40 lines
1.1 KiB
Go
40 lines
1.1 KiB
Go
package netxlite
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import (
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"errors"
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"strings"
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"github.com/ooni/probe-cli/v3/internal/engine/netx/errorx"
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)
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// reduceErrors finds a known error in a list of errors since
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// it's probably most relevant.
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//
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// Deprecation warning
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//
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// Albeit still used, this function is now DEPRECATED.
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//
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// In perspective, we would like to transition to a scenario where
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// full dialing is NOT used for measurements and we return a multierror here.
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func reduceErrors(errorslist []error) error {
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if len(errorslist) == 0 {
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return nil
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}
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// If we have a known error, let's consider this the real error
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// since it's probably most relevant. Otherwise let's return the
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// first considering that (1) local resolvers likely will give
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// us IPv4 first and (2) also our resolver does that. So, in case
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// the user has no IPv6 connectivity, an IPv6 error is going to
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// appear later in the list of errors.
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for _, err := range errorslist {
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var wrapper *errorx.ErrWrapper
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if errors.As(err, &wrapper) && !strings.HasPrefix(
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err.Error(), "unknown_failure",
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) {
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return err
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}
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}
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// TODO(bassosimone): handle this case in a better way
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return errorslist[0]
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}
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