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dgram: setMulticastInterface() outgoing interface selection #7855

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lostnet
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@lostnet lostnet commented Jul 23, 2016

Checklist
  • make -j4 test (UNIX), or vcbuild test nosign (Windows) passes
  • tests and/or benchmarks are included
  • documentation is changed or added
  • commit message follows commit guidelines
Affected core subsystem(s)

dgram

Description of change

Add wrapper for uv's uv_udp_set_multicast_interface which provides the
sender side mechanism to explicitly select an interface. (The
equivalent receiver side mechanism is the optional 2nd argument of
addMembership().)

@nodejs-github-bot nodejs-github-bot added dgram Issues and PRs related to the dgram subsystem / UDP. c++ Issues and PRs that require attention from people who are familiar with C++. labels Jul 23, 2016
@mscdex mscdex removed the c++ Issues and PRs that require attention from people who are familiar with C++. label Jul 23, 2016
socket2.setMulticastInterface('::');
} catch (e) {
thrown = true;
}
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wrapping this with assert.throws will allow to remove the thrown variable

@santigimeno
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I don't know how difficult it would be to test, but would it be possible to test that the sender is indeed sending the multicast messages using the chosen interface?

@lostnet
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lostnet commented Jul 24, 2016

I don't know how difficult it would be to test, but would it be possible to test that the sender is indeed sending the multicast messages using the chosen interface?

It is very easy to test on a system where you can copy output from an ifconfig -a into your script and at least 2 real interfaces have been setup. For automated tests, its rather hard to get anyone to do the prerequisite manual system configuration.

My current test script (requires ifaces[] to be updated to match the system):
multitest.js.txt
(source of original)

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lostnet commented Jul 24, 2016

Thanks santigimeno, I've made improvements corresponding to each of your comments and verified "make -j4 test" against the new version. Please let me know how it looks.

socket2.bind(0);
socket2.on('listening', common.mustCall(() => {

//Try to set with an invalid Interface address (wrong address class)
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Space after //. Also, Interface doesn't need to be capitalized.

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cjihrig commented Aug 2, 2016

Perhaps you could add a test similar to test/internet/test-dgram-multicast-multi-process.js.

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lostnet commented Aug 2, 2016

Thank you @cjihrig and @yorkie, I agree with, and believe I have addressed all the comments in this second set of review changes.

On test-dgram-multicast-multi-process.js:
I've added default interface selection and explicitly to the membership in that test to show that they do no harm. But the only ways I've seen to test that this kind of network setting isn't always doing a NO-OP is with test frameworks that have either a privileged system configuration stage or a configuration verification stage where they decide if they can test opportunistically. (The test framework has to know what a real non-default interface's IP is and that it isn't physically on the same physical network as the default network or all packets get received simply since there isn't an alternative.)

Please let me know what you think, and if I've missed or misunderstood anything on the other changes,
Will

@@ -0,0 +1,32 @@
'use strict';
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filename in test/parallel should be in lower-case?

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I like the order with regards to dgram-multicast for tab completion and relatedness, so maybe:
test/parallel/test-dgram-multicast-set-interface.js ?
(set_if is the only lowercase I would parse as an IF ioctl and IMO mixing '-'&'' is worse than mixed case.)

@jasnell jasnell added the semver-minor PRs that contain new features and should be released in the next minor version. label Aug 3, 2016
doc/api/dgram.md Outdated
* `multicastInterface` {String}

Sets the outgoing multicast interface using the provided IP. For IPv6, the addresses should use explicit scope to indicate the interface, as in the following example:

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This should likely include some additional detail about when this method should be called and what the side effects are.

