`utility rchash` passes full overlay address as anchor instead of prefix — causes BeeResponseError / ECONNRESET

[crtahlin]

Bug Report

Command

swarm-cli utility rchash

Error

BeeResponseError: socket hang up
  method: 'get',
  url: 'rchash/9/db4de188507aaf43ba79147344ef5373743e4a7490aab2c4c0b0677b50655f1d/db4de188507aaf43ba79147344ef5373743e4a7490aab2c4c0b0677b50655f1d',
  statusText: 'ECONNRESET'

Description

The utility rchash command constructs its API call using the full 64-character overlay address for both anchor_01 and anchor_02 parameters. According to the Bee API documentation, the anchor parameters should only contain the first 4 hex digits of the overlay address (sufficient to cover the storage depth prefix bits). Bee appears to reject the oversized anchor values with a connection reset.

The correct URL for depth 9 and overlay starting with db4d should be something like:

rchash/9/db4d/db4d

Instead, the CLI is constructing:

rchash/9/db4de188507aaf43ba79147344ef5373743e4a7490aab2c4c0b0677b50655f1d/db4de188507aaf43ba79147344ef5373743e4a7490aab2c4c0b0677b50655f1d

Expected Behavior

The command should:

1. Fetch the node's overlay address from /addresses
2. Truncate it to the appropriate prefix length (first 4 hex digits / enough to cover depth bits)
3. Pass the truncated value as both anchor parameters

Environment

• swarm-cli: installed via npm -g @ethersphere/swarm-cli
• bee-js: bundled version (from error trace: @ethersphere/bee-js/dist/cjs/modules/rchash.js)
• Node.js: v24.7.0
• OS: macOS (Homebrew install)

[crtahlin]

Fix submitted in #675.

The root causes were:

1. The full 64-char overlay address was passed as the anchor parameter to the rchash API, which expects a short hex prefix (just enough bytes to cover the depth bits)
2. topology.depth (Kademlia routing depth) was used instead of committedDepth from the node status — committedDepth is the actual depth the node uses during the redistribution lottery (storageRadius + capacityDoubling)

The fix also adds an optional --depth flag to allow benchmarking at different depths, and an integration test.

[Cafe137]

Early findings show that specifying the full overlay does not cause issues directly.

root@Ubuntu-2404-noble-amd64-base ~ # swarm-cli status
Bee
API: http://localhost:1633 [OK]
Version: 2.7.1-61fab37b
Mode: full

root@Ubuntu-2404-noble-amd64-base ~ # swarm-cli utility rchash
Reserve sampling duration: 67.423807099 seconds

However, the second item that points out that topology.depth is used instead of committedDepth seems to be a valid bug.