grpc protocol_error ai_generated true

INTERNAL: grpc: 收到大小为 16777216 的 HTTP/2 帧，超过配置的最大值 16384

INTERNAL: grpc: received HTTP/2 frame with size 16777216, which exceeds the configured maximum 16384

ID: grpc/http2-max-frame-size-exceeded

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85%修复率
88%置信度
1证据数
2024-03-15首次发现

版本兼容性

版本状态引入弃用备注
gRPC C++ 1.62.0 active — — —
gRPC Go 1.64.0 active — — —
Envoy 1.30.0 active — — —

根因分析

gRPC 服务器或客户端配置的 HTTP/2 最大帧大小小于对端发送的大小，导致协议违规。

English

The gRPC server or client configured a smaller HTTP/2 max frame size than the peer is sending, causing a protocol violation.

generic

官方文档

https://grpc.io/docs/guides/performance/#http2-settings

解决方案

  1. 将客户端和服务端的 `GRPC_ARG_HTTP2_MAX_FRAME_SIZE` 设置为更大的值（如 65536）：`export GRPC_ARG_HTTP2_MAX_FRAME_SIZE=65536`
  2. 在 gRPC-Web 或 Envoy 的 HTTP 连接管理器中配置 `max_frame_size`：`http_filters: [name: envoy.filters.http.grpc_web]` 然后设置 `max_request_size_kb: 65536`

无效尝试

常见但无效的做法:

  1. Increase max frame size on client only to a very high value like 64MB 60% 失败

    The server may have its own limit; mismatch persists and can cause memory issues.

  2. Disable HTTP/2 frame size checks entirely via environment variable 80% 失败

    Not a standard gRPC option; may lead to silent data corruption.

  3. Restart both services without any config change hoping it's transient 90% 失败

    The misconfiguration persists across restarts.