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http: improve response header handling, save cpu cycles

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Saving some cpu cycles in http response header processing:
- pass the length of the header line along
- use string constant sizeof() instead of strlen()
- check line length if prefix is possible
- switch on first header char to limit checks

Closes #13143
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Stefan Eissing 2024-03-18 12:46:43 +01:00 • committed by Daniel Stenberg
parent 6bd4ca0ef6
commit 522ea5420f
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5 changed files with 394 additions and 334 deletions
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2
lib/c-hyper.c
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@ -171,7 +171,7 @@ static int hyper_each_header(void *userdata,
len = Curl_dyn_len(&data->state.headerb);
headp = Curl_dyn_ptr(&data->state.headerb);
result = Curl_http_header(data, data->conn, headp);
result = Curl_http_header(data, data->conn, headp, len);
if(result) {
data->state.hresult = result;
return HYPER_ITER_BREAK;