Motivation: If the remote server returns an invalid response in the form "000 \r\n" (i.e. a three digit code, then space, but no details), null is added as a singletonList to the response being constructed. This seems unexpected and it would be easier to handle an empty details list in client code. Modifications: If detail is null (because frame.isReadable() returned false after reading the separator), initialise DefaultSmtpResponse with an empty list instead of a list containing a single null value. Result: When encountering this malformed server response, a DefaultSmtpResponse with a code but no details will be created. |
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codec/smtp |