Sending email example not working with dnxcore50 #293
Comments
|
Since it works on Windows my best guess is there are still bugs I the core fx for other platforms. Not likely a bug in Mailkit/Mimekit so probably best to try again after rc2. |
|
Ups! |
|
That's odd, the MailKit nuget depends on System.Net.Security v4.0.0-beta-23516, so it should just pull in the required nuget. |
|
Do you have all the same references as what I have in my project.json? https://github.com/joeaudette/cloudscribe/blob/master/src/cloudscribe.Messaging.Email/project.json If you post your project.json it might help with diagnosis |
|
Oh, I missed that you are trying this on MacOS X... It may be a good idea to prototype your app using .NET 4.5 or something that Mono supports and move to .NETCore once it stabilizes. I'm not sure what the state of .NETCore on Mac OS X is. |
|
Another possibility is that you might need to run |
|
Hi @joeaudette {
"version": "1.0.0-*",
"description": "app01console Console Application",
"authors": [ "" ],
"tags": [ "" ],
"projectUrl": "",
"licenseUrl": "",
"compilationOptions": {
"emitEntryPoint": true
},
"tooling": {
"defaultNamespace": "app01console"
},
"dependencies": {
},
"commands": {
"app01console": "app01console"
},
"frameworks": {
"dnxcore50": {
"dependencies": {
"Microsoft.CSharp": "4.0.1-beta-23516",
"System.Collections": "4.0.11-beta-23516",
"System.Console": "4.0.0-beta-23516",
"System.Linq": "4.0.1-beta-23516",
"System.Threading": "4.0.11-beta-23516",
"MimeKit": "1.3.0-beta6",
"MailKit": "1.3.0-beta6"
}
}
}
}and this is my program, the same example @jstedfast has in the readme: using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Text;
using MailKit.Net.Smtp;
using MailKit;
using MimeKit;
namespace app01console
{
public class Program
{
public static void Main(string[] args)
{
var message = new MimeMessage ();
message.From.Add (new MailboxAddress ("Joey Tribbiani", "[email protected]"));
message.To.Add (new MailboxAddress ("Mrs. Chanandler Bong", "[email protected]"));
message.Subject = "How you doin'?";
message.Body = new TextPart ("plain") {
Text = @"Hey Chandler,
I just wanted to let you know that Monica and I were going to go play some paintball, you in?
-- Joey"
};
using (var client = new SmtpClient ()) {
client.Connect ("smtp.friends.com", 587, false);
// Note: since we don't have an OAuth2 token, disable
// the XOAUTH2 authentication mechanism.
client.AuthenticationMechanisms.Remove ("XOAUTH2");
// Note: only needed if the SMTP server requires authentication
client.Authenticate ("joey", "password");
client.Send (message);
client.Disconnect (true);
}
}
}
} |
|
I refactored the example to make it appear more like your code @joeaudette and now I'm getting a warning about the async thing (I haven't had the time to understand how async and non blocking works in c#) when compiling and not getting the using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Text;
using MailKit.Net.Smtp;
using MailKit;
using MimeKit;
namespace app01console
{
public class Program
{
public static void Main(string[] args)
{
var mailSender = new EMailSender();
mailSender.SendEmailAsync();
}
}
public class EMailSender
{
public async Task SendEmailAsync() {
var message = new MimeMessage ();
message.From.Add (new MailboxAddress ("Joey Tribbiani", "[email protected]"));
message.To.Add (new MailboxAddress ("Mrs. Chanandler Bong", "[email protected]"));
message.Subject = "How you doin'?";
message.Body = new TextPart ("plain") {
Text = @"Hey Chandler,
I just wanted to let you know that Monica and I were going to go play some paintball, you in?
-- Joey"
};
using (var client = new SmtpClient())
{
//client.ServerCertificateValidationCallback = delegate (
// Object obj, X509Certificate certificate, X509Chain chain,
// SslPolicyErrors errors)
//{
// return (true);
//};
await client.ConnectAsync("smtp.friends.com", 587, false);
//await client.ConnectAsync(smtpOptions.Server, smtpOptions.Port, SecureSocketOptions.StartTls);
// Note: since we don't have an OAuth2 token, disable
// the XOAUTH2 authentication mechanism.
client.AuthenticationMechanisms.Remove("XOAUTH2");
// Note: only needed if the SMTP server requires authentication
// if(smtpOptions.RequiresAuthentication)
// {
// }
await client.AuthenticateAsync("joey", "password");
client.Send(message);
Console.WriteLine("Mensaje enviado");
client.Disconnect(true);
Console.WriteLine("Cliente desconectado");
}
}
}
} |
|
Change your Main() method to be async and await the call to SendEmailAsync(): public static async void Main(string[] args)
{
var mailSender = new EMailSender();
await mailSender.SendEmailAsync();
}The await is important so that the program doesn't exit before the email is sent in a background thread. What happens is that SendEmailAsync() is spawning a brackground thread to send the email, but since the Main() method is not waiting for it to finish, it exits and the background thread is killed. Hope that helps. |
|
@jstedfast that way I can't compile it 'cause async cannot be used on Main. O found another ways of handling and now the old using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Text;
using MailKit.Net.Smtp;
using MailKit;
using MimeKit;
namespace app01console
{
public class Program
{
public static void Main(string[] args)
{
var mailSender = new EMailSender();
var task = mailSender.SendEmailAsync();
Task.WaitAll(task);
}
}
public class EMailSender
{
public async Task SendEmailAsync() {
var message = new MimeMessage ();
message.From.Add (new MailboxAddress ("Joey Tribbiani", "[email protected]"));
message.To.Add (new MailboxAddress ("Mrs. Chanandler Bong", "[email protected]"));
message.Subject = "How you doin'?";
message.Body = new TextPart ("plain") {
Text = @"Hey Chandler,
I just wanted to let you know that Monica and I were going to go play some paintball, you in?
-- Joey"
};
using (var client = new SmtpClient())
{
//client.ServerCertificateValidationCallback = delegate (
// Object obj, X509Certificate certificate, X509Chain chain,
// SslPolicyErrors errors)
//{
// return (true);
//};
await client.ConnectAsync("smtp.sendgrid.net", 587, false);
//await client.ConnectAsync(smtpOptions.Server, smtpOptions.Port, SecureSocketOptions.StartTls);
// Note: since we don't have an OAuth2 token, disable
// the XOAUTH2 authentication mechanism.
client.AuthenticationMechanisms.Remove("XOAUTH2");
// Note: only needed if the SMTP server requires authentication
// if(smtpOptions.RequiresAuthentication)
// {
// }
await client.AuthenticateAsync("myusername", "mypassword");
client.Send(message);
Console.WriteLine("Mensaje enviado");
client.Disconnect(true);
Console.WriteLine("Cliente desconectado");
}
}
}
}Here is the exception: |
|
If that simple change brought back the System.Net.Security exception, then something is broken with your DNX setup and not with your code or with MimeKit/MailKit for sure. You may need to go to https://gitter.im/dotnet/coreclr and ask for help, maybe they will have a better idea how to solve this. Unfortunately this is beyond my level of knowledge :( |
|
Hi @jstedfast |
Hi,
I'm trying to run the sending email example from MacOSX.
The build works without error but when trying to run I get the next error:
I tried adding
System.Net.Securityto my dependencies but the error remained.Could you help me with this? Is this a real bug or Am I missing something?
The text was updated successfully, but these errors were encountered: