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http2: release request()'s "connect" event listener after it runs #21916

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http2: release request()'s "connect" event listener after it runs #21916

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ide
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@ide ide commented Jul 21, 2018

The Http2Session#request() method internally listens to the "connect"
event if the session has not yet established a connection so that the
actual request can be sent after the connection has been established.

This commit removes the event listener after it runs and carries out
the request and is no longer needed. In practice this shouldn't affect
the behavior of the session object since the "connect" event fires only
once anyway, but removing the listener releases its references. The
rest of this class subscribes to the "connect" event with once
instead of on as well.

Checklist
  • make -j4 test (UNIX), or vcbuild test (Windows) passes
  • commit message follows commit guidelines

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targos commented Jul 21, 2018

/cc @nodejs/http2

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trivikr commented Jul 22, 2018

CI: https://ci.nodejs.org/job/node-test-pull-request/15972/

@trivikr trivikr added http2 Issues or PRs related to the http2 subsystem. author ready PRs that have at least one approval, no pending requests for changes, and a CI started. labels Jul 22, 2018
mcollina
mcollina approved these changes Jul 23, 2018
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LGTM, could you add a unit test for this behavior?

@ide
http2: release request()'s "connect" event listener after it runs
2e6649c 
The `Http2Session#request()` method internally listens to the "connect"
event if the session has not yet established a connection so that the
actual request can be sent after the connection has been established.

This commit removes the event listener after it runs and carries out
the request and is no longer needed. In practice this shouldn't affect
the behavior of the session object since the "connect" event fires only
once anyway, but removing the listener releases its references. The
rest of this class subscribes to the "connect" event with `once`
instead of `on` as well.

Tested by adding a new test that ensures `Http2Session#request()` is
called before the connection is established, indicated by a "connect"
listener that is run. The test also ensures all "connect" listeners are
removed after the connection is established.
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ide commented Jul 28, 2018

@mcollina Thanks for reviewing. I added a unit test that fails without this commit and passes with it.

mcollina
mcollina approved these changes Jul 29, 2018
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LGTM, good work!

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CI: https://ci.nodejs.org/job/node-test-pull-request/16054/

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targos commented Jul 29, 2018

Landed in 2aca095 🎉

@targos targos closed this Jul 29, 2018
targos pushed a commit that referenced this pull request Jul 29, 2018
@ide @targos
http2: release request()'s "connect" event listener after it runs
2aca095 
The `Http2Session#request()` method internally listens to the "connect"
event if the session has not yet established a connection so that the
actual request can be sent after the connection has been established.

This commit removes the event listener after it runs and carries out
the request and is no longer needed. In practice this shouldn't affect
the behavior of the session object since the "connect" event fires only
once anyway, but removing the listener releases its references. The
rest of this class subscribes to the "connect" event with `once`
instead of `on` as well.

Tested by adding a new test that ensures `Http2Session#request()` is
called before the connection is established, indicated by a "connect"
listener that is run. The test also ensures all "connect" listeners are
removed after the connection is established.

PR-URL: #21916
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
targos pushed a commit that referenced this pull request Jul 31, 2018
@ide @targos
http2: release request()'s "connect" event listener after it runs
337b2df 
The `Http2Session#request()` method internally listens to the "connect"
event if the session has not yet established a connection so that the
actual request can be sent after the connection has been established.

This commit removes the event listener after it runs and carries out
the request and is no longer needed. In practice this shouldn't affect
the behavior of the session object since the "connect" event fires only
once anyway, but removing the listener releases its references. The
rest of this class subscribes to the "connect" event with `once`
instead of `on` as well.

Tested by adding a new test that ensures `Http2Session#request()` is
called before the connection is established, indicated by a "connect"
listener that is run. The test also ensures all "connect" listeners are
removed after the connection is established.

