private async Task <MailKit.IMailTransport> CreateTransport()
{
SecureSocketOptions secureSocketOptions = SecureSocketOptions.SslOnConnect;
MailKit.Net.Smtp.SmtpClient smtpClient = new MailKit.Net.Smtp.SmtpClient();
smtpClient.ServerCertificateValidationCallback = (sender, certificate, chain, sslPolicyErrors) => true;
try {
await smtpClient.ConnectAsync(_Settings.SmtpMailServer, _Settings.SmtpPort, secureSocketOptions);
var authMech = smtpClient.AuthenticationMechanisms;
if (smtpClient.IsConnected)
{
await smtpClient.AuthenticateAsync(_Settings.SenderLogin, _Settings.SenderPassword);
}
if (!smtpClient.IsAuthenticated)
{
return(smtpClient);
}
}
catch (AggregateException e) {
_Logger?.LogError(e, e.Message);
throw;
}
return(smtpClient);
}
public override void LoadSetting(string fieldName, string fieldValue)
{
base.LoadSetting(fieldName, fieldValue);
switch (fieldName.ToLower())
{
case "mailhost":
MailHost = fieldValue; break;
case "username":
UserName = fieldValue; break;
case "userpassword":
UserPassword = fieldValue; break;
case "mailboxname":
MailboxName = fieldValue; break;
case "clienttype":
ClientType = fieldValue; break;
case "encryption":
Encryption = (SecureSocketOptions)Enum.Parse(typeof(SecureSocketOptions), fieldValue); break;
case "query":
Query = fieldValue; break;
case "includesubfolders":
IncludeSubfolders = Convert.ToBoolean(fieldValue); break;
case "unreadmailsonly":
UnreadMailsOnly = Convert.ToBoolean(fieldValue); break;
}
}
public static async Task ReconnectAsync(string host, int port, SecureSocketOptions options)
{
// Note: for demo purposes, we're ignoring SSL validation errors (don't do this in production code)
Client.ServerCertificateValidationCallback = (sender, certificate, chain, sslPolicyErrors) => true;
await Client.ConnectAsync(host, port, options);
try {
await Client.AuthenticateAsync(Credentials);
} catch {
MessageBox.Show("Failed to Authenticate to server. If you are using GMail, then you probably " +
"need to go into your GMail settings to enable \"less secure apps\" in order " +
"to get this demo to work.\n\n" +
"For a real Mail application, you'll want to add support for obtaining the " +
"user's OAuth2 credentials to prevent the need for user's to enable this, but " +
"that is beyond the scope of this demo.",
"Authentication Error");
throw;
}
if (Client.Capabilities.HasFlag(ImapCapabilities.UTF8Accept))
{
await Client.EnableUTF8Async();
}
CurrentTask = Task.FromResult(true);
}
public void SendMessage(MMailMessage message)
{
var smtpClient = new MailKit.Net.Smtp.SmtpClient();
if (options.IgnoreSSLError)
{
smtpClient.ServerCertificateValidationCallback += (sender, certificate, chain, errors) => true;
}
SecureSocketOptions secOpts = SecureSocketOptions.Auto;
if (!options.UseSSL)
{
secOpts = SecureSocketOptions.None;
}
smtpClient.Connect(options.SMTPServer, options.SMTPServerPort, secOpts);
smtpClient.AuthenticationMechanisms.Remove("XOAUTH2");
if (options.Credentials != null)
{
smtpClient.Authenticate(options.Credentials);
}
smtpClient.Send(message);
smtpClient.Disconnect(true);
}
public async Task SendEmailAsync(string email, string subject, string body)
{
var message = new MimeMessage();
message.From.Add(new MailboxAddress(_smtpSettings.SenderName, _smtpSettings.SenderEmail));
message.To.Add(MailboxAddress.Parse(email));
message.Subject = subject;
message.Body = new TextPart(TextFormat.Html)
{
Text = body
};
using (var smtp = new SmtpClient())
{
smtp.ServerCertificateValidationCallback = (s, c, h, e) => true;
smtp.MessageSent += (sender, a) =>
{
};
SecureSocketOptions secureSocketOptions = SecureSocketOptions.Auto;
Enum.TryParse(_smtpSettings.SecureSocketOptions, out secureSocketOptions);
await smtp.ConnectAsync(_smtpSettings.Server, _smtpSettings.Port, secureSocketOptions);
await smtp.AuthenticateAsync(_smtpSettings.Username, _smtpSettings.Password);
await smtp.SendAsync(message);
await smtp.DisconnectAsync(true);
}
}
public override void Connect(Stream stream, string host, int port = 0, SecureSocketOptions options = SecureSocketOptions.Auto,
CancellationToken cancellationToken = new CancellationToken())
{
if (ConnectException != null)
{
throw ConnectException;
}
}
public MailSender(SmtpConfiguration configuration)
{
// TODO check params
this.Credentials = new NetworkCredential(configuration.Username, configuration.Password);
this.Host = configuration.Host;
this.Port = configuration.Port;
this.SecurityOptions = configuration.SecureSocketOptions;
}
public MailSender(ICredentials credentials, string host, int port, SecureSocketOptions securityOptions)
{
// TODO check params
this.Credentials = credentials;
this.Host = host;
this.Port = port;
this.SecurityOptions = securityOptions;
}
public void OverrideWith(SmtpConfiguration other)
{
this.Host = other.Host;
this.Port = other.Port;
this.Username = other.Username;
this.Password = other.Password;
this.SecureSocketOptions = other.SecureSocketOptions;
}
public MailSender(string host, ushort port, SecureSocketOptions options, string?username, string?password)
{
this.host = host;
this.port = port;
this.options = options;
this.username = username;
this.password = password;
}
public IdleEmailService(IEmailConfiguration emailConfiguration, IKudoService kudoService)
{
_emailConfiguration = emailConfiguration;
_kudoService = kudoService;
sslOptions = SecureSocketOptions.Auto;
messages = new List <IMessageSummary>();
cancel = new CancellationTokenSource();
client = new ImapClient(new ProtocolLogger(Console.OpenStandardError()));
}
public EMailController(string mailServer, int port, SecureSocketOptions secureOptions = SecureSocketOptions.Auto, bool authenticated = false, string userName = null, string password = null)
{
