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2026-07-29 16:01
gRPC

Client Streaming

StreamRequestValidateMedium
Try Interactive Demo

Description

Send multiple products to create in bulk (client → server streaming).

Test Scenario

// grpcurl client streaming (requires file with JSON lines)
echo '{"name": "Product 1", "price": 10.99}
{"name": "Product 2", "price": 20.99}
{"name": "Product 3", "price": 30.99}' | \
grpcurl -plaintext -d @ \
  localhost:50051 \
  practice.products.ProductService/BulkCreateProducts

// Single response after all products sent:
{
  "created": 3,
  "failed": 0,
  "productIds": ["prod-1", "prod-2", "prod-3"]
}

Testing Tips

  • •Client sends multiple requests
  • •Server responds once after all received
  • •Good for uploads, batch operations
// Playwright API Testing - gRPC (via REST gateway)
import { test, expect } from '@playwright/test';


test('gRPC unary call via gateway', async ({ request }) => {
  const response = await request.post('/api/grpc/UserService/GetUser', {
    data: { id: '1' }
  });


  expect(response.ok()).toBeTruthy();
  const data = await response.json();
  expect(data.user).toBeDefined();
});

Challenge ID: grpc-client-streaming

2 frameworks available