PR-URL: #21916
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
@targos targos mentioned this pull request Jul 31, 2018
Merged
This was referenced Aug 1, 2018
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kjin pushed a commit to kjin/node that referenced this pull request Aug 23, 2018
@ide @kjin
http2: release request()'s "connect" event listener after it runs
5248d9d 
The `Http2Session#request()` method internally listens to the "connect"
event if the session has not yet established a connection so that the
actual request can be sent after the connection has been established.

This commit removes the event listener after it runs and carries out
the request and is no longer needed. In practice this shouldn't affect
the behavior of the session object since the "connect" event fires only
once anyway, but removing the listener releases its references. The
rest of this class subscribes to the "connect" event with `once`
instead of `on` as well.

Tested by adding a new test that ensures `Http2Session#request()` is
called before the connection is established, indicated by a "connect"
listener that is run. The test also ensures all "connect" listeners are
removed after the connection is established.

PR-URL: nodejs#21916
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
kjin pushed a commit to kjin/node that referenced this pull request Sep 25, 2018
@ide @kjin
http2: release request()'s "connect" event listener after it runs
a8907f9 
The `Http2Session#request()` method internally listens to the "connect"
event if the session has not yet established a connection so that the
actual request can be sent after the connection has been established.

This commit removes the event listener after it runs and carries out
the request and is no longer needed. In practice this shouldn't affect
the behavior of the session object since the "connect" event fires only
once anyway, but removing the listener releases its references. The
rest of this class subscribes to the "connect" event with `once`
instead of `on` as well.

Tested by adding a new test that ensures `Http2Session#request()` is
called before the connection is established, indicated by a "connect"
listener that is run. The test also ensures all "connect" listeners are
removed after the connection is established.

PR-URL: nodejs#21916
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
kjin pushed a commit to kjin/node that referenced this pull request Oct 16, 2018
@ide @kjin
http2: release request()'s "connect" event listener after it runs
aa4c19b 
The `Http2Session#request()` method internally listens to the "connect"
event if the session has not yet established a connection so that the
actual request can be sent after the connection has been established.

This commit removes the event listener after it runs and carries out
the request and is no longer needed. In practice this shouldn't affect
the behavior of the session object since the "connect" event fires only
once anyway, but removing the listener releases its references. The
rest of this class subscribes to the "connect" event with `once`
instead of `on` as well.

Tested by adding a new test that ensures `Http2Session#request()` is
called before the connection is established, indicated by a "connect"
listener that is run. The test also ensures all "connect" listeners are
removed after the connection is established.

PR-URL: nodejs#21916
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
BethGriggs pushed a commit that referenced this pull request Oct 17, 2018
@ide @BethGriggs
http2: release request()'s "connect" event listener after it runs
d602c7a 
The `Http2Session#request()` method internally listens to the "connect"
event if the session has not yet established a connection so that the
actual request can be sent after the connection has been established.

This commit removes the event listener after it runs and carries out
the request and is no longer needed. In practice this shouldn't affect
the behavior of the session object since the "connect" event fires only
once anyway, but removing the listener releases its references. The
rest of this class subscribes to the "connect" event with `once`
instead of `on` as well.

Tested by adding a new test that ensures `Http2Session#request()` is
called before the connection is established, indicated by a "connect"
listener that is run. The test also ensures all "connect" listeners are
removed after the connection is established.

Backport-PR-URL: #22850
PR-URL: #21916
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
@BethGriggs BethGriggs mentioned this pull request Oct 30, 2018
Merged
@beevelop beevelop mentioned this pull request Nov 20, 2018
Closed
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@trivikr trivikr trivikr approved these changes

@cjihrig cjihrig cjihrig approved these changes

@targos targos targos approved these changes

@antsmartian antsmartian antsmartian approved these changes

@addaleax addaleax addaleax approved these changes

@jasnell jasnell jasnell approved these changes

@mcollina mcollina mcollina approved these changes

@apapirovski apapirovski apapirovski approved these changes

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