grpc
/
grpc-node
mirror of https://github.com/grpc/grpc-node.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

grpc-js: Fix handling of established connection drops in subchannel

This commit is contained in:
murgatroid99 2019-10-10 12:45:07 -07:00
parent 974cb30a27
commit 327eecce3c
1 changed files with 37 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
packages/grpc-js/src/subchannel.ts
View File

@ -242,30 +242,48 @@ export class Subchannel {
connectionOptions.servername = getDefaultAuthority(this.channelTarget); connectionOptions.servername = getDefaultAuthority(this.channelTarget);
} }
} }
this.session = http2.connect( const session = http2.connect(
addressScheme + this.subchannelAddress, addressScheme + this.subchannelAddress,
connectionOptions connectionOptions
); );
this.session.unref(); this.session = session;
this.session.once('connect', () => { session.unref();
/* For all of these events, check if the session at the time of the event
* is the same one currently attached to this subchannel, to ensure that
* old events from previous connection attempts cannot cause invalid state
* transitions. */
session.once('connect', () => {
if (this.session === session) {
this.transitionToState( this.transitionToState(
[ConnectivityState.CONNECTING], [ConnectivityState.CONNECTING],
ConnectivityState.READY ConnectivityState.READY
); );
}
}); });
this.session.once('close', () => { session.once('close', () => {
if (this.session === session) {
this.transitionToState( this.transitionToState(
[ConnectivityState.CONNECTING, ConnectivityState.READY], [ConnectivityState.CONNECTING],
ConnectivityState.TRANSIENT_FAILURE ConnectivityState.TRANSIENT_FAILURE
); );
/* Transitioning directly to IDLE here should be OK because we are not
* doing any backoff, because a connection was established at some
* point */
this.transitionToState(
[ConnectivityState.READY],
ConnectivityState.IDLE
);
}
}); });
this.session.once('goaway', () => { session.once('goaway', () => {
if (this.session === session) {
this.transitionToState( this.transitionToState(
[ConnectivityState.CONNECTING, ConnectivityState.READY], [ConnectivityState.CONNECTING, ConnectivityState.READY],
ConnectivityState.IDLE ConnectivityState.IDLE
); );
}
}); });
this.session.once('error', error => { session.once('error', error => {
/* Do nothing here. Any error should also trigger a close event, which is /* Do nothing here. Any error should also trigger a close event, which is
* where we want to handle that. */ * where we want to handle that. */
}); });