Fetching a body section fails with "incomplete data, need minimum X bytes"

[t348575]

Running any of these:
(with any valid uid)

let mails: Vec<_> = session.uid_fetch("22213", "BODY.PEEK[1]").await?.try_collect().await?;
let mails: Vec<_> = session.uid_fetch("22213", "BODY[1]").await?.try_collect().await?;

causes no body, text or any other data to be parsed, and the trace shows it hitting this:

async-imap/src/imap_stream.rs

Line 123 in 60ed0ff

Err(nom::Err::Incomplete(Needed::Size(min))) => {

The need minimum X bytes is always a little lower than the size of the data returned. In this case 220 bytes returned, but it says minimum 130.

Run with gmail imap servers, with this crate setup:

async-imap = { version = "0.6.0", default-features = false, features = ["runtime-tokio"] }

calling BODY[] or BODY.PEEK[] or any other call works fine.

Connecting to the imap server directly like so:

openssl s_client -connect imap.gmail.com:993 -crlf

and running the same commands (with same UIDs) seems to work fine.

[link2xt]

Does it only happen with this particular message (UID=22213) or with any messages? Could you extract the input and try to turn it into an imap-proto test, e.g. try inserting it somewhere here: https://github.com/djc/tokio-imap/blob/ae6e3437eacf21340bca9d00ae8e9f16509bb572/imap-proto/src/parser/tests.rs

What is the version of imap-proto in the lockfile?

[t348575]

imap-proto is 0.16.2 in the lockfile. I tried plugging it into a test there and it returned an error (i directly copy pasted the email from the terminal, so this might have caused some CRLF to disappear). The email used was the notification email i got from github for your reply above.

This happens to any UID email.

#[test]
fn my_test() {
    let lines = b"* 20763 FETCH (BODY[1] {506}\r\n
Does it only happen with this particular message or with any messages? Could you extract the input and try to turn it into an `imap-proto` test, e.g. try inserting it somewhere here: https://github.com/jonhoo/rust-imap/blob/main/src/parse.rs

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Message ID: <async-email/async-imap/issues/71/[email protected]>)
A008 OK Success\r\n
";
    println!("{:#?}", parse_response(lines));
}

The above returns an Err with the bytes and code: TakeWhile1