在将VScode升级至 1.13后让升级gocode，在升级时报出如下错误
D:\go_work\src>go get -u -v github.com/mdempsky/gocode github.com/mdempsky/gocode (download) Fetching https://golang.org/x/tools/go/gcexportdata?go-get=1 https fetch failed: Get https://golang.org/x/tools/go/gcexportdata?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. package golang.org/x/tools/go/gcexportdata: unrecognized import path "golang.org/x/tools/go/gcexportdata" (https fetch: Get https://golang.org/x/tools/go/gcexportdata?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.)
失败原因，发现是从github/golang中下载的tools不包含gocode
解决方法:
根据提示图片信息进行查找，（github/golang下载详见：http://lc161616.cnblogs.com/p/10132518.html）。提示图片如下：
根据vscode提示去github.com/mdempsky/gocode clone下来代码。然后放置到提示图片的路径下：为了保险我又放置在%GOPATH%\src\golang.org\x\tools下一份。
最后手动执行go get，安装成功
D:\go_work\src>go get -u -v github.com/mdempsky/gocode github.com/mdempsky/gocode (download) Fetching https://golang.org/x/tools/go/gcexportdata?go-get=1 https fetch failed: Get https://golang.org/x/tools/go/gcexportdata?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. golang.org/x/tools (download) Fetching https://golang.org/x/tools/go/internal/gcimporter?go-get=1 https fetch failed: Get https://golang.org/x/tools/go/internal/gcimporter?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. github.com/mdempsky/gocode/internal/lookdot github.com/mdempsky/gocode/internal/cache github.com/mdempsky/gocode/internal/suggest github.com/mdempsky/gocode/internal/gbimporter github.com/mdempsky/gocode