MailKit 获取子文件夹

Question

我正在使用 Mailkit GetSubfolders 方法，该方法向服务器发出此请求/响应

C: A00000005 LIST "" "INBOX.%" RETURN (SUBSCRIBED CHILDREN STATUS (UIDVALIDITY))
S: * LIST (\HasNoChildren \UnMarked) "." INBOX.kkkk
S: * STATUS INBOX.kkkk (UIDVALIDITY 1491227899)
S: * LIST (\HasChildren \UnMarked) "." INBOX.Archive
S: * LIST (\HasChildren \UnMarked) "." INBOX.spam
S: * LIST (\Subscribed \HasNoChildren \UnMarked) "." INBOX.Sent
S: * STATUS INBOX.Sent (UIDVALIDITY 1491227490)
S: * LIST (\Subscribed \HasNoChildren \UnMarked) "." INBOX.Junk
S: * STATUS INBOX.Junk (UIDVALIDITY 1491227488)
S: * LIST (\Subscribed \HasNoChildren \UnMarked) "." INBOX.Drafts
S: * STATUS INBOX.Drafts (UIDVALIDITY 1491227487)
S: * LIST (\Subscribed \HasNoChildren \UnMarked) "." INBOX.Trash
S: * STATUS INBOX.Trash (UIDVALIDITY 1491227603)
S: A00000005 OK List completed (0.001 + 0.000 secs).

但是，我注意到 Outlook 和其他邮件客户端显示了我使用 MailKit GetSubfolders 获得的更多文件夹。特别是 INBOX.INBOX.dfgdfg 文件夹。我执行了 LIST "" "INBOX.*" （将 % 更改为 *），我看到这次服务器返回了丢失的文件夹（见下文）。我的问题是如何使用 MailKit 方法进入 INBOX.INBOX.dfgdfg 文件夹？

C: A00000005 LIST "" "INBOX.*" RETURN (SUBSCRIBED CHILDREN STATUS (UIDVALIDITY))
S: * LIST (\HasNoChildren \UnMarked) "." INBOX.kkkk
S: * STATUS INBOX.kkkk (UIDVALIDITY 1491227899)
S: * LIST (\HasChildren \UnMarked) "." INBOX.Archive
S: * LIST (\Subscribed \HasNoChildren \UnMarked) "." INBOX.Archive.000
S: * STATUS INBOX.Archive.000 (UIDVALIDITY 1491227889)
S: * LIST (\HasNoChildren \UnMarked) "." INBOX.Archive.aaaaa
S: * STATUS INBOX.Archive.aaaaa (UIDVALIDITY 1491227877)
S: * LIST (\HasChildren \UnMarked) "." INBOX.spam
S: * LIST (\HasNoChildren \UnMarked) "." INBOX.spam.666
S: * STATUS INBOX.spam.666 (UIDVALIDITY 1491227878)
S: * LIST (\HasNoChildren \UnMarked) "." INBOX.spam.nnhnhn
S: * STATUS INBOX.spam.nnhnhn (UIDVALIDITY 1491227870)
S: * LIST (\HasNoChildren \UnMarked) "." INBOX.spam.test
S: * STATUS INBOX.spam.test (UIDVALIDITY 1491227856)
S: * LIST (\Subscribed \HasNoChildren \UnMarked) "." INBOX.Sent
S: * STATUS INBOX.Sent (UIDVALIDITY 1491227490)
S: * LIST (\Subscribed \HasNoChildren \UnMarked) "." INBOX.Junk
S: * STATUS INBOX.Junk (UIDVALIDITY 1491227488)
S: * LIST (\Subscribed \HasNoChildren \UnMarked) "." INBOX.Drafts
S: * STATUS INBOX.Drafts (UIDVALIDITY 1491227487)
S: * LIST (\Subscribed \HasNoChildren \UnMarked) "." INBOX.Trash
S: * STATUS INBOX.Trash (UIDVALIDITY 1491227603)
S: * LIST (\HasNoChildren \UnMarked) "." INBOX.INBOX.dfgdfg
S: * STATUS INBOX.INBOX.dfgdfg (UIDVALIDITY 1491227900)
S: A00000005 OK List completed (0.001 + 0.000 secs).

Answer 1

我能够回答我的问题。 ImapClient.GetFolders 正在返回命名空间中的所有文件夹，包括丢失的 INBOX.INBOX.dfgdfg

Answer 2

如果你想递归，你应该在GetSubfolders()返回的每个文件夹上调用GetSubfolders()。

使用* 的问题在于，在某些 IMAP 服务器上（cough UW.IMAPd cough），如果用户有符号链接，服务器响应将永远不会结束因为它没有正确检测符号链接递归。