HTTP1 and HTTP2 transports
together out of net/http and into x/net/http2 where others can use it,
and where it has tests.
Change-Id: I143ac8bb61eed36c87fd838b682ebb37b81b8c2c
Reviewed-on: https://go-review.googlesource.com/16735
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Mathieu Lonjaret <mathieu.lonjaret@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
The GODEBUG option remains, for now, but only for turning it off.
We'll decide what to do with it before release.
This CL includes the dependent http2 change (https://golang.org/cl/16692)
in the http2 bundle (h2_bundle.go).
Updates golang/go#6891
Change-Id: If9723ef627c7ba4f7343dc8cb89ca88ef0fbcb10
Reviewed-on: https://go-review.googlesource.com/16693
Reviewed-by: Blake Mizerany <blake.mizerany@gmail.com>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Noticed from nacl trybot failures on new tests in
https://golang.org/cl/16630
Related earlier fix of mine to nacl's listen code:
syscall: fix nacl listener to not accept connections once closed
https://go-review.googlesource.com/15940
Perhaps a better fix (in the future?) would be to remove the listener
from the map at close, but that didn't seem entirely straightforward
last time I looked into it. It's not my code, but it seems that the
map entry continues to have a purpose even after Listener close. (?)
But given that this code is only really used for running tests and the
playground, this seems fine.
Change-Id: I43bfedc57c07f215f4d79c18f588d3650687a48f
Reviewed-on: https://go-review.googlesource.com/16650
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
The Server's server goroutine was panicing (but recovering) when
cleaning up after handling a request. It was pretty harmless (it just
closed that one connection and didn't kill the whole process) but it
was distracting.
Updates #13135
Change-Id: I2a0ce9e8b52c8d364e3f4ce245e05c6f8d62df14
Reviewed-on: https://go-review.googlesource.com/16572
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Andrew Gerrand <adg@golang.org>
This change makes Dial, Listen and ListenPacket with invalid port fail
whatever GODEBUG=netdns is.
Please be informed that cgoLookupPort with an out of range literal
number may return either the lower or upper bound value, 0 or 65535,
with no error on some platform.
Fixes#11715.
Change-Id: I43f9c4fb5526d1bf50b97698e0eb39d29fd74c35
Reviewed-on: https://go-review.googlesource.com/12447
Reviewed-by: Ian Lance Taylor <iant@golang.org>
