deal with older lastHashes and modern network

Author: neuroscr

lib/lib.js

@@ -138,6 +138,39 @@ async function jsonAsk(url, fetchOptions = {}) {
  if (json.match(/Service node is not ready:/)) {
  return
  }
+ // handle 2021 change
+ // https://github.com/oxen-io/oxen-storage-server/commit/7f148b4d6ee7f6052fbab4e6234ab3a4411fd95c
+ if (json.match(/Invalid last_hash: expected base64 \(43 chars\)/)) {
+ // just clear out last hash
+ return {
+ lastHash: ' ',
+ messages: [],
+ }
+ /*
+ const bodyData = JSON.parse(fetchOptions.body)
+ if (bodyData?.params?.lastHash?.length !== 43) {
+ // retry without
+ console.warn('lib::jsonAsk - last_hash', bodyData.params.lastHash, 'is invalid, retrying without, so we can retrieve anything', fetchOptions)
+ //const props = ['method', 'body', 'headers', 'timeout']
+ delete bodyData.params.lastHash
+ fetchOptions.body = JSON.stringify(bodyData)
+ const json2 = await textAsk(url, fetchOptions)
+ // huh this doesn't have a lastHash
+ console.log('got', json2)
+ try {
+ const obj = JSON.parse(json2)
+
+ return obj
+ } catch (e) {
+ console.error('lib::jsonAsk - err', e, 'json', json2, 'options', fetchOptions)
+ return
+ }
+ return jsonAsk(url, fetchOptions)
+ }
+ console.warn('got invalid last_hash', bodyData.params.lastHash, 'is 43...', bodyData)
+ return
+ */
+ }
  try {
  const obj = JSON.parse(json)
  return obj