go version go1.14.4 windows/amd64

vscode install golang tools failed，try install by myself

go get -u -v github.com/stamblerre/gocode
    go get -u -v golang.org/x/tools/cmd/guru
    go get -u -v github.com/josharian/impl
    go get -u -v github.com/davidrjenni/reftools/cmd/fillstruct
    go get -u -v github.com/haya14busa/goplay/cmd/goplay
    go get -u -v github.com/godoctor/godoctor
    go get -u -v github.com/go-delve/delve/cmd/dlv
    go get -u -v github.com/stamblerre/gocode
    go get -u -v golang.org/x/tools/cmd/goimports

unrecognized import path "golang.org/x/mod/semver": https fetch: Get "https://golang.org/x/mod/semver?go-get=1": dial tcp 216.239.37.1:443: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.

guru: failed to install [object Object]: Error: Command failed: C:\Go\bin\go.exe get -v golang.org/x/tools/cmd/guru
go get golang.org/x/tools/cmd/guru: module golang.org/x/tools/cmd/guru: Get "https://proxy.golang.org/golang.org/x/tools/cmd/guru/@v/list": dial tcp 34.64.4.113:443: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
undefined
gotests: failed to install [object Object]: Error: Command failed: C:\Go\bin\go.exe get -v github.com/cweill/gotests/...
go get github.com/cweill/gotests/...: module github.com/cweill/gotests: Get "https://proxy.golang.org/github.com/cweill/gotests/@v/list": dial tcp 34.64.4.113:443: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
undefined
impl: failed to install [object Object]: Error: Command failed: C:\Go\bin\go.exe get -v github.com/josharian/impl
go get github.com/josharian/impl: module github.com/josharian/impl: Get "https://proxy.golang.org/github.com/josharian/impl/@v/list": dial tcp 34.64.4.113:443: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
undefined
fillstruct: failed to install [object Object]: Error: Command failed: C:\Go\bin\go.exe get -v github.com/davidrjenni/reftools/cmd/fillstruct
go get github.com/davidrjenni/reftools/cmd/fillstruct: module github.com/davidrjenni/reftools/cmd/fillstruct: Get "https://proxy.golang.org/github.com/davidrjenni/reftools/cmd/fillstruct/@v/list": dial tcp 34.64.4.113:443: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
undefined
goplay: failed to install [object Object]: Error: Command failed: C:\Go\bin\go.exe get -v github.com/haya14busa/goplay/cmd/goplay
go get github.com/haya14busa/goplay/cmd/goplay: module github.com/haya14busa/goplay/cmd/goplay: Get "https://proxy.golang.org/github.com/haya14busa/goplay/cmd/goplay/@v/list": dial tcp 34.64.4.113:443: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
undefined
godoctor: failed to install [object Object]: Error: Command failed: C:\Go\bin\go.exe get -v github.com/godoctor/godoctor
go get github.com/godoctor/godoctor: module github.com/godoctor/godoctor: Get "https://proxy.golang.org/github.com/godoctor/godoctor/@v/list": dial tcp 34.64.4.113:443: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
undefined
dlv: failed to install [object Object]: Error: Command failed: C:\Go\bin\go.exe get -v github.com/go-delve/delve/cmd/dlv
go get github.com/go-delve/delve/cmd/dlv: module github.com/go-delve/delve/cmd/dlv: Get "https://proxy.golang.org/github.com/go-delve/delve/cmd/dlv/@v/list": dial tcp 34.64.4.113:443: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
undefined
gocode-gomod: failed to install [object Object]: Error: Command failed: C:\Go\bin\go.exe get -v -d github.com/stamblerre/gocode
go get github.com/stamblerre/gocode: module github.com/stamblerre/gocode: Get "https://proxy.golang.org/github.com/stamblerre/gocode/@v/list": dial tcp 34.64.4.113:443: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
undefined
goimports: failed to install [object Object]: Error: Command failed: C:\Go\bin\go.exe get -v golang.org/x/tools/cmd/goimports
go get golang.org/x/tools/cmd/goimports: module golang.org/x/tools/cmd/goimports: Get "https://proxy.golang.org/golang.org/x/tools/cmd/goimports/@v/list": dial tcp 34.64.4.113:443: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
undefined
Installing github.com/cweill/gotests/... FAILED
Installing github.com/josharian/impl FAILED
Installing github.com/davidrjenni/reftools/cmd/fillstruct FAILED
Installing github.com/haya14busa/goplay/cmd/goplay FAILED
Installing github.com/godoctor/godoctor FAILED
Installing github.com/go-delve/delve/cmd/dlv FAILED
Installing github.com/stamblerre/gocode FAILED
Installing golang.org/x/tools/cmd/goimports FAILED

