Web3 issue reproduction

Web3js: v4.4

issue: web3/web3.js#6900

If server closes connection after confirming tx sent, it'll crash the process

Using nix shell

All requirements are provided via nix shell if available, simply run

node index.js

Without nix shell

Install the following:

node: v18.18.2

yarn: 1.22.19

then run the application

node index.js

Result

> node index.js
Signed message with hash: [0x2c01432606c9ed429b56af5c30ea4e7a02ccd25e8ed400296d58000f6f89649e]
Request body {"jsonrpc":"2.0","id":"bcb6d701-72f0-4203-9c3d-c47dd9a1137a","method":"eth_blockNumber","params":[]}
Request body {"jsonrpc":"2.0","id":"e15481b7-ac80-43be-b5ab-504ae41d2a80","method":"eth_sendRawTransaction","params":["0xf87780843b9aca0082c35094ec7ff5c8eb40b76ab772ab2d91694863788afb708094000000000000000000000000000000000000000025a042f57744dde302cef08c526a90a200797593b843a15a6bf832099082f77a62fea01002a557906a8b43f1abb3d6600d1e629f714eacbeac829cd0d8db50c59154e0"]}
Transction was sent

/home/USER/dev/reproduce/web3-unhandled-send-tx/node_modules/node-fetch/lib/index.js:1501
                        reject(new FetchError(`request to ${request.url} failed, reason: ${err.message}`, 'system', err));
                               ^
FetchError: request to http://localhost:36448/ failed, reason: connect ECONNREFUSED 127.0.0.1:36448
    at ClientRequest.<anonymous> (/home/USER/dev/reproduce/web3-unhandled-send-tx/node_modules/node-fetch/lib/index.js:1501:11)
    at ClientRequest.emit (node:events:517:28)
    at Socket.socketErrorListener (node:_http_client:501:9)
    at Socket.emit (node:events:517:28)
    at emitErrorNT (node:internal/streams/destroy:151:8)
    at emitErrorCloseNT (node:internal/streams/destroy:116:3)
    at process.processTicksAndRejections (node:internal/process/task_queues:82:21) {
  type: 'system',
  errno: 'ECONNREFUSED',
  code: 'ECONNREFUSED'
}

The application returns with non 0 exit code even though all promises in index.js are caught. This means there's an unhandled exception deep within web3