_mailServer = mailServer;
_mailServerPort = port;
_secureOptions = secureOptions;
_authenticated = authenticated;
_username = userName;
_password = password;
}
public override Task ConnectAsync(Stream stream, string host, int port = 0, SecureSocketOptions options = SecureSocketOptions.Auto,
CancellationToken cancellationToken = new CancellationToken())
{
if (ConnectException != null)
{
throw ConnectException;
}
return(Task.CompletedTask);
}
public IdleClient(string host, int port, SecureSocketOptions sslOptions, string username, string password)
{
this.client = new ImapClient(new ProtocolLogger(Console.OpenStandardError()));
this.messages = new List <IMessageSummary> ();
this.cancel = new CancellationTokenSource();
this.sslOptions = sslOptions;
this.username = username;
this.password = password;
this.host = host;
this.port = port;
}
public Configuration(string host, int port, int timeoutInMilliseconds, string?userName, string?password, string?secureSocketOption)
{
Host = host;
Port = port;
TimeoutInMilliseconds = timeoutInMilliseconds;
Credential = new Credential(userName, password);
SecureSocketOption = Enum.TryParse <SecureSocketOptions>(secureSocketOption, out var secureSocketOptionEnum)
? secureSocketOptionEnum
: SecureSocketOptions.StartTlsWhenAvailable;
}
public static SmtpClient Client(string host = "localhost", int port = 9025, SecureSocketOptions options = SecureSocketOptions.Auto)
{
var client = new SmtpClient();
client.Connected += (sender, args) =>
{
};
client.Connect("localhost", 9025, options);
return(client);
}
public void Logon(InternetMailProfile profile)
{
SecureSocketOptions options = SecureSocketOptions.Auto;
_client.Timeout = profile.Timeout * 1000;
_client.ServerCertificateValidationCallback = (s, c, h, e) => true;
_client.Connect(profile.SmtpServerAddress, profile.GetSmtpPort(), options);
if (profile.SmtpUser != "")
{
_client.Authenticate(profile.SmtpUser, profile.SmtpPassword);
}
}
public MailWorker(ICredentials credentials, string server, int prt)
{
Credentials = credentials;
host = server;
port = prt;
Client.Disconnected += OnClientDisconnected;
Client.Connected += Client_Connected;
Client.Alert += Client_Alert;
Client.MetadataChanged += Client_MetadataChanged;
options = SecureSocketOptions.SslOnConnect;
cancel = new CancellationTokenSource();
}
public SmtpClient CreateSmtpClient(NetworkCredential credentials, string host, int port, SecureSocketOptions options, int timeout)
{
var client = new SmtpClient {
Timeout = timeout
};
this.credentials = credentials;
this.client = client;
this.host = host;
this.port = port;
this.socketOptions = options;
ConnectClient(this.client);
return(this.client);
}
// string proSender = "*****@*****.**";
public IdleClient(string host, int port, SecureSocketOptions sslOptions, string username, string password, string transperfectEmail, string transperfectPass)
{
logWriter = new LogWriter("Start IdleClient ...");
client = new ImapClient(new ProtocolLogger(Console.OpenStandardError()));
messages = new List <IMessageSummary>();
cancel = new CancellationTokenSource();
this.sslOptions = sslOptions;
this.username = username;
this.password = password;
this.transperfectEmail = transperfectEmail;
this.transperfectPass = transperfectPass;
this.host = host;
this.port = port;
autoRun = new AutoRun(this.username, this.transperfectEmail, this.transperfectPass);
}
public static async Task ReconnectAsync(string host, int port, SecureSocketOptions options)
{
// Note: for demo purposes, we're ignoring SSL validation errors (don't do this in production code)
Client.ServerCertificateValidationCallback = (sender, certificate, chain, sslPolicyErrors) => true;
await Client.ConnectAsync(host, port, options);
await Client.AuthenticateAsync(Credentials);
if (Client.Capabilities.HasFlag(ImapCapabilities.UTF8Accept))
{
await Client.EnableUTF8Async();
}
CurrentTask = Task.FromResult(true);
}
public SmtpEmailTransport(SmtpOptions options)
{
_options = options;
var sender = options.SenderAddress ?? DefaultSender;
_sender = new MailboxAddress(options.SenderName, sender);
_socketOptions = options.UseEncryption ? SecureSocketOptions.StartTls : SecureSocketOptions.None;
Uri senderUri;
if (Uri.TryCreate($"mailto:{sender}", UriKind.Absolute, out senderUri))
{
_localDomain = senderUri.Host;
}
}
private MailSendResult SendViaMailKit(MimeMessage message)
{
MailSendResult sendResult = new MailSendResult();
if (!message.From.Any())
{
message.From.Add(new MailboxAddress(_settingsService.GetSettings <string>("SystemEmailSenderName"), _settingsService.GetSettings <string>("SystemEmailAddress")));
}
if (AppSettingsHelper.EmailBlindCarbonCopyEnabled)
{
string bcc = AppSettingsHelper.EmailBlindCarbonCopyAddress;
message.Bcc.Add(new MailboxAddress(bcc));
}
string host = _settingsService.GetSettings <string>("EmailSmtpUrl");
int port = _settingsService.GetSettings <int>("EmailSmtpPort");
SecureSocketOptions socketSecurityOption = _settingsService.GetSettings <bool>("SmtpSslEnabled") ? SecureSocketOptions.SslOnConnect : SecureSocketOptions.Auto;
string username = _settingsService.GetSettings <string>("EmailLogin");
string password = _settingsService.GetSettings <string>("EmailPassword");
try
{
Task.Run(async() =>
{
using (var smtp = new MailKit.Net.Smtp.SmtpClient())
{
await smtp.ConnectAsync(host, port, socketSecurityOption);
await smtp.AuthenticateAsync(username, password);
await smtp.SendAsync(message); //отправка
sendResult.Success = true;
await smtp.DisconnectAsync(true);
}
}).Wait();
}
catch (Exception e)
{
_logService.LogError(e);
sendResult.Success = false;
sendResult.ErrorMsg = e.Message;
}
return(sendResult);
}
/// <summary>
/// Asynchronously establish a connection to the specified mail server.
