This CL chops existing ancillary data socket option handlers and
puts them into platform dependent ancillary data socket option
binding table for code readability.

Fixes golang/go#6710.

LGTM=iant
R=iant
CC=golang-codereviews
https://golang.org/cl/153860043

This CL chops existing sticky socket option handlers and puts them
into platform dependent sticky socket option binding table for
supporting multicast features such as source filtering for any-source
multicast, source-specific multicast.

Also adds tiny syscall shims to help to support solaris, to improve
existing platform support.

LGTM=iant
R=iant
CC=golang-codereviews
https://golang.org/cl/140640045

LGTM=iant
R=iant
CC=golang-codereviews
https://golang.org/cl/154770043

LGTM=iant
R=iant
CC=golang-codereviews
https://golang.org/cl/142540044

LGTM=iant
R=iant
CC=golang-codereviews
https://golang.org/cl/146210043

This CL factors out ICMP utilities used by both ipv4 and ipv6 packages.

LGTM=iant
R=iant
CC=golang-codereviews
https://golang.org/cl/143460043

LGTM=minux
R=golang-codereviews, minux
CC=golang-codereviews
https://golang.org/cl/146890043

This CL factors out number resources used by both ipv4 and ipv6 packages.

LGTM=iant
R=iant
CC=golang-codereviews
https://golang.org/cl/124340043

The syscall package of standard library is now locked down
and go.sys/unix is under curation. Also go.sys/unix doesn't
help supporting go1.3 and earlier users. There's no way to
extend this package without holding the platform adaptation
code.

LGTM=iant
R=iant
CC=golang-codereviews
https://golang.org/cl/146740043

It seems like it was meant to be this way. There was already a for loop, but then it made a recursive call instead.

LGTM=sameer
R=golang-codereviews, sameer
CC=golang-codereviews
https://golang.org/cl/113540044

to construct the context left-to-right.  External implementations of the
Context interface may break the chain, but establishing this pattern now
may encourage them to do the right thing.

LGTM=bcmills
R=bcmills
CC=golang-codereviews
https://golang.org/cl/116430044

LGTM=bcmills
R=bcmills
CC=golang-codereviews
https://golang.org/cl/116420045

WithCancel, and WithTimeout to use different concrete types.  Update the
tests and documentation.

This change reduces the size of context structs, reduces the number of
allocations (see TestAllocs) and removes unnecessary pointers from the
heap, such as the timer field for non-timer contexts.

IMPORTANT: I've removed the code in these functions that handles nil Context parameters.  Passing a nil parent Context will now cause a panic.

LGTM=bcmills
R=bcmills, crawshaw
CC=adonovan, golang-codereviews, rsc
https://golang.org/cl/116400043

This is the first step in splitting the various context implementations
into smaller types.

Add a test that creates a large, random stack of Contexts and tests that
they work properly.

LGTM=crawshaw
R=crawshaw
CC=golang-codereviews
https://golang.org/cl/115350044

Use consistent spelling.

LGTM=bcmills
R=bcmills
CC=golang-codereviews
https://golang.org/cl/117170044

LGTM=dr.volker.dobler
R=dr.volker.dobler
CC=golang-codereviews
https://golang.org/cl/116080045

makes the Context interface dependent only on standard packages, which
means types in other packages can implement this interface without
depending on go.net/context.

Remove the NewKey function and add examples showing how to use
unexported types to avoid key collisions.  This is the same model used
by http://www.gorillatoolkit.org/pkg/context, except we associate values
with a specific Context instead of storing them in a package-level map.

LGTM=crawshaw
R=golang-codereviews, crawshaw, dsymonds
CC=golang-codereviews, rsc
https://golang.org/cl/104480044

Do not assume that a particular code path is selected
in WithTimeout.

Also Windows cannot wait for less then 15 millisecond,
so use that instead of 1 nanosecond in test. Otherwise
test takes too long while it looks like it is quick.

Fixes golang/go#8033.

LGTM=crawshaw
R=golang-codereviews, crawshaw
CC=golang-codereviews
https://golang.org/cl/103470044

LGTM=andybalholm, nigeltao
R=golang-codereviews, gobot, nigeltao, andybalholm
CC=golang-codereviews
https://golang.org/cl/93680045

Also rewrite it a bit for clarity (IMO).

