|author||Jay Conrod <firstname.lastname@example.org>||Thu Mar 12 18:56:40 2020 -0400|
|committer||Jay Conrod <email@example.com>||Thu Mar 26 20:30:18 2020 +0000|
cmd/go: add support for GOPROXY fallback on unexpected errors URLs in GOPROXY may now be separated with commas (,) or pipes (|). If a request to a proxy fails with any error (including connection errors and timeouts) and the proxy URL is followed by a pipe, the go command will try the request with the next proxy in the list. If the proxy is followed by a comma, the go command will only try the next proxy if the error a 404 or 410 HTTP response. The go command will determine how to connect to the checksum database using the same logic. Before accessing the checksum database, the go command sends a request to <proxyURL>/sumdb/<sumdb-name>/supported. If a proxy responds with 404 or 410, or if any other error occurs and the proxy URL in GOPROXY is followed by a pipe, the go command will try the request with the next proxy. If all proxies respond with 404 or 410 or are configured to fall back on errors, the go command will connect to the checksum database directly. This CL does not change the default value or meaning of GOPROXY. Fixes #37367 Change-Id: If53152ec1c3282c67d4909818b666af58884fb2c Reviewed-on: https://go-review.googlesource.com/c/go/+/223257 Run-TryBot: Jay Conrod <firstname.lastname@example.org> TryBot-Result: Gobot Gobot <email@example.com> Reviewed-by: Bryan C. Mills <firstname.lastname@example.org>
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