HTTP HTTP GET HTTP replaced headers CURLOPT_TIMECONDITION If-Modified-Since # Server-side HTTP/1.1 429 Too Many Requests Date: Thu, 11 Jul 2019 02:26:59 GMT Server: test-server/swsclose Retry-After: Thu, 11 Jul 2024 02:26:59 GMT # Client-side http HTTP Retry-After header parsing using a date lib%TESTNUMBER http://%HOSTIP:%HTTPPORT/%TESTNUMBER GET /%TESTNUMBER HTTP/1.1 Host: %HOSTIP:%HTTPPORT Accept: */* Retry-After 172066