1b4de2b420
Safari/WebKit dropped the AI chat answer stream mid-turn ("Load failed",
shown as "Lost connection to the server") while Chrome/Firefox were fine.
Two Safari-specific causes: (1) during model think/tool gaps the UI-message
SSE stream emits no bytes and WebKit aborts a non-progressing fetch far more
aggressively than Chrome; (2) the AI SDK sets a hop-by-hop `Connection:
keep-alive` header which is illegal on HTTP/2 — Chrome/Firefox ignore it,
Safari rejects the whole response. Earlier commits only improved the error
text, never the drop itself.
Add apps/server/src/core/ai-chat/sse-resilience.ts with two helpers wired into
both stream paths (authenticated + public share):
- startSseHeartbeat: writes a `: ping` SSE comment every 15s (ignored by the
client's EventSourceParserStream) so bytes keep flowing; unref'd timer,
guarded writes, auto-clear on finish/close.
- stripStreamingHopByHopHeaders: wraps writeHead once to drop Connection/
Keep-Alive before the head is sent, so they can never leak into an HTTP/2
response.
Add sse-resilience.spec.ts (7 tests). tsc + eslint clean.
A progressive Node.js framework for building efficient and scalable server-side applications.
Description
Nest framework TypeScript starter repository.
Installation
$ npm install
Running the app
# development
$ npm run start
# watch mode
$ npm run start:dev
# production mode
$ npm run start:prod
Migrations
# This creates a new empty migration file named 'init'
$ npm run migration:create --name=init
# Generates 'init' migration file from existing entities to update the database schema
$ npm run migration:generate --name=init
# Runs all pending migrations to update the database schema
$ npm run migration:run
# Reverts the last executed migration
$ npm run migration:revert
# Reverts all migrations
$ npm run migration:revert
# Shows the list of executed and pending migrations
$ npm run migration:show
## Test
```bash
# unit tests
$ npm run test
# e2e tests
$ npm run test:e2e
# test coverage
$ npm run test:cov
Support
Nest is an MIT-licensed open source project. It can grow thanks to the sponsors and support by the amazing backers. If you'd like to join them, please read more here.
Stay in touch
- Author - Kamil Myśliwiec
- Website - https://nestjs.com
- Twitter - @nestframework
License
Nest is MIT licensed.