You’ve most likely exhausted the network capacity. You need to use tools like netperf and wireshark. Start with netstat and review the outgoing queue sizes.
> On Nov 10, 2020, at 4:46 AM, Denis Telyukh <telyukh.de...@gmail.com> wrote: > > More complex problem description with images: > https://caddy.community/t/sometimes-http-2-request-hangs-up-need-help-with-debugging/10439/2 > > > вторник, 10 ноября 2020 г. в 10:25:58 UTC+7, Denis Telyukh: >> Thanks! Maybe it will help. >> >> вт, 10 нояб. 2020 г. в 01:21, seank...@gmail.com <seank...@gmail.com>: >> >>> maybe setting GODEBUG=http2debug=2 to spit out some logs? >>> >>>>> On Monday, November 9, 2020 at 5:49:57 PM UTC+1 telyuk...@gmail.com wrote: >>>>> Hello! >>>>> >>>>> I use third-party software with my own code to build reverse-proxy, which >>>>> supports http/2. Sometimes requests hang up with infinite waiting. With >>>>> Delve I found, that it happens in >>>>> https://golang.org/src/net/http/h2_bundle.go in writeHeaders or in >>>>> writeDataFromHandler. But I have no any idea why it happens. Which tools >>>>> should I use to find the reason of such behaviour? >>>>> >>>>> Denis >>>> >>> -- >>> You received this message because you are subscribed to a topic in the >>> Google Groups "golang-nuts" group. >>> To unsubscribe from this topic, visit >>> https://groups.google.com/d/topic/golang-nuts/CJwsb1H9mGg/unsubscribe. >>> To unsubscribe from this group and all its topics, send an email to >>> golang-nuts...@googlegroups.com. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/golang-nuts/94e4b5cd-6005-4a52-916f-9e1a88137399n%40googlegroups.com. > > -- > You received this message because you are subscribed to the Google Groups > "golang-nuts" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to golang-nuts+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/golang-nuts/a9ac428d-1389-4278-be9a-273ae95751b0n%40googlegroups.com. -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/439630DF-8B78-4E7B-AFD8-5BC7D9C668ED%40ix.netcom.com.