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I've added a significant amount of detail (and hopefully used subsections correctly?) But I've intentionally left the question of exactly when a socket is first ready unanswered since it would be redundant to repeat libuv's unusual need to bind before socket operations for every operation.

jasnell added a commit that referenced this pull request Sep 25, 2017
* **crypto**
  * Support for multiple ECDH curves. [#15206](#15206)
* **dgram**
  * Added `setMulticastInterface()` API. [#7855](#7855)
* **n-api**
  * The command-line flag is no longer required to use N-API. [#14902](#14902)
* **tls**
  * Docs-only deprecation of `parseCertString()`. [#14245](#14245)
* **New Contributors**
  * Welcome Sebastiaan Deckers (@sebdeckers) as a new Collaborator! [#15354](#15354)
jasnell added a commit that referenced this pull request Sep 26, 2017
* **crypto**
  * Support for multiple ECDH curves. [#15206](#15206)
* **dgram**
  * Added `setMulticastInterface()` API. [#7855](#7855)
  * Custom lookup functions are now supported. [#14560](#14560)
* **n-api**
  * The command-line flag is no longer required to use N-API. [#14902](#14902)
* **tls**
  * Docs-only deprecation of `parseCertString()`. [#14245](#14245)
* **New Contributors**
  * Welcome Sebastiaan Deckers (@sebdeckers) as a new Collaborator! [#15354](#15354)
jasnell added a commit that referenced this pull request Sep 26, 2017
* **crypto**
  * Support for multiple ECDH curves. [#15206](#15206)
* **dgram**
  * Added `setMulticastInterface()` API. [#7855](#7855)
  * Custom lookup functions are now supported. [#14560](#14560)
* **n-api**
  * The command-line flag is no longer required to use N-API. [#14902](#14902)
* **tls**
  * Docs-only deprecation of `parseCertString()`. [#14245](#14245)
* **New Contributors**
  * Welcome Sebastiaan Deckers (@sebdeckers) as a new Collaborator! [#15354](#15354)
MylesBorins pushed a commit that referenced this pull request Sep 29, 2017
* **crypto**
  * Support for multiple ECDH curves. [#15206](#15206)
* **dgram**
  * Added `setMulticastInterface()` API. [#7855](#7855)
  * Custom lookup functions are now supported. [#14560](#14560)
* **n-api**
  * The command-line flag is no longer required to use N-API. [#14902](#14902)
* **tls**
  * Docs-only deprecation of `parseCertString()`. [#14245](#14245)
* **New Contributors**
  * Welcome Sebastiaan Deckers (@sebdeckers) as a new Collaborator! [#15354](#15354)
addaleax pushed a commit to addaleax/ayo that referenced this pull request Sep 30, 2017
* **crypto**
  * Support for multiple ECDH curves. [#15206](nodejs/node#15206)
* **dgram**
  * Added `setMulticastInterface()` API. [#7855](nodejs/node#7855)
  * Custom lookup functions are now supported. [#14560](nodejs/node#14560)
* **n-api**
  * The command-line flag is no longer required to use N-API. [#14902](nodejs/node#14902)
* **tls**
  * Docs-only deprecation of `parseCertString()`. [#14245](nodejs/node#14245)
* **New Contributors**
  * Welcome Sebastiaan Deckers (@sebdeckers) as a new Collaborator! [#15354](nodejs/node#15354)
MylesBorins pushed a commit that referenced this pull request Jan 16, 2018
Add wrapper for uv's uv_udp_set_multicast_interface which provides the
sender side mechanism to explicitly select an interface. The
equivalent receiver side mechanism is the optional 2nd argument of
addMembership().

PR-URL: #7855
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
MylesBorins pushed a commit that referenced this pull request Jan 17, 2018
Add wrapper for uv's uv_udp_set_multicast_interface which provides the
sender side mechanism to explicitly select an interface. The
equivalent receiver side mechanism is the optional 2nd argument of
addMembership().

PR-URL: #7855
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
@MylesBorins MylesBorins mentioned this pull request Jan 24, 2018
MylesBorins added a commit that referenced this pull request Feb 11, 2018
This LTS release comes with 109 commits, 17 of which are considered
Semver-Minor. This includes 32 which are doc related, 29 which are test
related, 8 which are build / tool related and 1 commit which updates
a dependency.

