neiro21 / grpcpp-bidi-streaming

gRPC C++ bidirectional streaming example

grpcpp-bidi-streaming

This is a gRPC C++ bidirectional streaming example: a simple file server.

Features

• two-way asynchronous communication
• block data transfer
• multiple processing threads (the number of threads is currently hard-coded)
• safe memory management
• managed file locking
• pending request cancellation

Protocol

See schema

Requirements

• A C++ compiler with C++14 support
• Protobuf
• gRPC (needs to be built from source)

How to build

At the moment only cmake is supported.

Typical out-of-source build command sequence:

mkdir build
cd build
cmake ..
make

How to run

Server app:

./FileExchangeServer [<file> ...]

Files provided on the command line are managed by the server i.e. are available for download.

Client app:

./FileExchangeClient download|upload <file>

grpcpp-bidi-streaming's Issues

Pending requests are not cancelled when server is stopped

Write locks are not released properly

Files are sometimes left locked for writing after corresponding upload requests are completed.
Reproduced: after 2-3 consecutive upload requests with the same file name.

Improve memory management

TBA

Build error

cmake ..
-- Could NOT find absl (missing: absl_DIR)
CMake Error at /lib/cmake/grpc/gRPCConfig.cmake:15 (include):
include could not find load file:

/lib/cmake/grpc/gRPCTargets.cmake

Call Stack (most recent call first):
CMakeLists.txt:18 (find_package)

-- Found gRPC++: 1.42.0
-- Configuring incomplete, errors occurred!