/// </summary>
/// <remarks>
/// Asynchronously establishes a connection to the specified mail server.
/// </remarks>
/// <returns>An asynchronous task context.</returns>
/// <param name="host">The host name to connect to.</param>
/// <param name="port">The port to connect to. If the specified port is <c>0</c>, then the default port will be used.</param>
/// <param name="options">The secure socket options to when connecting.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <exception cref="System.ArgumentNullException">
/// <paramref name="host"/> is <c>null</c>.
/// </exception>
/// <exception cref="System.ArgumentOutOfRangeException">
/// <paramref name="port"/> is not between <c>0</c> and <c>65535</c>.
/// </exception>
/// <exception cref="System.ArgumentException">
/// The <paramref name="host"/> is a zero-length string.
/// </exception>
/// <exception cref="System.ObjectDisposedException">
/// The <see cref="MailService"/> has been disposed.
/// </exception>
/// <exception cref="System.InvalidOperationException">
/// The <see cref="MailService"/> is already connected.
/// </exception>
/// <exception cref="System.OperationCanceledException">
/// The operation was canceled via the cancellation token.
/// </exception>
/// <exception cref="System.IO.IOException">
/// An I/O error occurred.
/// </exception>
/// <exception cref="ProtocolException">
/// A protocol error occurred.
/// </exception>
public virtual Task ConnectAsync(string host, int port = 0, SecureSocketOptions options = SecureSocketOptions.Auto, CancellationToken cancellationToken = default(CancellationToken))
{
if (host == null)
{
throw new ArgumentNullException("host");
}
if (host.Length == 0)
{
throw new ArgumentException("The host name cannot be empty.", "host");
}
if (port < 0 || port > 65535)
{
throw new ArgumentOutOfRangeException("port");
}
return(Task.Factory.StartNew(() => {
lock (SyncRoot) {
Connect(host, port, options, cancellationToken);
}
}, cancellationToken, TaskCreationOptions.None, TaskScheduler.Default));
}
async Task ConnectAsync(string host, int port, SecureSocketOptions options, bool doAsync, CancellationToken cancellationToken)
{
using (var socket = await ConnectSocket(host, port, doAsync, cancellationToken).ConfigureAwait(false)) {
hostName = host;
var ssl = new SslStream(new NetworkStream(socket, false), false, ValidateRemoteCertificate);
try {
if (doAsync)
{
await ssl.AuthenticateAsClientAsync(host, ClientCertificates, SslProtocols, CheckCertificateRevocation).ConfigureAwait(false);
}
else
{
ssl.AuthenticateAsClient(host, ClientCertificates, SslProtocols, CheckCertificateRevocation);
}
} catch (Exception ex) {
ssl.Dispose();
throw SslHandshakeException.Create(this, ex, false, "HTTP", host, port, 443, 80);
}
}
}
private MailManager()
{
try
{
var smtpConfig = ConfigManager.Configuration.GetSection("SMTP");
Host = smtpConfig.GetValue <string>("Host");
Port = smtpConfig.GetValue <int>("Port");
Ssl = smtpConfig.GetValue <bool>("SSL") ? SecureSocketOptions.StartTls : SecureSocketOptions.None;
_smtp = new SmtpClient();
_smtp.Connect(Host, Port, Ssl);
_senderThread = new Thread(SendMails)
{
Name = "Portunus Mail Dispatcher Thread",
Priority = ThreadPriority.BelowNormal
};
}
catch (Exception ex)
{
_log.Error(ex, "Could not initialize mail sender.");
throw; // cannot operate without mail sending
}
}
public override INotifier Create(ILogger logger, IConfigurationSection section)
{
using (logger.BeginScope(nameof(EmailFactory)))
{
logger.LogInformation("Processing Email Config");
SecureSocketOptions socketOptions = GetSecureSocketOptions(logger, section);
string destination = section.GetValue <string>("Destination");
string host = section.GetValue <string>("Host");
int port = section.GetValue <int>("Port", 25);
string username = section.GetValue <string>("Username");
string password = section.GetValue <string>("Password");
return(new Email()
{
Destination = destination,
Username = username,
Password = password,
Host = host,
SocketOptions = socketOptions,
Port = port
});
}
}
public Task ConnectAsync(string host, int port = 0, SecureSocketOptions options = SecureSocketOptions.Auto,
CancellationToken cancellationToken = new CancellationToken())
{
return _imapClient.ConnectAsync(host, port, options, cancellationToken);
}
protected override void OnDisconnected(string host, int port, SecureSocketOptions options, bool requested)
{
base.OnDisconnected(host, port, options, requested);
}
protected override void OnConnected(string host, int port, SecureSocketOptions options)
{
base.OnConnected(host, port, options);
}
public void Connect(Socket socket, string host, int port = 0,
SecureSocketOptions options = SecureSocketOptions.Auto,
CancellationToken cancellationToken = new CancellationToken())
{
_imapClient.Connect(socket, host, port, options, cancellationToken);
}
/// <summary>
/// Asynchronously establish a connection to the specified mail server.
/// </summary>
/// <remarks>
/// Asynchronously establishes a connection to the specified mail server.
/// </remarks>
/// <returns>An asynchronous task context.</returns>
/// <param name="host">The host name to connect to.</param>
/// <param name="port">The port to connect to. If the specified port is <c>0</c>, then the default port will be used.</param>
/// <param name="options">The secure socket options to when connecting.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <exception cref="System.ArgumentNullException">
/// <paramref name="host"/> is <c>null</c>.
/// </exception>
/// <exception cref="System.ArgumentOutOfRangeException">
/// <paramref name="port"/> is not between <c>0</c> and <c>65535</c>.
