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C# Academy · Lesson

Client & Bidirectional Streaming

Build client streaming and full-duplex bidirectional streaming channels for high-throughput scenarios.

Client Streaming & Bidirectional Streaming

Beyond unary and server streaming, gRPC supports client streaming (client sends many, server responds once) and bidirectional streaming (both sides send multiple messages simultaneously over one connection).

Client Streaming: Proto Definition

Add the stream keyword before the request type. The client sends a sequence of messages, and when done, the server returns a single response.

service UploadService {
  // Client streams chunks, server returns a summary
  rpc UploadFile (stream FileChunk) returns (UploadSummary);
}

message FileChunk   { bytes data = 1; string filename = 2; }
message UploadSummary { int64 bytes_received = 1; string checksum = 2; }

All lessons in this course

  1. gRPC & Protobuf Fundamentals
  2. Unary & Server Streaming RPCs
  3. Client & Bidirectional Streaming
  4. Deadlines, Cancellation & Interceptors
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