3 commits

Author	SHA1	Message	Date
Nikolay	08cbbf8134	lib/promscrape: fixes proxy autorization (#6783) ... * Adds custom dial func for HTTP-Connect and socks5 proxy tunnels. Standard golang http.transport exposes GetProxyConnectHeader function, but it doesn't allow to use separate tls config for proxy. It also not possible to enforce HTTP-Connect with standard http lib. * For http scrape targets, by default http.Transport.Proxy function must be used. Since it has special case with full uri forward. * Adds proxy.URL json methods that allow to properly copy internal fields, like User/Password. It should fix bug with proxy_url. When credentials specified at URL was ignored. * Adds tests for scrape client proxy requests related issue https://github.com/VictoriaMetrics/VictoriaMetrics/issues/6771	2024-08-19 22:50:39 +02:00
Aliaksandr Valialkin	09c388a8e4	lib/promscrape: use the standard net/http.Client instead of fasthttp.Client for scraping targets in non-streaming mode ... While fasthttp.Client uses less CPU and RAM when scraping targets with small responses (up to 10K metrics), it doesn't work well when scraping targets with big responses such as kube-state-metrics. In this case it could use big amounts of additional memory comparing to net/http.Client, since fasthttp.Client reads the full response in memory and then tries re-using the large buffer for further scrapes. Additionally, fasthttp.Client-based scraping had various issues with proxying, redirects and scrape timeouts like the following ones: - https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1945 - https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5425 - https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2794 - https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1017 This should help reducing memory usage for the case when target returns big response and this response is scraped by fasthttp.Client at first before switching to stream parsing mode for subsequent scrapes. Now the switch to stream parsing mode is performed on the first scrape after reading the response body in memory and noticing that its size exceeds the value passed to -promscrape.minResponseSizeForStreamParse command-line flag. Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5567 Overrides https://github.com/VictoriaMetrics/VictoriaMetrics/pull/4931	2024-01-30 18:39:55 +02:00
Nikolay	d0b664454b	adds socks5 support for fasthttp client (#1178) ... https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1177 Co-authored-by: Aliaksandr Valialkin <valyala@gmail.com>	2021-04-04 01:43:59 +03:00