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Add standard reference for UID FETCH quirk

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Alexander Krotov
2020-01-31 02:16:05 +03:00
parent cce32229e0
commit d83652b0fc
1 changed files with 7 additions and 2 deletions
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9
src/imap/mod.rs
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@@ -583,8 +583,13 @@ impl Imap {
for msg in &list { for msg in &list {
let cur_uid = msg.uid.unwrap_or_default(); let cur_uid = msg.uid.unwrap_or_default();
if cur_uid <= last_seen_uid { if cur_uid <= last_seen_uid {
// seems that at least dovecot sends the last available UID // If the mailbox is not empty, results always include
// even if we asked for higher UID+N:* // at least one UID, even if last_seen_uid+1 is past
// the last UID in the mailbox. It happens because
// uid+1:* is interpreted the same way as *:uid+1.
// See https://tools.ietf.org/html/rfc3501#page-61 for
// standard reference. Therefore, sometimes we receive
// already seen messages and have to filter them out.
info!( info!(
context, context,
"fetch_new_messages: ignoring uid {}, last seen was {}", cur_uid, last_seen_uid "fetch_new_messages: ignoring uid {}, last seen was {}", cur_uid, last_seen_uid