{"record":{"id":"a6670d61c30f5080","repo":"diegosouzapw/OmniRoute","slug":"kimi-connect-frame-used-unsupported-flags-flags","errorCode":null,"errorMessage":"Kimi Connect frame used unsupported flags: ${flags}","messagePattern":"Kimi Connect frame used unsupported flags: (.+?)","errorType":"exception","errorClass":"Error","httpStatus":502,"severity":"error","filePath":"open-sse/executors/kimi-web.ts","lineNumber":121,"sourceCode":" *   - `consumed: N` + the parsed frame otherwise\n */\nexport function decodeConnectFrame(\n  buf: Uint8Array,\n  byteOffset: number\n): { consumed: number; frame: ConnectFrame | null } {\n  if (byteOffset + 5 > buf.length) return { consumed: 0, frame: null };\n  const flags = buf[byteOffset];\n  const len =\n    (buf[byteOffset + 1] << 24) |\n    (buf[byteOffset + 2] << 16) |\n    (buf[byteOffset + 3] << 8) |\n    buf[byteOffset + 4];\n  // Sign-extend the high bit back to negative when len was read as signed.\n  const msgLen = len < 0 ? len + 0x100000000 : len;\n  if (msgLen > MAX_FRAME_LEN) return { consumed: -1, frame: null };\n  if (byteOffset + 5 + msgLen > buf.length) return { consumed: 0, frame: null };\n  if ((flags & ~0x03) !== 0) {\n    throw new Error(`Kimi Connect frame used unsupported flags: ${flags}`);\n  }\n  if ((flags & 0x01) !== 0) {\n    throw new Error(\"Kimi Connect compressed frames are not supported\");\n  }\n\n  const payload = buf.subarray(byteOffset + 5, byteOffset + 5 + msgLen);\n  let message: Record<string, unknown> | null = null;\n  if (msgLen > 0) {\n    try {\n      message = JSON.parse(new TextDecoder().decode(payload));\n    } catch (error) {\n      throw new Error(\n        `Kimi Connect frame contained invalid JSON: ${error instanceof Error ? error.message : \"parse failed\"}`\n      );\n    }\n  }\n  return { consumed: 5 + msgLen, frame: { flags, message } };\n}","sourceCodeStart":103,"sourceCodeEnd":139,"githubUrl":"https://github.com/diegosouzapw/OmniRoute/blob/a179ffed5bb2e0b883b9ae7214ce8717b2a94c4d/open-sse/executors/kimi-web.ts#L103-L139","documentation":"Error \"Kimi Connect frame used unsupported flags: ${flags}\" thrown in diegosouzapw/OmniRoute.","triggerScenarios":"Thrown at open-sse/executors/kimi-web.ts:121 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"a179ffed5bb2e0b883b9ae7214ce8717b2a94c4d","analyzedAt":"2026-08-25T18:35:09.898Z","schemaVersion":2},"datasetVersion":"2026-08-25T21:54:21.419Z"}