LGTM=pzm, r
R=pzm, adg, r
CC=golang-codereviews
https://golang.org/cl/96560043

LGTM=iant
R=golang-codereviews, iant
CC=golang-codereviews
https://golang.org/cl/98440046

LGTM=iant
R=golang-codereviews, iant
CC=golang-codereviews
https://golang.org/cl/95560048

This CL disables the use of ip_mreqn with IP_{ADD,DROP}_MEMBERSHIP on
FreeBSD due to some test flakiness on some kernel versions that support
IGMPv3. It will be fixed once we support IGMPv3 related features such
as source-specific multicasting and source filtering.

LGTM=iant
R=golang-codereviews, iant
CC=golang-codereviews
https://golang.org/cl/94670043

This CL restores use of syscall functions and constants that
doesn't break the build on Go 1.1 and beyond.

LGTM=iant
R=golang-codereviews, iant
CC=golang-codereviews
https://golang.org/cl/92320046

This CL adds support for dragonfly and IP_PKTINFO support for darwin
with less dependency on syscall package.

Update golang/go#7175
Fixes golang/go#7172.

LGTM=iant
R=golang-codereviews, gobot, iant
CC=golang-codereviews
https://golang.org/cl/97800043

deadlines, cancellation, and other values across APIs and between
processes.

LGTM=crawshaw
R=rsc, crawshaw
CC=bradfitz, golang-codereviews
https://golang.org/cl/99330045

As pointed out at
https://groups.google.com/forum/#!topic/golang-nuts/LJozHIXAAJY,
`<<p>html</p>` was parsed as `&lt;&lt;p&gt;html</p>`.
There was no test case for this. Chrome parses it as `&lt<p>html</p>`,
and that seems to be correct. We were missing the
"Reconcume the current input character" step at
http://www.whatwg.org/specs/web-apps/current-work/multipage/tokenization.html#tag-open-state

LGTM=nigeltao
R=golang-codereviews, gobot, nigeltao
CC=golang-codereviews, nigeltao
https://golang.org/cl/96060044

LGTM=mikioh.mikioh
R=mikioh.mikioh, minux.ma
CC=golang-codereviews
https://golang.org/cl/97970045

LGTM=adonovan
R=adonovan
CC=golang-codereviews, golang-dev
https://golang.org/cl/97950043

LGTM=iant
R=golang-codereviews, iant
CC=golang-codereviews
https://golang.org/cl/91020043

Fixes golang/go#7173.

LGTM=iant
R=golang-codereviews, iant
CC=golang-codereviews
https://golang.org/cl/90820044

Update golang/go#7174

LGTM=iant
R=golang-codereviews, iant
CC=golang-codereviews
https://golang.org/cl/91770049

Fixes golang/go#5709.
Fixes golang/go#5811.

LGTM=dave
R=dave
CC=golang-codereviews
https://golang.org/cl/21360043

SOCKS5 uses a single-byte field for domain name length. This change
causes dials to domain names longer than 255 chars to fail instead
of sending an invalid request to the proxy.

LGTM=mikioh.mikioh
R=golang-codereviews, mikioh.mikioh
CC=golang-codereviews
https://golang.org/cl/90790044

have in the bit-packing.

This was previously printed to stderr by gen.go, but is now written to
the generated table.go, so that we have better records of how it
changes over time.

LGTM=dr.volker.dobler
R=dr.volker.dobler
CC=golang-codereviews
https://golang.org/cl/89090043

TBR=volker.dobler
R=golang-codereviews
CC=golang-codereviews
https://golang.org/cl/89080043

It's been observed when the node under test has a tiny resource
configutation or package http has changed the behavior of its own
active connection pool.

For example,
http://build.golang.org/log/8912bc0944628cf1b4fe4063a77d36d19f9dd6a3

LGTM=adg
R=adg
CC=golang-codereviews
https://golang.org/cl/78640043

LGTM=nigeltao
R=nigeltao
CC=bradfitz, golang-codereviews
https://golang.org/cl/33810044

the Public Suffix List as a compact sequence of uint32s.

Currently:
max children 366 (capacity 511)
max text offset 22351 (capacity 32767)
max text length 36 (capacity 63)
max hi 6406 (capacity 16383)
max lo 6399 (capacity 16383)

LGTM=dr.volker.dobler
R=dr.volker.dobler
CC=golang-codereviews
https://golang.org/cl/62000046

Also add a sanity check for the erroneous all-caps "TOKYO" that was
fixed in http://hg.mozilla.org/mozilla-central/rev/e85f83f352de

LGTM=dr.volker.dobler
R=dr.volker.dobler
CC=golang-codereviews
https://golang.org/cl/58890045