Rpc-server get halted when run on GCP Cloud run

[ausias-armesto]

As part of the development of the new latency monitor some few changes need to be done on the rpc server

• Investigate the error:

2023-11-21T23:01:58.406Z rpch:sdk:error error sending segment segment[rId: a2d1e6ee-be39-4dba-91ad-4b67f0d8468d, nr: 0, total: 3] TypeError: fetch failed
    at Object.fetch (node:internal/deps/undici/undici:11372:11) {
  cause: _SocketError: other side closed
      at Socket.onSocketEnd (node:internal/deps/undici/undici:7998:26)
      at Socket.emit (node:events:529:35)
      at endReadableNT (node:internal/streams/readable:1368:12)
      at process.processTicksAndRejections (node:internal/process/task_queues:82:21) {
    code: 'UND_ERR_SOCKET',
    socket: {
      localAddress: '169.254.8.1',
      localPort: 37162,
      remoteAddress: undefined,
      remotePort: undefined,
      remoteFamily: undefined,
      timeout: undefined,
      bytesWritten: 2606,
      bytesRead: 1543
      }
    }
  }
...
2023-11-21T22:59:32.439Z rpch:sdk:nodes-collector:verbose segmentFailed segment[rId: ce0ae86c-5227-46fd-be4d-af06191f785c, nr: 0, total: 3] .uZ2U[ping: 503ms, seg: 24(702ms)/28+2, msgs: 35(1445ms)/36, 2x: .RjnT[8(4034ms)/8+1], .hndt[1(4264ms)/1]]
2023-11-21T22:59:32.440Z rpch:sdk:nodes-collector:verbose requestFailed req[ce0ae86c-5227-46fd-be4d-af06191f785c,.uZ2U>.RjnT,https://gnosis-provider.rpch.tech] .uZ2U[ping: 503ms, seg: 24(702ms)/28+2, msgs: 35(1445ms)/36, 2x: .RjnT[8(4034ms)/9], .hndt[1(4264ms)/1]]
2023-11-21T22:59:32.539Z rpch:sdk:nodes-collector:verbose found fallback route pair .7M3R > .95K9 (via best message retrieval latency)
2023-11-21T22:59:36.048Z rpch:sdk:nodes-collector:verbose requestStarted req[deac2fdd-0d7d-4485-9544-4182f169db4b,.7M3R>.95K9,https://gnosis-provider.rpch.tech] .7M3R[ping: 311ms, seg: 0, msgs: 2(38ms)/2, 1x: .95K9[0+1]]
2023-11-21T22:59:36.048Z rpch:sdk resending request NaN for original ce0ae86c-5227-46fd-be4d-af06191f785c

Which is halting the server and not recovering
https://console.cloud.google.com/run/detail/europe-west3/latency-monitor/logs?project=rpch-375921
At 2023-11-21 23:59:32.439 CET

• Create a /health GET http endpoint where an external service can check for the rpch-server health based on a 200 response.

[esterlus]

Does GCP block the HTTP connection to the nodes because they are not HTTPS??

[ausias-armesto]

Does GCP block the HTTP connection to the nodes because they are not HTTPS??

No. When the latency-monitor starts it works, but after some requests then it fails and crashes without restarting.