The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
19 lines
1.2 KiB
19 lines
1.2 KiB
# gRPC Server Backward Compatibility Issues and Workarounds Management |
|
|
|
## Introduction |
|
This document lists the workarounds implemented on gRPC servers for record and reference when users need to enable a certain workaround. |
|
|
|
## Workaround List |
|
|
|
### Cronet Compression |
|
|
|
**Workaround ID:** WORKAROUND\_ID\_CRONET\_COMPRESSION |
|
|
|
**Date added:** May 06, 2017 |
|
|
|
**Status:** Implemented in C core and C++ |
|
|
|
**Issue:** Before version v1.3.0-dev, gRPC iOS client's Cronet transport did not implement compression. However the clients still claim to support compression. As a result, a client fails to parse received message when the message is compressed. |
|
The problem above was resolved in gRPC v1.3.0-dev. For backward compatibility, a server must forcingly disable compression for gRPC clients of version lower than or equal to v1.3.0-dev. |
|
|
|
**Workaround Description:** Implemented as a server channel filter in C core. The filter identifies the version of peer client with incoming `user-agent` header of each call. If the client's gRPC version is lower that or equal to v1.3.x, a flag GRPC_WRITE_NO_COMPRESS is marked for all send_message ops which prevents compression of the messages to be sent out.
|
|
|