Notable Changes:

* console:
  - added console.count() and console.clear() (James M Snell)
    #12678
* crypto:
  - expose ECDH class (Bryan English)
    #8188
  - added cypto.randomFill() and crypto.randomFillSync() (Evan Lucas)
    #10209
  - warn on invalid authentication tag length (Tobias Nießen)
    #17566
* deps:
  - upgrade libuv to 1.16.1 (cjihrig)
    #16835
* dgram:
  - added socket.setMulticastInterface() (Will Young)
    #7855
* http:
  - add agent.keepSocketAlive and agent.reuseSocket as to allow
    overridable keep-alive behavior of `Agent` (Fedor Indutny)
    #13005
* lib:
  - return this from net.Socket.end() (Sam Roberts)
    #13481
* module:
  - add builtinModules api that provides list of all builtin modules in
    Node (Jon Moss)
    #16386
* net:
  - return this from getConnections() (Sam Roberts)
    #13553
* promises:
  - more robust stringification for unhandled rejections (Timothy Gu)
    #13784
* repl:
  - improve require() autocompletion (Alexey Orlenko)
    #14409
* src:
  - add openssl-system-ca-path configure option (Daniel Bevenius)
    #16790
  - add --use-bundled-ca --use-openssl-ca check (Daniel Bevenius)
    #12087
  - add process.ppid (cjihrig)
    #16839
* tls:
  - accept `lookup` option for `tls.connect()` (Fedor Indutny)
    #12839
* tools, build:
  - a new macOS installer! (JP Wesselink)
    #15179
* url:
  - WHATWG URL api support (James M Snell)
    #7448
* util:
  - add %i and %f formatting specifiers (Roman Reiss)
    #10308

PR-URL: #18342
MylesBorins pushed a commit that referenced this pull request Feb 12, 2018
Add wrapper for uv's uv_udp_set_multicast_interface which provides the
sender side mechanism to explicitly select an interface. The
equivalent receiver side mechanism is the optional 2nd argument of
addMembership().

PR-URL: #7855
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
MylesBorins added a commit that referenced this pull request Feb 12, 2018
This LTS release comes with 109 commits, 17 of which are considered
Semver-Minor. This includes 32 which are doc related, 29 which are test
related, 8 which are build / tool related and 1 commit which updates
a dependency.

Notable Changes:

* console:
  - added console.count() and console.clear() (James M Snell)
    #12678
* crypto:
  - expose ECDH class (Bryan English)
    #8188
  - added cypto.randomFill() and crypto.randomFillSync() (Evan Lucas)
    #10209
  - warn on invalid authentication tag length (Tobias Nießen)
    #17566
* deps:
  - upgrade libuv to 1.16.1 (cjihrig)
    #16835
* dgram:
  - added socket.setMulticastInterface() (Will Young)
    #7855
* http:
  - add agent.keepSocketAlive and agent.reuseSocket as to allow
    overridable keep-alive behavior of `Agent` (Fedor Indutny)
    #13005
* lib:
  - return this from net.Socket.end() (Sam Roberts)
    #13481
* module:
  - add builtinModules api that provides list of all builtin modules in
    Node (Jon Moss)
    #16386
* net:
  - return this from getConnections() (Sam Roberts)
    #13553
* promises:
  - more robust stringification for unhandled rejections (Timothy Gu)
    #13784
* repl:
  - improve require() autocompletion (Alexey Orlenko)
    #14409
* src:
  - add openssl-system-ca-path configure option (Daniel Bevenius)
    #16790
  - add --use-bundled-ca --use-openssl-ca check (Daniel Bevenius)
    #12087
  - add process.ppid (cjihrig)
    #16839
* tls:
  - accept `lookup` option for `tls.connect()` (Fedor Indutny)
    #12839
* tools, build:
  - a new macOS installer! (JP Wesselink)
    #15179
* url:
  - WHATWG URL api support (James M Snell)
    #7448
* util:
  - add %i and %f formatting specifiers (Roman Reiss)
    #10308

PR-URL: #18342
MylesBorins pushed a commit that referenced this pull request Feb 13, 2018
Add wrapper for uv's uv_udp_set_multicast_interface which provides the
sender side mechanism to explicitly select an interface. The
equivalent receiver side mechanism is the optional 2nd argument of
addMembership().

