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Fix/optimize isTempError method
Not that this particular part of the code is performance critical, but I figured that the `strconv.Atoi()` is actually useless in here. Since all we want to know is if the error code from the SMTP server is a 4xx error, we can just check the first rune of the returned error. The `Atoi` provides us with no advantage over the simple rune compare (except of taking about 3ns longer to execute)
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1 changed files with 1 additions and 9 deletions
10
senderror.go
10
senderror.go
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@ -7,7 +7,6 @@ package mail
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import (
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"errors"
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"fmt"
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"strconv"
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"strings"
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)
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@ -132,12 +131,5 @@ func (r SendErrReason) String() string {
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// isTempError checks the given SMTP error and returns true if the given error is of temporary nature
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// and should be retried
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func isTempError(e error) bool {
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ec, err := strconv.Atoi(e.Error()[:3])
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if err != nil {
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return false
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}
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if ec >= 400 && ec <= 500 {
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return true
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}
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return false
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return e.Error()[0] == '4'
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}
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