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Avoid repeated initialization

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maskpp 2023-09-25 23:40:20 +08:00
parent 82ec555d70
commit 999c1a21ac
1 changed files with 5 additions and 6 deletions
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11
node/rpcstack.go
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@ -475,19 +475,18 @@ type gzipResponseWriter struct {
resp http.ResponseWriter
gz *gzip.Writer
contentLength uint64 // total length of the uncompressed response
written uint64 // amount of written bytes from the uncompressed response
hasLength bool // true if uncompressed response had Content-Length
inited bool // true after init was called for the first time
contentLength uint64 // total length of the uncompressed response
written uint64 // amount of written bytes from the uncompressed response
hasLength bool // true if uncompressed response had Content-Length
inited atomic.Bool // true after init was called for the first time
}
// init runs just before response headers are written. Among other things, this function
// also decides whether compression will be applied at all.
func (w *gzipResponseWriter) init() {
if w.inited {
if w.inited.CompareAndSwap(false, true) {
return
}
w.inited = true
hdr := w.resp.Header()
length := hdr.Get("content-length")