PR-URL: #7855
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
MylesBorins added a commit that referenced this pull request Feb 13, 2018
This LTS release comes with 109 commits, 17 of which are considered
Semver-Minor. This includes 32 which are doc related, 29 which are test
related, 8 which are build / tool related and 1 commit which updates
a dependency.

Notable Changes:

* console:
  - added console.count() and console.clear() (James M Snell)
    #12678
* crypto:
  - expose ECDH class (Bryan English)
    #8188
  - added cypto.randomFill() and crypto.randomFillSync() (Evan Lucas)
    #10209
  - warn on invalid authentication tag length (Tobias Nießen)
    #17566
* deps:
  - upgrade libuv to 1.16.1 (cjihrig)
    #16835
* dgram:
  - added socket.setMulticastInterface() (Will Young)
    #7855
* http:
  - add agent.keepSocketAlive and agent.reuseSocket as to allow
    overridable keep-alive behavior of `Agent` (Fedor Indutny)
    #13005
* lib:
  - return this from net.Socket.end() (Sam Roberts)
    #13481
* module:
  - add builtinModules api that provides list of all builtin modules in
    Node (Jon Moss)
    #16386
* net:
  - return this from getConnections() (Sam Roberts)
    #13553
* promises:
  - more robust stringification for unhandled rejections (Timothy Gu)
    #13784
* repl:
  - improve require() autocompletion (Alexey Orlenko)
    #14409
* src:
  - add openssl-system-ca-path configure option (Daniel Bevenius)
    #16790
  - add --use-bundled-ca --use-openssl-ca check (Daniel Bevenius)
    #12087
  - add process.ppid (cjihrig)
    #16839
* tls:
  - accept `lookup` option for `tls.connect()` (Fedor Indutny)
    #12839
* tools, build:
  - a new macOS installer! (JP Wesselink)
    #15179
* url:
  - WHATWG URL api support (James M Snell)
    #7448
* util:
  - add %i and %f formatting specifiers (Roman Reiss)
    #10308

PR-URL: #18342
MylesBorins added a commit that referenced this pull request Feb 13, 2018
This LTS release comes with 112 commits, 17 of which are considered
Semver-Minor. This includes 32 which are doc related, 30 which are test
related, 8 which are build / tool related and 1 commit which updates
a dependency.

Notable Changes:

* console:
  - added console.count() and console.clear() (James M Snell)
    #12678
* crypto:
  - expose ECDH class (Bryan English)
    #8188
  - added cypto.randomFill() and crypto.randomFillSync() (Evan Lucas)
    #10209
  - warn on invalid authentication tag length (Tobias Nießen)
    #17566
* deps:
  - upgrade libuv to 1.16.1 (cjihrig)
    #16835
* dgram:
  - added socket.setMulticastInterface() (Will Young)
    #7855
* http:
  - add agent.keepSocketAlive and agent.reuseSocket as to allow
    overridable keep-alive behavior of `Agent` (Fedor Indutny)
    #13005
* lib:
  - return this from net.Socket.end() (Sam Roberts)
    #13481
* module:
  - add builtinModules api that provides list of all builtin modules in
    Node (Jon Moss)
    #16386
* net:
  - return this from getConnections() (Sam Roberts)
    #13553
* promises:
  - more robust stringification for unhandled rejections (Timothy Gu)
    #13784
* repl:
  - improve require() autocompletion (Alexey Orlenko)
    #14409
* src:
  - add openssl-system-ca-path configure option (Daniel Bevenius)
    #16790
  - add --use-bundled-ca --use-openssl-ca check (Daniel Bevenius)
    #12087
  - add process.ppid (cjihrig)
    #16839
* tls:
  - accept `lookup` option for `tls.connect()` (Fedor Indutny)
    #12839
* tools, build:
  - a new macOS installer! (JP Wesselink)
    #15179
* url:
  - WHATWG URL api support (James M Snell)
    #7448
* util:
  - add %i and %f formatting specifiers (Roman Reiss)
    #10308

PR-URL: #18342
MylesBorins added a commit that referenced this pull request Feb 13, 2018
This LTS release comes with 112 commits, 17 of which are considered
Semver-Minor. This includes 32 which are doc related, 30 which are test
related, 8 which are build / tool related and 1 commit which updates
a dependency.