/// </exception>
/// <exception cref="System.ArgumentException">
/// The <paramref name="host"/> is a zero-length string.
/// </exception>
/// <exception cref="System.ObjectDisposedException">
/// The <see cref="MailService"/> has been disposed.
/// </exception>
/// <exception cref="System.InvalidOperationException">
/// The <see cref="MailService"/> is already connected.
/// </exception>
/// <exception cref="System.OperationCanceledException">
/// The operation was canceled via the cancellation token.
/// </exception>
/// <exception cref="System.IO.IOException">
/// An I/O error occurred.
/// </exception>
/// <exception cref="ProtocolException">
/// A protocol error occurred.
/// </exception>
public virtual Task ConnectAsync (string host, int port = 0, SecureSocketOptions options = SecureSocketOptions.Auto, CancellationToken cancellationToken = default (CancellationToken))
{
if (host == null)
throw new ArgumentNullException ("host");
if (host.Length == 0)
throw new ArgumentException ("The host name cannot be empty.", "host");
if (port < 0 || port > 65535)
throw new ArgumentOutOfRangeException ("port");
return Task.Factory.StartNew (() => {
lock (SyncRoot) {
Connect (host, port, options, cancellationToken);
}
}, cancellationToken, TaskCreationOptions.None, TaskScheduler.Default);
}
/// <summary> /// Establish a connection to the specified mail server. /// </summary> /// <remarks> /// Establishes a connection to the specified mail server. /// </remarks> /// <example> /// <code language="c#" source="Examples\SmtpExamples.cs" region="SendMessage"/> /// </example> /// <param name="host">The host name to connect to.</param> /// <param name="port">The port to connect to. If the specified port is <c>0</c>, then the default port will be used.</param> /// <param name="options">The secure socket options to when connecting.</param> /// <param name="cancellationToken">The cancellation token.</param> /// <exception cref="System.ArgumentNullException"> /// <paramref name="host"/> is <c>null</c>. /// </exception> /// <exception cref="System.ArgumentOutOfRangeException"> /// <paramref name="port"/> is not between <c>0</c> and <c>65535</c>. /// </exception> /// <exception cref="System.ArgumentException"> /// The <paramref name="host"/> is a zero-length string. /// </exception> /// <exception cref="System.ObjectDisposedException"> /// The <see cref="MailService"/> has been disposed. /// </exception> /// <exception cref="System.InvalidOperationException"> /// The <see cref="MailService"/> is already connected. /// </exception> /// <exception cref="System.OperationCanceledException"> /// The operation was canceled via the cancellation token. /// </exception> /// <exception cref="System.IO.IOException"> /// An I/O error occurred. /// </exception> /// <exception cref="ProtocolException"> /// A protocol error occurred. /// </exception> public abstract void Connect (string host, int port = 0, SecureSocketOptions options = SecureSocketOptions.Auto, CancellationToken cancellationToken = default (CancellationToken));
public EmailSendService(string userName, string password, string host, int port = 25, SecureSocketOptions secureSocketOptions = SecureSocketOptions.None)
{
_smtpClient = new();
_smtpClient.Connect(host, port, secureSocketOptions);
_smtpClient.Authenticate(userName, password);
}
/// <summary>
/// Establish a connection to the specified IMAP server.
/// </summary>
/// <remarks>
/// <para>Establishes a connection to the specified IMAP or IMAP/S server.</para>
/// <para>If the <paramref name="port"/> has a value of <c>0</c>, then the
/// <paramref name="options"/> parameter is used to determine the default port to
/// connect to. The default port used with <see cref="SecureSocketOptions.SslOnConnect"/>
/// is <c>993</c>. All other values will use a default port of <c>143</c>.</para>
/// <para>If the <paramref name="options"/> has a value of
/// <see cref="SecureSocketOptions.Auto"/>, then the <paramref name="port"/> is used
/// to determine the default security options. If the <paramref name="port"/> has a value
/// of <c>993</c>, then the default options used will be
/// <see cref="SecureSocketOptions.SslOnConnect"/>. All other values will use
/// <see cref="SecureSocketOptions.StartTlsWhenAvailable"/>.</para>
/// <para>Once a connection is established, properties such as
/// <see cref="AuthenticationMechanisms"/> and <see cref="Capabilities"/> will be
/// populated.</para>
/// </remarks>
/// <example>
/// <code language="c#" source="Examples\ImapExamples.cs" region="DownloadMessages"/>
/// </example>
/// <param name="host">The host name to connect to.</param>
/// <param name="port">The port to connect to. If the specified port is <c>0</c>, then the default port will be used.</param>
/// <param name="options">The secure socket options to when connecting.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <exception cref="System.ArgumentNullException">
/// <paramref name="host"/> is <c>null</c>.
/// </exception>
/// <exception cref="System.ArgumentOutOfRangeException">
/// <paramref name="port"/> is not between <c>0</c> and <c>65535</c>.
/// </exception>
/// <exception cref="System.ArgumentException">
/// The <paramref name="host"/> is a zero-length string.
/// </exception>
/// <exception cref="System.ObjectDisposedException">
/// The <see cref="ImapClient"/> has been disposed.
/// </exception>
/// <exception cref="System.InvalidOperationException">
/// The <see cref="ImapClient"/> is already connected.
/// </exception>
/// <exception cref="System.NotSupportedException">
/// <paramref name="options"/> was set to
/// <see cref="MailKit.Security.SecureSocketOptions.StartTls"/>
/// and the IMAP server does not support the STARTTLS extension.
/// </exception>
/// <exception cref="System.OperationCanceledException">
/// The operation was canceled via the cancellation token.
/// </exception>
/// <exception cref="System.IO.IOException">
/// An I/O error occurred.
/// </exception>
/// <exception cref="ImapProtocolException">
/// An IMAP protocol error occurred.
