get_unspent_outs REST error: Incorrect HTTP verb provided from

[mahnunchik]

get_unspent_outs method produces REST error: Incorrect HTTP verb provided from ...

[vtnerd]

What is the client? What branch/version?

[mahnunchik]

/get_version

{
  server_type: "monero-lws",
  server_version: "1.0-alpha",
  last_git_commit_hash: "9804ebcb0b147f901036d8b996eb5be0d6ed0967",
  last_git_commit_date: "2026/05/04 10:00:23",
  git_branch_name: "master",
  monero_version_full: "0.18.1.0-b9998fc9e",
  blockchain_height: 3674012,
  api: 65543,
  max_subaddresses: 0,
  network_type: "main",
  testnet: false
}

Client is build in js fetch:

async function post(url, body) {
  const res = await fetch(url, { method: "POST", body: JSON.stringify(body) });
  if (!res.ok) throw new Error(`${res.status} ${res.statusText}: ${await res.text()}`);
  return res.json();
}

console.log(primaryAddress);

const login = await post("https://lws.example.com/login", {
  address: primaryAddress,
  view_key: viewKey,
  create_account: true,
  generated_locally: false,
});
console.log("login", login);

const info = await post("https://lws.example.com/get_address_info", {
  address: primaryAddress,
  view_key: viewKey,
});
console.log("get_address_info", info);

const unspent = await post("https://lws.example.com/get_unspent_outs", {
  address: primaryAddress,
  view_key: viewKey,
  amount: 0,
});
console.log("get_unspent_outs", unspent);

47cjJf4XbU1jj1izcnRJBoW94HxfSG5Ppho6ZXzFidHHJBVh8vXSTedbb17PuY6HZGLGqwcXbX2cJ8WcW3bTW4osBvukKkN
login {
  new_address: false,
  generated_locally: true,
  lookahead: { maj_i: 0, min_i: 0 }
}
get_address_info {
  locked_funds: '0',
  total_received: '0',
  total_sent: '0',
  scanned_height: 3674014,
  scanned_block_height: 3674014,
  start_height: 0,
  transaction_height: 3674014,
  blockchain_height: 3674014
}
Error: 500 Internal Server Error: ""

[mahnunchik]

The same result for addresses with UTXOs

[mahnunchik]

I do not understand how the same POST request causes a 500 error and the server log Incorrect HTTP verb provided

[vtnerd]

The response should be 405 "method not allowed' if "Incorrect HTTP verb provided" is in the logs. Basically I need logs with --log-level 4 to even know what's happening here.

[mahnunchik]

2026-05-15 14:50:47.922 D Reading new REST request from 0x60d69ae48e50
2026-05-15 14:50:47.922 D Received HTTP request from 0x60d69ae48e50 to target /get_unspent_outs
2026-05-15 14:50:47.922 D Running REST handler /get_unspent_outs on 0x60d69ae48e50
2026-05-15 14:50:47.922 I REST error: Incorrect HTTP verb provided from 10.1.130.27:51366 / 0x60d69ae48e50
2026-05-15 14:50:47.922 D Sending HTTP status 405 to 0x60d69ae48e50
2026-05-15 14:50:47.922 D Reading new REST request from 0x60d69ae48e50
2026-05-15 14:50:52.922 W Timeout on REST connection to 10.1.130.27:51366 / 0x60d69ae48e50
2026-05-15 14:50:52.922 D Shutting down REST socket to 0x60d69ae48e50
2026-05-15 14:50:52.922 D Shutting down REST socket to 0x60d69ae48e50
2026-05-15 14:50:52.922 D Destroying connection 0x60d69ae48e50

[vtnerd]

The code that handle this is fairly basic, so I'm not sure how this would happen, especially the "500 error" being reported on the JS side.

A couple of things:

• Could you provide a log of the earlier requests?
• Are you able to Wireshark this, or provide some details from a browser web inspection tool? It seems like CORS (or similar) is messing with things somehow, but it's not clear how the other endpoints would be successful.

[mahnunchik]

lws-1  | 2026-05-27 17:46:28.906	D Reading new REST request from 0xffffa4009b50
lws-1  | 2026-05-27 17:46:28.907	D Received HTTP request from 0xffffa40019e0 to target /get_unspent_outs
lws-1  | 2026-05-27 17:46:28.907	D Running REST handler /get_unspent_outs on 0xffffa40019e0
lws-1  | 2026-05-27 17:46:28.907	D Starting new ZMQ request in /get_unspent_outs
lws-1  | 2026-05-27 17:46:28.907	D REST response to 0xffffa40019e0 is being generated async
lws-1  | 2026-05-27 17:46:28.909	E Failed to parse json response: Key "fees" missing from object. called from (unknown source location)
lws-1  | 2026-05-27 17:46:28.909	D Completed ZMQ request in /get_unspent_outs
lws-1  | 2026-05-27 17:46:28.909	I REST error: Response from monerod daemon was bad/unexpected from 192.168.65.1:41235 / 0xffffa40019e0
lws-1  | 2026-05-27 17:46:28.909	D Sending HTTP status 500 to 0xffffa40019e0

[vtnerd]

The monerod in use by monero-lws isn't sending fees in RPC get_dynamic_fee_estimate. The most likely scenario is that monerod needs updating to a version released within the last 11 months. Both master and release-v0.18 branches of monerod should work.

[vtnerd]

I could implement a work-around, but the situation is somewhat dire for lwsf without that field.

[mahnunchik]

It is better to explicitly specify the minimum supported Monero version in the documentation