Notable Changes:

* console:
  - added console.count() and console.clear() (James M Snell)
    #12678
* crypto:
  - expose ECDH class (Bryan English)
    #8188
  - added cypto.randomFill() and crypto.randomFillSync() (Evan Lucas)
    #10209
  - warn on invalid authentication tag length (Tobias Nießen)
    #17566
* deps:
  - upgrade libuv to 1.16.1 (cjihrig)
    #16835
* dgram:
  - added socket.setMulticastInterface() (Will Young)
    #7855
* http:
  - add agent.keepSocketAlive and agent.reuseSocket as to allow
    overridable keep-alive behavior of `Agent` (Fedor Indutny)
    #13005
* lib:
  - return this from net.Socket.end() (Sam Roberts)
    #13481
* module:
  - add builtinModules api that provides list of all builtin modules in
    Node (Jon Moss)
    #16386
* net:
  - return this from getConnections() (Sam Roberts)
    #13553
* promises:
  - more robust stringification for unhandled rejections (Timothy Gu)
    #13784
* repl:
  - improve require() autocompletion (Alexey Orlenko)
    #14409
* src:
  - add openssl-system-ca-path configure option (Daniel Bevenius)
    #16790
  - add --use-bundled-ca --use-openssl-ca check (Daniel Bevenius)
    #12087
  - add process.ppid (cjihrig)
    #16839
* tls:
  - accept `lookup` option for `tls.connect()` (Fedor Indutny)
    #12839
* tools, build:
  - a new macOS installer! (JP Wesselink)
    #15179
* url:
  - WHATWG URL api support (James M Snell)
    #7448
* util:
  - add %i and %f formatting specifiers (Roman Reiss)
    #10308

PR-URL: #18342
MayaLekova pushed a commit to MayaLekova/node that referenced this pull request May 8, 2018
This LTS release comes with 112 commits, 17 of which are considered
Semver-Minor. This includes 32 which are doc related, 30 which are test
related, 8 which are build / tool related and 1 commit which updates
a dependency.

Notable Changes:

* console:
  - added console.count() and console.clear() (James M Snell)
    nodejs#12678
* crypto:
  - expose ECDH class (Bryan English)
    nodejs#8188
  - added cypto.randomFill() and crypto.randomFillSync() (Evan Lucas)
    nodejs#10209
  - warn on invalid authentication tag length (Tobias Nießen)
    nodejs#17566
* deps:
  - upgrade libuv to 1.16.1 (cjihrig)
    nodejs#16835
* dgram:
  - added socket.setMulticastInterface() (Will Young)
    nodejs#7855
* http:
  - add agent.keepSocketAlive and agent.reuseSocket as to allow
    overridable keep-alive behavior of `Agent` (Fedor Indutny)
    nodejs#13005
* lib:
  - return this from net.Socket.end() (Sam Roberts)
    nodejs#13481
* module:
  - add builtinModules api that provides list of all builtin modules in
    Node (Jon Moss)
    nodejs#16386
* net:
  - return this from getConnections() (Sam Roberts)
    nodejs#13553
* promises:
  - more robust stringification for unhandled rejections (Timothy Gu)
    nodejs#13784
* repl:
  - improve require() autocompletion (Alexey Orlenko)
    nodejs#14409
* src:
  - add openssl-system-ca-path configure option (Daniel Bevenius)
    nodejs#16790
  - add --use-bundled-ca --use-openssl-ca check (Daniel Bevenius)
    nodejs#12087
  - add process.ppid (cjihrig)
    nodejs#16839
* tls:
  - accept `lookup` option for `tls.connect()` (Fedor Indutny)
    nodejs#12839
* tools, build:
  - a new macOS installer! (JP Wesselink)
    nodejs#15179
* url:
  - WHATWG URL api support (James M Snell)
    nodejs#7448
* util:
  - add %i and %f formatting specifiers (Roman Reiss)
    nodejs#10308

PR-URL: nodejs#18342
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