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feat: set imap ALPN when connecting to IMAP servers

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IMAP has a registered protocol ID
listed at <https://www.iana.org/assignments/tls-extensiontype-values/tls-extensiontype-values.xhtml#alpn-protocol-ids>

Requesting specific ALPN on the client
should allow the server to
multiplex multiple protocols on the same
port and dispatch
requests to the correct backend on the proxy such as HAProxy.
This commit is contained in:
link2xt
2024-07-10 23:20:41 +00:00
parent f84e603318
commit bd83fb3d38
3 changed files with 14 additions and 12 deletions
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8
src/smtp.rs
View File

@@ -120,7 +120,7 @@ impl Smtp {
let socks5_stream = socks5_config
.connect(context, hostname, port, SMTP_TIMEOUT, strict_tls)
.await?;
let tls_stream = wrap_tls(strict_tls, hostname, socks5_stream).await?;
let tls_stream = wrap_tls(strict_tls, hostname, &[], socks5_stream).await?;
let buffered_stream = BufStream::new(tls_stream);
let session_stream: Box<dyn SessionBufStream> = Box::new(buffered_stream);
let client = smtp::SmtpClient::new().smtp_utf8(true);
@@ -144,7 +144,7 @@ impl Smtp {
let client = smtp::SmtpClient::new().smtp_utf8(true);
let transport = SmtpTransport::new(client, BufStream::new(socks5_stream)).await?;
let tcp_stream = transport.starttls().await?.into_inner();
let tls_stream = wrap_tls(strict_tls, hostname, tcp_stream)
let tls_stream = wrap_tls(strict_tls, hostname, &[], tcp_stream)
.await
.context("STARTTLS upgrade failed")?;
let buffered_stream = BufStream::new(tls_stream);
@@ -179,7 +179,7 @@ impl Smtp {
strict_tls: bool,
) -> Result<SmtpTransport<Box<dyn SessionBufStream>>> {
let tcp_stream = connect_tcp(context, hostname, port, SMTP_TIMEOUT, false).await?;
let tls_stream = wrap_tls(strict_tls, hostname, tcp_stream).await?;
let tls_stream = wrap_tls(strict_tls, hostname, &[], tcp_stream).await?;
let buffered_stream = BufStream::new(tls_stream);
let session_stream: Box<dyn SessionBufStream> = Box::new(buffered_stream);
let client = smtp::SmtpClient::new().smtp_utf8(true);
@@ -200,7 +200,7 @@ impl Smtp {
let client = smtp::SmtpClient::new().smtp_utf8(true);
let transport = SmtpTransport::new(client, BufStream::new(tcp_stream)).await?;
let tcp_stream = transport.starttls().await?.into_inner();
let tls_stream = wrap_tls(strict_tls, hostname, tcp_stream)
let tls_stream = wrap_tls(strict_tls, hostname, &[], tcp_stream)
.await
.context("STARTTLS upgrade failed")?;
let buffered_stream = BufStream::new(tls_stream);