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The `tlsconfig.SystemCertPool` utility in go-connections was added in [docker/go-connections@55aadc3], at which time Go stdlib didn't support system-pools ([x509.SystemCertPool]) on Windows, so an empty pool was constructed. Support for system pools on Windows originally added in Go 1.8 (through [golang/go@05471e9]), but reverted, and re-implemented in Go 1.18 (through [golang/go@3544082]). Go 1.18 and up now implement this, but, unlike Linux, which uses a pure-Go implementation, certificate validation is handled by the system: > On macOS and Windows, certificate verification is handled by system APIs, > but the package aims to apply consistent validation rules across operating > systems. On macOS and Windows, x509.SystemCertPool returns an empty Pool, with the `systemPool` set to `true` (see [loadSystemRoots]). This must be considered an implementation detail; custom CAs can be appended to this pool, and handled as usual. This patch removes the special handling on Windows, removing the dependency on go-connections for this part. [docker/go-connections@55aadc3]:55aadc3cc5[golang/go@05471e9]:05471e9ee6[golang/go@3544082]:3544082f75[x509.SystemCertPool]: https://pkg.go.dev/crypto/x509#SystemCertPool [loadSystemRoots]: https://cs.opensource.google/go/go/+/refs/tags/go1.26.1:src/crypto/x509/root_windows.go;l=15-17 Signed-off-by: Sebastiaan van Stijn <github@gone.nl>