gRPC for Swift 2.4

Last reviewed Sep 19, 2026

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Prompt Details

Prompt Composition

2prompts
  1. Swift 6.3121 lines · 4.3K tokens
  2. gRPC for Swift 2.459 lines · 3.3K tokens
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Prompt Preview

Apply the Swift 6.3 baseline first. These rules cover the grpc-swift-2 2.4 line and were checked against 2.4.2. Companion-specific rules below apply to grpc-swift-nio-transport 2.9.2 and grpc-swift-protobuf 2.4.1 with SwiftProtobuf 1.38.1; these packages have independent versions.

Version and dependency boundaries

  • Build with a Swift 6.1-or-newer toolchain in Swift 6 language mode; 2.4 dropped Swift 6.0 support. Respect gRPC's deployment minimums of macOS 15, iOS/tvOS 18, watchOS 11, and visionOS 2. The tagged compatibility policy excludes Windows.
  • Resolve and review the core, HTTP/2 transport, protobuf integration, and SwiftProtobuf separately. Recheck companion-specific defaults when changing their versions; do not apply gRPC C-core channel arguments or Swift 1.x transport APIs to this implementation.
  • Check SwiftNIO, NIOHTTP2, and NIOSSL separately from gRPC wherever those packages are used: the transport's declared dependency minimums admit releases that predate published security fixes, and vulnerability scanners miss some SwiftNIO advisories. Before each release, compare the resolved versions with the fixed releases listed on each project's GitHub security advisory page and move to them with swift package update <name>, assessing each advisory against the HTTP/2, HTTP/1 conversion, WebSocket, and certificate-inspection paths the application actually enables.
  • Generate services with the v2 protoc-gen-grpc-swift-2 and reviewed schemas. For GRPCProtobufGenerator, review grpc-swift-proto-generator-config.json, nested configuration overrides, and