/// </exception>
public override void Connect (string host, int port = 0, SecureSocketOptions options = SecureSocketOptions.Auto, CancellationToken cancellationToken = default (CancellationToken))
{
if (host == null)
throw new ArgumentNullException ("host");
if (host.Length == 0)
throw new ArgumentException ("The host name cannot be empty.", "host");
if (port < 0 || port > 65535)
throw new ArgumentOutOfRangeException ("port");
CheckDisposed ();
if (IsConnected)
throw new InvalidOperationException ("The ImapClient is already connected.");
Stream stream;
bool starttls;
Uri uri;
ComputeDefaultValues (host, ref port, ref options, out uri, out starttls);
#if !NETFX_CORE
var ipAddresses = Dns.GetHostAddresses (host);
Socket socket = null;
for (int i = 0; i < ipAddresses.Length; i++) {
socket = new Socket (ipAddresses[i].AddressFamily, SocketType.Stream, ProtocolType.Tcp);
try {
cancellationToken.ThrowIfCancellationRequested ();
socket.Connect (ipAddresses[i], port);
break;
} catch (OperationCanceledException) {
socket.Dispose ();
throw;
} catch {
socket.Dispose ();
if (i + 1 == ipAddresses.Length)
throw;
}
}
if (socket == null)
throw new IOException (string.Format ("Failed to resolve host: {0}", host));
engine.Uri = uri;
if (options == SecureSocketOptions.SslOnConnect) {
var ssl = new SslStream (new NetworkStream (socket, true), false, ValidateRemoteCertificate);
ssl.AuthenticateAsClient (host, ClientCertificates, DefaultSslProtocols, true);
stream = ssl;
} else {
stream = new NetworkStream (socket, true);
}
#else
var protection = options == SecureSocketOptions.SslOnConnect ? SocketProtectionLevel.Tls12 : SocketProtectionLevel.PlainSocket;
socket = new StreamSocket ();
try {
cancellationToken.ThrowIfCancellationRequested ();
socket.ConnectAsync (new HostName (host), port.ToString (), protection)
.AsTask (cancellationToken)
.GetAwaiter ()
.GetResult ();
} catch {
socket.Dispose ();
socket = null;
throw;
}
stream = new DuplexStream (socket.InputStream.AsStreamForRead (0), socket.OutputStream.AsStreamForWrite (0));
engine.Uri = uri;
#endif
if (stream.CanTimeout) {
stream.WriteTimeout = timeout;
stream.ReadTimeout = timeout;
}
ProtocolLogger.LogConnect (uri);
engine.Connect (new ImapStream (stream, socket, ProtocolLogger), cancellationToken);
try {
// Only query the CAPABILITIES if the greeting didn't include them.
if (engine.CapabilitiesVersion == 0)
engine.QueryCapabilities (cancellationToken);
if (options == SecureSocketOptions.StartTls && (engine.Capabilities & ImapCapabilities.StartTLS) == 0)
throw new NotSupportedException ("The IMAP server does not support the STARTTLS extension.");
if (starttls && (engine.Capabilities & ImapCapabilities.StartTLS) != 0) {
var ic = engine.QueueCommand (cancellationToken, null, "STARTTLS\r\n");
engine.Wait (ic);
if (ic.Response == ImapCommandResponse.Ok) {
#if !NETFX_CORE
var tls = new SslStream (stream, false, ValidateRemoteCertificate);
tls.AuthenticateAsClient (host, ClientCertificates, DefaultSslProtocols, true);
engine.Stream.Stream = tls;
#else
socket.UpgradeToSslAsync (SocketProtectionLevel.Tls12, new HostName (host))
.AsTask (cancellationToken)
.GetAwaiter ()
.GetResult ();
#endif
// Query the CAPABILITIES again if the server did not include an
// untagged CAPABILITIES response to the STARTTLS command.
if (engine.CapabilitiesVersion == 1)
engine.QueryCapabilities (cancellationToken);
} else if (options == SecureSocketOptions.StartTls) {
throw ImapCommandException.Create ("STARTTLS", ic);
}
}
} catch {
engine.Disconnect ();
throw;
}
engine.Disconnected += OnEngineDisconnected;
OnConnected ();
}
/// <summary>
/// Establish a connection to the specified SMTP or SMTP/S server using the provided socket.
/// </summary>
/// <remarks>
/// <para>Establishes a connection to the specified SMTP or SMTP/S server.</para>
/// <para>If the <paramref name="port"/> has a value of <c>0</c>, then the
/// <paramref name="options"/> parameter is used to determine the default port to
/// connect to. The default port used with <see cref="SecureSocketOptions.SslOnConnect"/>
/// is <c>465</c>. All other values will use a default port of <c>25</c>.</para>
/// <para>If the <paramref name="options"/> has a value of
/// <see cref="SecureSocketOptions.Auto"/>, then the <paramref name="port"/> is used
/// to determine the default security options. If the <paramref name="port"/> has a value
/// of <c>465</c>, then the default options used will be
/// <see cref="SecureSocketOptions.SslOnConnect"/>. All other values will use
/// <see cref="SecureSocketOptions.StartTlsWhenAvailable"/>.</para>
/// <para>Once a connection is established, properties such as
/// <see cref="AuthenticationMechanisms"/> and <see cref="Capabilities"/> will be
/// populated.</para>
/// <para>Note: The connection established by any of the
/// <a href="Overload_MailKit_Net_Smtp_SmtpClient_Connect.htm">Connect</a>
/// methods may be re-used if an application wishes to send multiple messages
/// to the same SMTP server. Since connecting and authenticating can be expensive
/// operations, re-using a connection can significantly improve performance when
/// sending a large number of messages to the same SMTP server over a short
/// period of time.</para>
/// </remarks>
/// <param name="socket">The socket to use for the connection.</param>
/// <param name="host">The host name to connect to.</param>
/// <param name="port">The port to connect to. If the specified port is <c>0</c>, then the default port will be used.</param>
/// <param name="options">The secure socket options to when connecting.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <exception cref="System.ArgumentNullException">
/// <para><paramref name="socket"/> is <c>null</c>.</para>
/// <para>-or-</para>
/// <para><paramref name="host"/> is <c>null</c>.</para>
/// </exception>
/// <exception cref="System.ArgumentOutOfRangeException">
/// <paramref name="port"/> is not between <c>0</c> and <c>65535</c>.
