gRPC Ping call error

[dougg0k]

Hi,

I've been trying to call the rpc Ping in access-001.candidate4.nodes.onflow.org:9000, access-001.candidate5.nodes.onflow.org:9000 and access-001.candidate6.nodes.onflow.org:9000.

But it returns this error.

Error: 2 UNKNOWN: could not ping execution node: rpc error: code = Unavailable desc = connection error: desc = "transport: Error while dialing dial tcp 35.197.17.191:9000: connect: connection refused"
    at Object.callErrorFromStatus (/app/node_modules/@grpc/grpc-js/src/call.ts:81:24)
    at Object.onReceiveStatus (/app/node_modules/@grpc/grpc-js/src/client.ts:343:36)
    at Object.onReceiveStatus (/app/node_modules/@grpc/grpc-js/src/client-interceptors.ts:430:34)
    at Object.onReceiveStatus (/app/node_modules/@grpc/grpc-js/src/client-interceptors.ts:392:48)
    at /app/node_modules/@grpc/grpc-js/src/call-stream.ts:299:24
    at processTicksAndRejections (node:internal/process/task_queues:78:11) {
  code: 2,
  details: 'could not ping execution node: rpc error: code = Unavailable desc = connection error: desc = "transport: Error while dialing dial tcp 35.197.17.191:9000: connect: connection refused"',
  metadata: Metadata {
    internalRepr: Map(1) { 'content-type' => [Array] },
    options: {}
  }
}

While in all other candidate and most mainnet urls seems to be working. Was it because it wasn't implemented in those? Though it doesn't seem like it, given the error.

GetEventsForHeightRange in those endpoints is working. I need because some NFTs token were implemented from the node candidate4.

Edit: For now, this works and will do.

return new Promise((resolve, reject) => {
    client.ping({}, (err, data) => {
        if (err) {
            const isUnavailable =
                err?.code === 14 || err?.message.includes("io exception");
            if (isUnavailable) {
                reject(false);
            }
            client.getNetworkParameters({}, (err, data) => {
                if (err) {
                    reject(false);
                }
                resolve(true);
            });
        }
        resolve(true);
    });
});

Edit2: I am getting a similar error when trying to fetch event range from node candidate6.

  err: {
      "type": "Error",
      "message": "13 INTERNAL: failed to retrieve events from execution node: rpc error: code = Unavailable desc = connection error: desc = \"transport: Error while dialing dial tcp 35.197.17.191:9000: connect: connection refused\"",
      "stack":
          Error: 13 INTERNAL: failed to retrieve events from execution node: rpc error: code = Unavailable desc = connection error: desc = "transport: Error while dialing dial tcp 35.197.17.191:9000: connect: connection refused"
              at Object.callErrorFromStatus (/app/node_modules/@grpc/grpc-js/src/call.ts:81:24)
              at Object.onReceiveStatus (/app/node_modules/@grpc/grpc-js/src/client.ts:343:36)
              at Object.onReceiveStatus (/app/node_modules/@grpc/grpc-js/src/client-interceptors.ts:430:34)
              at Object.onReceiveStatus (/app/node_modules/@grpc/grpc-js/src/client-interceptors.ts:392:48)
              at /app/node_modules/@grpc/grpc-js/src/call-stream.ts:299:24
              at processTicksAndRejections (node:internal/process/task_queues:78:11)
      "code": 13,
      "details": "failed to retrieve events from execution node: rpc error: code = Unavailable desc = connection error: desc = \"transport: Error while dialing dial tcp 35.197.17.191:9000: connect: connection refused\"",
      "metadata": {
        "content-type": [
          "application/grpc"
        ]
      }
    }

Still rpc GetNetworkParameters works for them all.

[dougg0k]

I am testing with getEventsForHeightRange and candidate5 is up, but not candidate6, all the others are working.

{
  "code": 13,
  "details": "failed to retrieve events from execution node: rpc error: code = Unavailable desc = connection error: desc = \"transport: Error while dialing dial tcp 35.197.17.191:9000: connect: connection refused\"",
  "metadata": {
    "content-type": [
      "application/grpc"
    ]
  }
}