cmd/go: go build or go mod vendor need do retries when trying to download modules

[volvofixthis]

What version of Go are you using (go version)?

go version go1.16.4 linux/amd64

Does this issue reproduce with the latest release?

Yes

What operating system and processor architecture are you using (go env)?

go env Output

GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/root/.cache/go-build"
GOENV="/root/.config/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/go/pkg/mod"
GONOPROXY="bitbucket.rbc.ru/pro/*,bitbucket.rbc.ru/go/*"
GONOSUMDB="bitbucket.rbc.ru/pro/*,bitbucket.rbc.ru/go/*"
GOOS="linux"
GOPATH="/go"
GOPRIVATE="bitbucket.rbc.ru/pro/*,bitbucket.rbc.ru/go/*"
GOPROXY="https://web-registry.k8s.public.ru/repository/goproxy/"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org https://athens.infra.rbc.ru/sumdb/sum.golang.org/"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.16"
GCCGO="/usr/bin/gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/app/billing-sp/go.mod"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build3813495580=/tmp/go-build -gno-record-gcc-switches"

What did you do?

Tried to run go build

What did you expect to see?

All dependencies are downloaded successfully, executable is built.

What did you see instead?

Sometimes there are errors like:

1. http2: server sent GOAWAY and closed the connection; LastStreamID=1999, ErrCode=NO_ERROR
2. unexpected EOF

Can we do some retries when such thing happens? It becomes almost impossible to build application when one of repositories is not stable or in case of our goproxy have wrong settings. We solved problem on our side by increasing http2_max_requests for web server of our nexus from 1000(default) to 10000.

[dmitshur]

Thanks for the report. I believe this is a duplicate of #28194.

CC @bcmills, @jayconrod, @matloob.