/// </exception>
/// <exception cref="System.ArgumentException">
/// <para><paramref name="socket"/> is not connected.</para>
/// <para>-or-</para>
/// The <paramref name="host"/> is a zero-length string.
/// </exception>
/// <exception cref="System.ObjectDisposedException">
/// The <see cref="SmtpClient"/> has been disposed.
/// </exception>
/// <exception cref="System.InvalidOperationException">
/// The <see cref="SmtpClient"/> is already connected.
/// </exception>
/// <exception cref="System.NotSupportedException">
/// <paramref name="options"/> was set to
/// <see cref="MailKit.Security.SecureSocketOptions.StartTls"/>
/// and the SMTP server does not support the STARTTLS extension.
/// </exception>
/// <exception cref="System.OperationCanceledException">
/// The operation was canceled.
/// </exception>
/// <exception cref="System.IO.IOException">
/// An I/O error occurred.
/// </exception>
/// <exception cref="SmtpCommandException">
/// An SMTP command failed.
/// </exception>
/// <exception cref="SmtpProtocolException">
/// An SMTP protocol error occurred.
/// </exception>
public void Connect (Socket socket, string host, int port = 0, SecureSocketOptions options = SecureSocketOptions.Auto, CancellationToken cancellationToken = default (CancellationToken))
{
if (socket == null)
throw new ArgumentNullException ("socket");
if (!socket.Connected)
throw new ArgumentException ("The socket is not connected.", "socket");
if (host == null)
throw new ArgumentNullException ("host");
if (host.Length == 0)
throw new ArgumentException ("The host name cannot be empty.", "host");
if (port < 0 || port > 65535)
throw new ArgumentOutOfRangeException ("port");
CheckDisposed ();
if (IsConnected)
throw new InvalidOperationException ("The SmtpClient is already connected.");
capabilities = SmtpCapabilities.None;
AuthenticationMechanisms.Clear ();
MaxSize = 0;
SmtpResponse response;
Stream stream;
bool starttls;
Uri uri;
ComputeDefaultValues (host, ref port, ref options, out uri, out starttls);
this.host = host;
if (options == SecureSocketOptions.SslOnConnect) {
var ssl = new SslStream (new NetworkStream (socket, true), false, ValidateRemoteCertificate);
ssl.AuthenticateAsClient (host, ClientCertificates, SslProtocols, true);
stream = ssl;
} else {
stream = new NetworkStream (socket, true);
}
if (stream.CanTimeout) {
stream.WriteTimeout = timeout;
stream.ReadTimeout = timeout;
}
ProtocolLogger.LogConnect (uri);
Stream = new SmtpStream (stream, socket, ProtocolLogger);
try {
// read the greeting
response = Stream.ReadResponse (cancellationToken);
if (response.StatusCode != SmtpStatusCode.ServiceReady)
throw new SmtpCommandException (SmtpErrorCode.UnexpectedStatusCode, response.StatusCode, response.Response);
// Send EHLO and get a list of supported extensions
Ehlo (cancellationToken);
if (options == SecureSocketOptions.StartTls && (capabilities & SmtpCapabilities.StartTLS) == 0)
throw new NotSupportedException ("The SMTP server does not support the STARTTLS extension.");
if (starttls && (capabilities & SmtpCapabilities.StartTLS) != 0) {
response = SendCommand ("STARTTLS", cancellationToken);
if (response.StatusCode != SmtpStatusCode.ServiceReady)
throw new SmtpCommandException (SmtpErrorCode.UnexpectedStatusCode, response.StatusCode, response.Response);
var tls = new SslStream (stream, false, ValidateRemoteCertificate);
tls.AuthenticateAsClient (host, ClientCertificates, SslProtocols, true);
Stream.Stream = tls;
// Send EHLO again and get the new list of supported extensions
Ehlo (cancellationToken);
}
connected = true;
} catch {
Stream.Dispose ();
Stream = null;
throw;
}
OnConnected ();
}
/// <summary>
/// Establishes a connection to the specified SMTP or SMTP/S server.
/// </summary>
/// <remarks>
/// <para>Establishes a connection to the specified SMTP or SMTP/S server.</para>
/// <para>If the <paramref name="port"/> has a value of <c>0</c>, then the
/// <paramref name="options"/> parameter is used to determine the default port to
/// connect to. The default port used with <see cref="SecureSocketOptions.SslOnConnect"/>
/// is <c>465</c>. All other values will use a default port of <c>25</c>.</para>
/// <para>If the <paramref name="options"/> has a value of
/// <see cref="SecureSocketOptions.Auto"/>, then the <paramref name="port"/> is used
/// to determine the default security options. If the <paramref name="port"/> has a value
/// of <c>465</c>, then the default options used will be
/// <see cref="SecureSocketOptions.SslOnConnect"/>. All other values will use
/// <see cref="SecureSocketOptions.StartTlsWhenAvailable"/>.</para>
/// <para>Once a connection is established, properties such as
/// <see cref="AuthenticationMechanisms"/> and <see cref="Capabilities"/> will be
/// populated.</para>
/// <para>Note: The connection established by any of the
/// <a href="Overload_MailKit_Net_Smtp_SmtpClient_Connect.htm">Connect</a>
/// methods may be re-used if an application wishes to send multiple messages
/// to the same SMTP server. Since connecting and authenticating can be expensive
/// operations, re-using a connection can significantly improve performance when
/// sending a large number of messages to the same SMTP server over a short
/// period of time.</para>
/// </remarks>
/// <example>
/// <code language="c#" source="Examples\SmtpExamples.cs" region="SendMessage"/>
/// </example>
/// <param name="host">The host name to connect to.</param>
/// <param name="port">The port to connect to. If the specified port is <c>0</c>, then the default port will be used.</param>
/// <param name="options">The secure socket options to when connecting.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <exception cref="System.ArgumentNullException">
/// <paramref name="host"/> is <c>null</c>.
/// </exception>
/// <exception cref="System.ArgumentOutOfRangeException">
/// <paramref name="port"/> is not between <c>0</c> and <c>65535</c>.
