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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Event on client disconnect/abort in a streaming response","articleBody":"Im wondering if its possible to get any event emitted when a client aborts or disconnects during a streaming response with `awslambda.streamifyResponse`. I tried with this code, but from my testing it looks like theres no event emitted on the Lambda when that happens:\n```ts\nexports.handler = awslambda.streamifyResponse(\n    async (event, responseStream, context) =\u003e {\n        responseStream.setContentType('text/event-stream')\n        responseStream.on(\"close\", ()=\u003e {\n          // this never gets emitted at any point\n          console.log(\"responseStream closed\");\n        });\n        for (let i = 0; i \u003c 20; i++) {\n            await sleep(1000);\n            responseStream.write(`event: ping\\n`);\n            responseStream.write(`data: ${i}\\n\\n`);\n        }\n        responseStream.end();\n    }\n);\n```\n\nThis would be an awesome feature to add in the age of SSR streaming, LLM's and more.","author":{"url":"https://github.com/sommeeeer","@type":"Person","name":"sommeeeer"},"datePublished":"2025-08-11T08:58:40.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/145/aws-lambda-nodejs-runtime-interface-client/issues/145"}