Merge pull request #2519 from murgatroid99/grpc-js_keepalive_order_fix

grpc-js: Fix a crash when `grpc.keepalive_permit_without_calls` is set

Author: murgatroid99

packages/grpc-js/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@grpc/grpc-js",
-  "version": "1.8.19",
+  "version": "1.8.20",
   "description": "gRPC Library for Node - pure JS implementation",
   "homepage": "https://grpc.io/",
   "repository": "https://github.com/grpc/grpc-node/tree/master/packages/grpc-js",

packages/grpc-js/src/transport.ts

@@ -126,6 +126,14 @@ class Http2Transport implements Transport {
      */
     private remoteName: string | null
   ) {
+    /* Populate subchannelAddressString and channelzRef before doing anything
+     * else, because they are used in the trace methods. */
+    this.subchannelAddressString = subchannelAddressToString(subchannelAddress);
+
+    if (options['grpc.enable_channelz'] === 0) {
+      this.channelzEnabled = false;
+    }
+    this.channelzRef = registerChannelzSocket(this.subchannelAddressString, () => this.getChannelzInfo(), this.channelzEnabled);
     // Build user-agent string.
     this.userAgent = [
       options['grpc.primary_user_agent'],
@@ -147,16 +155,6 @@ class Http2Transport implements Transport {
     } else {
       this.keepaliveWithoutCalls = false;
     }
-    if (this.keepaliveWithoutCalls) {
-      this.maybeStartKeepalivePingTimer();
-    }
-
-    this.subchannelAddressString = subchannelAddressToString(subchannelAddress);
-
-    if (options['grpc.enable_channelz'] === 0) {
-      this.channelzEnabled = false;
-    }
-    this.channelzRef = registerChannelzSocket(this.subchannelAddressString, () => this.getChannelzInfo(), this.channelzEnabled);
 
     session.once('close', () => {
       this.trace('session closed');
@@ -205,6 +203,11 @@ class Http2Transport implements Transport {
         );
       });
     }
+    /* Start the keepalive timer last, because this can trigger trace logs,
+     * which should only happen after everything else is set up. */
+    if (this.keepaliveWithoutCalls) {
+      this.maybeStartKeepalivePingTimer();
+    }
   }
 
   private getChannelzInfo(): SocketInfo {