/// </exception>
/// <exception cref="System.ArgumentException">
/// The <paramref name="host"/> is a zero-length string.
/// </exception>
/// <exception cref="System.ObjectDisposedException">
/// The <see cref="SmtpClient"/> has been disposed.
/// </exception>
/// <exception cref="System.InvalidOperationException">
/// The <see cref="SmtpClient"/> is already connected.
/// </exception>
/// <exception cref="System.NotSupportedException">
/// <paramref name="options"/> was set to
/// <see cref="MailKit.Security.SecureSocketOptions.StartTls"/>
/// and the SMTP server does not support the STARTTLS extension.
/// </exception>
/// <exception cref="System.OperationCanceledException">
/// The operation was canceled.
/// </exception>
/// <exception cref="System.IO.IOException">
/// An I/O error occurred.
/// </exception>
/// <exception cref="SmtpCommandException">
/// An SMTP command failed.
/// </exception>
/// <exception cref="SmtpProtocolException">
/// An SMTP protocol error occurred.
/// </exception>
public override void Connect (string host, int port = 0, SecureSocketOptions options = SecureSocketOptions.Auto, CancellationToken cancellationToken = default (CancellationToken))
{
if (host == null)
throw new ArgumentNullException ("host");
if (host.Length == 0)
throw new ArgumentException ("The host name cannot be empty.", "host");
if (port < 0 || port > 65535)
throw new ArgumentOutOfRangeException ("port");
CheckDisposed ();
if (IsConnected)
throw new InvalidOperationException ("The SmtpClient is already connected.");
capabilities = SmtpCapabilities.None;
AuthenticationMechanisms.Clear ();
MaxSize = 0;
SmtpResponse response;
Stream stream;
bool starttls;
Uri uri;
ComputeDefaultValues (host, ref port, ref options, out uri, out starttls);
#if !NETFX_CORE
var ipAddresses = Dns.GetHostAddresses (host);
Socket socket = null;
for (int i = 0; i < ipAddresses.Length; i++) {
socket = new Socket (ipAddresses[i].AddressFamily, SocketType.Stream, ProtocolType.Tcp);
try {
cancellationToken.ThrowIfCancellationRequested ();
if (LocalEndPoint != null)
socket.Bind (LocalEndPoint);
socket.Connect (ipAddresses[i], port);
break;
} catch (OperationCanceledException) {
socket.Dispose ();
socket = null;
throw;
} catch {
socket.Dispose ();
socket = null;
if (i + 1 == ipAddresses.Length)
throw;
}
}
if (socket == null)
throw new IOException (string.Format ("Failed to resolve host: {0}", host));
this.host = host;
if (options == SecureSocketOptions.SslOnConnect) {
var ssl = new SslStream (new NetworkStream (socket, true), false, ValidateRemoteCertificate);
ssl.AuthenticateAsClient (host, ClientCertificates, SslProtocols, true);
stream = ssl;
} else {
stream = new NetworkStream (socket, true);
}
#else
var protection = options == SecureSocketOptions.SslOnConnect ? SocketProtectionLevel.Tls12 : SocketProtectionLevel.PlainSocket;
var socket = new StreamSocket ();
try {
cancellationToken.ThrowIfCancellationRequested ();
socket.ConnectAsync (new HostName (host), port.ToString (), protection)
.AsTask (cancellationToken)
.GetAwaiter ()
.GetResult ();
} catch {
socket.Dispose ();
throw;
}
stream = new DuplexStream (socket.InputStream.AsStreamForRead (0), socket.OutputStream.AsStreamForWrite (0));
#endif
if (stream.CanTimeout) {
stream.WriteTimeout = timeout;
stream.ReadTimeout = timeout;
}
ProtocolLogger.LogConnect (uri);
Stream = new SmtpStream (stream, socket, ProtocolLogger);
try {
// read the greeting
response = Stream.ReadResponse (cancellationToken);
if (response.StatusCode != SmtpStatusCode.ServiceReady)
throw new SmtpCommandException (SmtpErrorCode.UnexpectedStatusCode, response.StatusCode, response.Response);
// Send EHLO and get a list of supported extensions
Ehlo (cancellationToken);
if (options == SecureSocketOptions.StartTls && (capabilities & SmtpCapabilities.StartTLS) == 0)
throw new NotSupportedException ("The SMTP server does not support the STARTTLS extension.");
if (starttls && (capabilities & SmtpCapabilities.StartTLS) != 0) {
response = SendCommand ("STARTTLS", cancellationToken);
if (response.StatusCode != SmtpStatusCode.ServiceReady)
throw new SmtpCommandException (SmtpErrorCode.UnexpectedStatusCode, response.StatusCode, response.Response);
#if !NETFX_CORE
var tls = new SslStream (stream, false, ValidateRemoteCertificate);
tls.AuthenticateAsClient (host, ClientCertificates, SslProtocols, true);
Stream.Stream = tls;
#else
socket.UpgradeToSslAsync (SocketProtectionLevel.Tls12, new HostName (host))
.AsTask (cancellationToken)
.GetAwaiter ()
.GetResult ();
#endif
// Send EHLO again and get the new list of supported extensions
Ehlo (cancellationToken);
}
connected = true;
} catch {
Stream.Dispose ();
Stream = null;
throw;
}
OnConnected ();
}
static void ComputeDefaultValues (string host, ref int port, ref SecureSocketOptions options, out Uri uri, out bool starttls)
{
switch (options) {
default:
if (port == 0)
port = 25;
break;
case SecureSocketOptions.Auto:
switch (port) {
case 0: port = 25; goto default;
case 465: options = SecureSocketOptions.SslOnConnect; break;
default: options = SecureSocketOptions.StartTlsWhenAvailable; break;
}
break;
case SecureSocketOptions.SslOnConnect:
if (port == 0)
port = 465;
break;
}
switch (options) {
case SecureSocketOptions.StartTlsWhenAvailable:
uri = new Uri ("smtp://" + host + ":" + port + "/?starttls=when-available");
starttls = true;
break;
case SecureSocketOptions.StartTls:
uri = new Uri ("smtp://" + host + ":" + port + "/?starttls=always");
starttls = true;
break;
case SecureSocketOptions.SslOnConnect:
uri = new Uri ("smtps://" + host + ":" + port);
starttls = false;
break;
default:
uri = new Uri ("smtp://" + host + ":" + port);
starttls = false;
break;
}
}
/// <summary>
/// Establish a connection to the specified IMAP or IMAP/S server using the provided socket.