9 tools failed to install.

guru: failed to install [object Object]: Error: Command failed: C:\Go\bin\go.exe get -v golang.org/x/tools/cmd/guru
go get golang.org/x/tools/cmd/guru: module golang.org/x/tools/cmd/guru: Get "https://proxy.golang.org/golang.org/x/tools/cmd/guru/@v/list": dial tcp 34.64.4.113:443: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
undefined

gotests: failed to install [object Object]: Error: Command failed: C:\Go\bin\go.exe get -v github.com/cweill/gotests/...
go get github.com/cweill/gotests/...: module github.com/cweill/gotests: Get "https://proxy.golang.org/github.com/cweill/gotests/@v/list": dial tcp 34.64.4.113:443: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
undefined

impl: failed to install [object Object]: Error: Command failed: C:\Go\bin\go.exe get -v github.com/josharian/impl
go get github.com/josharian/impl: module github.com/josharian/impl: Get "https://proxy.golang.org/github.com/josharian/impl/@v/list": dial tcp 34.64.4.113:443: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
undefined

fillstruct: failed to install [object Object]: Error: Command failed: C:\Go\bin\go.exe get -v github.com/davidrjenni/reftools/cmd/fillstruct
go get github.com/davidrjenni/reftools/cmd/fillstruct: module github.com/davidrjenni/reftools/cmd/fillstruct: Get "https://proxy.golang.org/github.com/davidrjenni/reftools/cmd/fillstruct/@v/list": dial tcp 34.64.4.113:443: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
undefined

goplay: failed to install [object Object]: Error: Command failed: C:\Go\bin\go.exe get -v github.com/haya14busa/goplay/cmd/goplay
go get github.com/haya14busa/goplay/cmd/goplay: module github.com/haya14busa/goplay/cmd/goplay: Get "https://proxy.golang.org/github.com/haya14busa/goplay/cmd/goplay/@v/list": dial tcp 34.64.4.113:443: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
undefined

godoctor: failed to install [object Object]: Error: Command failed: C:\Go\bin\go.exe get -v github.com/godoctor/godoctor
go get github.com/godoctor/godoctor: module github.com/godoctor/godoctor: Get "https://proxy.golang.org/github.com/godoctor/godoctor/@v/list": dial tcp 34.64.4.81:443: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
undefined

dlv: failed to install [object Object]: Error: Command failed: C:\Go\bin\go.exe get -v github.com/go-delve/delve/cmd/dlv
go get github.com/go-delve/delve/cmd/dlv: module github.com/go-delve/delve/cmd/dlv: Get "https://proxy.golang.org/github.com/go-delve/delve/cmd/dlv/@v/list": dial tcp 34.64.4.81:443: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
undefined

gocode-gomod: failed to install [object Object]: Error: Command failed: C:\Go\bin\go.exe get -v -d github.com/stamblerre/gocode
go get github.com/stamblerre/gocode: module github.com/stamblerre/gocode: Get "https://proxy.golang.org/github.com/stamblerre/gocode/@v/list": dial tcp 34.64.4.81:443: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
undefined

goimports: failed to install [object Object]: Error: Command failed: C:\Go\bin\go.exe get -v golang.org/x/tools/cmd/goimports
go get golang.org/x/tools/cmd/goimports: module golang.org/x/tools/cmd/goimports: Get "https://proxy.golang.org/golang.org/x/tools/cmd/goimports/@v/list": dial tcp 34.64.4.81:443: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
undefined

how to solve this fucking problem