[Bug] - An error was reported when pulling and receiving INBOX -- “Error Domain=MCOErrorDomain Code=3 "Unable to parse response from server." UserInfo={NSLocalizedDescription=Unable to parse response from server.} ”

Summary

Platform(s)

<iOS>

Happens on Mail Server

<163>

Piece of code

MCOIMAPSession *session = [[MCOIMAPSession alloc] init];
[session setHostname:@"imaphz.qiye.163.com"];
[session setPort:993];
[session setUsername:@"xxx@datacloak.com"];
[session setPassword:@"xxxxxxx"];
[session setConnectionType:MCOConnectionTypeTLS];

Actual outcome Parse error，Why can't the data returned by Connection Logs be parsed by mailcore2

Connection Logs

* 235 FETCH (UID 1615978270 INTERNALDATE "29-May-2024 16:42:42 +0800" FLAGS (\Seen) BODYSTRUCTURE (((("text" "plain" ("charset" "UTF-8") NIL NIL "quoted-printable" 3518 67 NIL NIL NIL)("text" "html" ("charset" "UTF-8") NIL NIL "quoted-printable" 3558 69 NIL NIL NIL) "ALTERNATIVE" ("boundary" "----=_Part_6676_826437753.1716972159817") NIL NIL NIL)("image" "jpeg" ("name" "ADVLOGO1644893818405657.jpg") "<logoImageCid02>" NIL "base64" 542670 NIL ("inline" ("filename" "ADVLOGO1644893818405657.jpg")) NIL)("image" "png" ("name" "newLogo.png") "<logoImageCid01>" NIL "base64" 6694 NIL ("inline" ("filename" "newLogo.png")) NIL) "RELATED" ("boundary" "----=_Part_6675_644280001.1716972159817") NIL NIL NIL)("application" "octet-stream" ("name" "=?UTF-8?B?55S15a2Q6KGM56iL5Y2VLnBkZg==?=") NIL """" "base64" 327476 NIL ("attachment" ("filename" "=?UTF-8?B?55S15a2Q6KGM56iL5Y2VLnBkZg==?=")) NIL)("application" "octet-stream" ("name" "=?UTF-8?Q?=E7=94=B5=E5=AD=90=E5=8F=91=E7=A5=A8-1.pdf?=") NIL """" "base64" 49992 NIL ("attachment" ("filename" "=?UTF-8?Q?=E7=94=B5=E5=AD=90=E5=8F=91=E7=A5=A8-1.pdf?=")) NIL) "MIXED" ("boundary" "----=_Part_6674_799664062.1716972159817") NIL NIL NIL) BODY[HEADER.FIELDS (DATE SUBJECT FROM SENDER REPLY-TO TO CC MESSAGE-ID REFERENCES IN-REPLY-TO)] {292}
Date: Wed, 29 May 2024 16:42:39 +0800 (CST)
From: =?UTF-8?B?6aaW5rG957qm6L2m?= <dzfp@dzfp.01zhuanche.com>
To: lc@datacloak.cn
Message-ID: <2078012665.6677.1716972159820@10-71-24-22>
Subject: =?UTF-8?B?6aaW5rG957qm6L2mLeeUteWtkOWPkQ==?=
 =?UTF-8?B?56Wo5Y+K6KGM56iL5Y2V5byA5YW36YCa55+l?=
)

Expected outcome The resolution succeeded and returned to the mailing list

Link to sample code on GitHub reproducing the issue (a full Xcode project):

MailCore / mailcore2

[Bug] - An error was reported when pulling and receiving INBOX -- “Error Domain=MCOErrorDomain Code=3 "Unable to parse response from server." UserInfo={NSLocalizedDescription=Unable to parse response from server.} ” #2005