/// </summary>
/// <remarks>
/// <para>Establishes a connection to the specified IMAP or IMAP/S server using
/// the provided socket.</para>
/// <para>If the <paramref name="port"/> has a value of <c>0</c>, then the
/// <paramref name="options"/> parameter is used to determine the default port to
/// connect to. The default port used with <see cref="SecureSocketOptions.SslOnConnect"/>
/// is <c>993</c>. All other values will use a default port of <c>143</c>.</para>
/// <para>If the <paramref name="options"/> has a value of
/// <see cref="SecureSocketOptions.Auto"/>, then the <paramref name="port"/> is used
/// to determine the default security options. If the <paramref name="port"/> has a value
/// of <c>993</c>, then the default options used will be
/// <see cref="SecureSocketOptions.SslOnConnect"/>. All other values will use
/// <see cref="SecureSocketOptions.StartTlsWhenAvailable"/>.</para>
/// <para>Once a connection is established, properties such as
/// <see cref="AuthenticationMechanisms"/> and <see cref="Capabilities"/> will be
/// populated.</para>
/// </remarks>
/// <param name="socket">The socket to use for the connection.</param>
/// <param name="host">The host name to connect to.</param>
/// <param name="port">The port to connect to. If the specified port is <c>0</c>, then the default port will be used.</param>
/// <param name="options">The secure socket options to when connecting.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <exception cref="System.ArgumentNullException">
/// <para><paramref name="socket"/> is <c>null</c>.</para>
/// <para>-or-</para>
/// <para><paramref name="host"/> is <c>null</c>.</para>
/// </exception>
/// <exception cref="System.ArgumentOutOfRangeException">
/// <paramref name="port"/> is not between <c>0</c> and <c>65535</c>.
/// </exception>
/// <exception cref="System.ArgumentException">
/// <para><paramref name="socket"/> is not connected.</para>
/// <para>-or-</para>
/// The <paramref name="host"/> is a zero-length string.
/// </exception>
/// <exception cref="System.ObjectDisposedException">
/// The <see cref="ImapClient"/> has been disposed.
/// </exception>
/// <exception cref="System.InvalidOperationException">
/// The <see cref="ImapClient"/> is already connected.
/// </exception>
/// <exception cref="System.NotSupportedException">
/// <paramref name="options"/> was set to
/// <see cref="MailKit.Security.SecureSocketOptions.StartTls"/>
/// and the IMAP server does not support the STARTTLS extension.
/// </exception>
/// <exception cref="System.OperationCanceledException">
/// The operation was canceled via the cancellation token.
/// </exception>
/// <exception cref="System.IO.IOException">
/// An I/O error occurred.
/// </exception>
/// <exception cref="ImapProtocolException">
/// An IMAP protocol error occurred.
/// </exception>
public void Connect (Socket socket, string host, int port = 0, SecureSocketOptions options = SecureSocketOptions.Auto, CancellationToken cancellationToken = default (CancellationToken))
{
if (socket == null)
throw new ArgumentNullException ("socket");
if (!socket.Connected)
throw new ArgumentException ("The socket is not connected.", "socket");
if (host == null)
throw new ArgumentNullException ("host");
if (host.Length == 0)
throw new ArgumentException ("The host name cannot be empty.", "host");
if (port < 0 || port > 65535)
throw new ArgumentOutOfRangeException ("port");
CheckDisposed ();
if (IsConnected)
throw new InvalidOperationException ("The ImapClient is already connected.");
Stream stream;
bool starttls;
Uri uri;
ComputeDefaultValues (host, ref port, ref options, out uri, out starttls);
engine.Uri = uri;
if (options == SecureSocketOptions.SslOnConnect) {
var ssl = new SslStream (new NetworkStream (socket, true), false, ValidateRemoteCertificate);
ssl.AuthenticateAsClient (host, ClientCertificates, DefaultSslProtocols, true);
stream = ssl;
} else {
stream = new NetworkStream (socket, true);
}
if (stream.CanTimeout) {
stream.WriteTimeout = timeout;
stream.ReadTimeout = timeout;
}
ProtocolLogger.LogConnect (uri);
engine.Connect (new ImapStream (stream, socket, ProtocolLogger), cancellationToken);
try {
// Only query the CAPABILITIES if the greeting didn't include them.
if (engine.CapabilitiesVersion == 0)
engine.QueryCapabilities (cancellationToken);
if (options == SecureSocketOptions.StartTls && (engine.Capabilities & ImapCapabilities.StartTLS) == 0)
throw new NotSupportedException ("The IMAP server does not support the STARTTLS extension.");
if (starttls && (engine.Capabilities & ImapCapabilities.StartTLS) != 0) {
var ic = engine.QueueCommand (cancellationToken, null, "STARTTLS\r\n");
engine.Wait (ic);
if (ic.Response == ImapCommandResponse.Ok) {
var tls = new SslStream (stream, false, ValidateRemoteCertificate);
tls.AuthenticateAsClient (host, ClientCertificates, DefaultSslProtocols, true);
engine.Stream.Stream = tls;
// Query the CAPABILITIES again if the server did not include an
// untagged CAPABILITIES response to the STARTTLS command.
if (engine.CapabilitiesVersion == 1)
engine.QueryCapabilities (cancellationToken);
} else if (options == SecureSocketOptions.StartTls) {
throw ImapCommandException.Create ("STARTTLS", ic);
}
}
} catch {
engine.Disconnect ();
throw;
}
engine.Disconnected += OnEngineDisconnected;
OnConnected ();
}