This change delays IP protocol stack-snooping system calls until the
start of connection setup for the better experience with some system
call auditing, such as seccomp on Linux. See #16789 for examples.
Also updates the documentation on favoriteAddrFamily, which is the
owner of stack-snooping system calls.
Fixes#16789.
Change-Id: I4af27bc1ed06ffb1f657b6f6381c328c1f41c66c
Reviewed-on: https://go-review.googlesource.com/40750
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This change makes use of new routing message APIs for BSD variants to
support FreeBSD 11 and newer versions of other BSDs.
Fixes#7849.
Fixes#14724.
Change-Id: I56c7886d6622cdeddd7cc29c8a8062dcc06216d5
Reviewed-on: https://go-review.googlesource.com/22451
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This change reorganizes test cases for surveying network interfaces and
address prefixes to make sure which part of the functionality is broken.
Updates #7849.
Change-Id: If6918075802eef69a7f1ee040010b3c46f4f4b97
Reviewed-on: https://go-review.googlesource.com/22990
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This change adds Zone field to IPNet structure for making it possible to
determine which network interface is associated with IPv6 link-local
address. Also makes ParseCIDR and IPNet.String capable handling literal
IPv6 address prefixes with zone identifier.
Fixes#14518.
Change-Id: I8f8a40d3b4f500ffef25728d4995651379d8408a
Reviewed-on: https://go-review.googlesource.com/19946
Reviewed-by: Ian Lance Taylor <iant@golang.org>
The tree's pretty inconsistent about single space vs double space
after a period in documentation. Make it consistently a single space,
per earlier decisions. This means contributors won't be confused by
misleading precedence.
This CL doesn't use go/doc to parse. It only addresses // comments.
It was generated with:
$ perl -i -npe 's,^(\s*// .+[a-z]\.) +([A-Z]),$1 $2,' $(git grep -l -E '^\s*//(.+\.) +([A-Z])')
$ go test go/doc -update
Change-Id: Iccdb99c37c797ef1f804a94b22ba5ee4b500c4f7
Reviewed-on: https://go-review.googlesource.com/20022
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Dave Day <djd@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This is a subset of https://golang.org/cl/20022 with only the copyright
header lines, so the next CL will be smaller and more reviewable.
Go policy has been single space after periods in comments for some time.
The copyright header template at:
https://golang.org/doc/contribute.html#copyright
also uses a single space.
Make them all consistent.
Change-Id: Icc26c6b8495c3820da6b171ca96a74701b4a01b0
Reviewed-on: https://go-review.googlesource.com/20111
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@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>
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>
This change adds socket system call hooks to existing test cases for
simulating a bit complicated network conditions to help making timeout
and dual IP stack test cases work more properly in followup changes.
Also test cases print debugging information in non-short mode like the
following:
Leaked goroutines:
net.TestWriteTimeout.func2(0xc20802a5a0, 0xc20801d000, 0x1000, 0x1000, 0xc2081d2ae0)
/go/src/net/timeout_test.go:170 +0x98
created by net.TestWriteTimeout
/go/src/net/timeout_test.go:173 +0x745
net.runDatagramPacketConnServer(0xc2080730e0, 0x2bd270, 0x3, 0x2c1770, 0xb, 0xc2081d2ba0, 0xc2081d2c00)
/go/src/net/server_test.go:398 +0x667
created by net.TestTimeoutUDP
/go/src/net/timeout_test.go:247 +0xc9
(snip)
Leaked sockets:
3: {Cookie:615726511685632 Err:<nil> SocketErr:0}
5: {Cookie:7934075906097152 Err:<nil> SocketErr:0}
Socket statistical information:
{Family:1 Type:805306370 Protocol:0 Opened:17 Accepted:0 Connected:5 Closed:17}
{Family:2 Type:805306369 Protocol:0 Opened:450 Accepted:234 Connected:279 Closed:636}
{Family:1 Type:805306369 Protocol:0 Opened:11 Accepted:5 Connected:5 Closed:16}
{Family:28 Type:805306369 Protocol:0 Opened:95 Accepted:22 Connected:16 Closed:116}
{Family:2 Type:805306370 Protocol:0 Opened:84 Accepted:0 Connected:34 Closed:83}
{Family:28 Type:805306370 Protocol:0 Opened:52 Accepted:0 Connected:4 Closed:52}
Change-Id: I0e84be59a0699bc31245c78e2249423459b8cdda
Reviewed-on: https://go-review.googlesource.com/6390
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This change fixes a missing case that a routing address contains an
invalid address family label but it holds a valid length of address
structure.
Also makes test robust.
Fixes#10041.
Change-Id: I2480ba273929e859896697382d1a75b01a116b98
Reviewed-on: https://go-review.googlesource.com/6391
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This change extends existing test case to Windows for helping to fix
golang.org/issue/5395.
Change-Id: Iff077fa98ede511981df513f48d84c19375b3e04
Reviewed-on: https://go-review.googlesource.com/3304
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Mikio Hara
Brad Fitzpatrick
Martin Möhrmann
Russ Cox
mattn