Merge pull request #1036 from murgatroid99/grpc-js_revert_tcp_close_l…

…istener

Revert "Add specific call error for TCP disconnection"

packages/grpc-js/src/call-stream.ts

@@ -342,18 +342,6 @@ export class Http2CallStream extends Duplex implements Call {
          * from bubbling up. However, errors here should all correspond to
          * "close" events, where we will handle the error more granularly */
       });
-      /* If the underlying TLS or TCP connection closes, we want to end the
-       * call with an UNAVAILABLE status to match the behavior of the other
-       * library. In this handler we don't wait for trailers before ending the
-       * call. This should ensure that this endCall happens sooner than the one
-       * in the stream.on('close', ...) handler. */
-      stream.session.socket.on('close', () => {
-        this.endCall({
-          code: Status.UNAVAILABLE,
-          details: 'Connection dropped',
-          metadata: new Metadata(),
-        });
-      });
       if (!this.pendingRead) {
         stream.pause();
       }