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fix: Handle empty gzipped response body from proxy #54
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A
HEADmethod does not have a body. If thecontent-encodingisgzip, KBHP should NOT try to unzip the response ifBuffer.byteLengthis zero, or else we see this:Error: unexpected end of file at Zlib.zlibOnError [as onerror] (node:zlib:190:17) at Zlib.callbackTrampoline (node:internal/async_hooks:130:17) at processChunkSync (node:zlib:456:12) at zlibBufferSync (node:zlib:178:12) at Object.syncBufferWrapper [as gunzipSync] (node:zlib:791:14) at /Users/redacted/Code/contrib/koa-better-http-proxy/app/steps/decorateUserRes.js:13:46 at decorateProxyResBody (/Users/redacted/Code/contrib/koa-better-http-proxy/app/steps/decorateUserRes.js:45:22) at processTicksAndRejections (node:internal/process/task_queues:96:5)