Use lettre 0.8 with native tls 0.2.0

help
1

HI
I new to RUST

I am tring to use lettre 0.8 to send a email.

When i use native tls 0.1.5 package compiled with this version does not send email.

Try change the [dependencies] to native-tls = "0.2.2".
But it does not compile.

extern crate lettre;
extern crate lettre_email;
extern crate native_tls;

use native_tls::TlsConnector;
use native_tls::{Protocol};
use lettre::smtp::authentication::{Credentials, Mechanism};
use lettre::{EmailTransport, ClientTlsParameters, ClientSecurity};
use lettre::smtp::ConnectionReuseParameters;
use lettre::smtp::{SmtpTransportBuilder};
use lettre_email::EmailBuilder;

fn main() {
    let email = EmailBuilder::new()
        .to("amichelins@hotmail.com")
        .from("amichelins@gmail.com")
        .subject("Example RUST")
        .text("Example RUST p' frente")
        .build()
        .unwrap();

let mut tls_builder = TlsConnector::builder().unwrap();
    tls_builder.supported_protocols(&[Protocol::Tlsv10]).unwrap();

let tls_parameters =
        ClientTlsParameters::new(
            "smtplw.com.br".to_string(),
            tls_builder.build().unwrap()
        );


let mut mailer = SmtpTransportBuilder::new(("smtplw.com.br", 587), ClientSecurity::Wrapper(tls_parameters))
        .expect("Failed to create transport")
        .authentication_mechanism(Mechanism::Login)
        .credentials(Credentials::new( "login".to_string(), "password".to_string() ))
        .connection_reuse(ConnectionReuseParameters::ReuseUnlimited)
        .build();

    println!("{:?}", mailer.send(&email) );
    mailer.close();

}

When native tls is 0.2.2 this line gives error:

let mut tls_builder = TlsConnector::builder().unwrap();

For native tls is 0.2.2 this line is:
let mut tls_builder = TlsConnector::builder();

In this form the erro jumps to this line:

tls_builder.supported_protocols(&[Protocol::Tlsv10]).unwrap();

Error:
"
error[E0599]: no method named supported_protocols found for type native_tls::TlsConnectorBuilder in the current scope
--> src\main.rs:31:17
|
31 | tls_builder.supported_protocols(&[Protocol::Tlsv10]).unwrap();
| ^^^^^^^^^^^^^^^^^^^

"
How to solve this issue?

thanks in advance

2

In Rust, by convention, packages with versions 0.x and 0.y have breaking changes and are not compatible. The change of tls 0.1 to 0.2 is not simple, and will require upgrading/rewriting code that uses it.

I suggest sticking to recommended version 0.1 of tls and investigating why lettre isn't working.

3

Hi Kornel.

My problem is that i need some features present in 0.2.x version of native-tls
One of them is TlsConnector => danger_accept_invalid_certs
becouse my smtp server requires this