Module smtp

This module implements the SMTP client protocol as specified by RFC 5321, this can be used to send mail to any SMTP Server.

This module also implements the protocol used to format messages, as specified by RFC 2822.

Example gmail use:

var msg = createMessage("Hello from Nim's SMTP",
                        "Hello!.\n Is this awesome or what?",
                        @["[email protected]"])
let smtpConn = newSmtp(useSsl = true, debug=true)
smtpConn.connect("smtp.gmail.com", Port 465)
smtpConn.auth("username", "password")
smtpConn.sendmail("[email protected]", @["[email protected]"], $msg)

For SSL support this module relies on OpenSSL. If you want to enable SSL, compile with -d:ssl.

Imports

net, strutils, strtabs, base64, os, asyncnet, asyncdispatch, parsecfg

Types

Message = object
  msgTo: seq[string]
  msgCc: seq[string]
  msgSubject: string
  msgOtherHeaders: StringTableRef
  msgBody: string

ReplyError = object of IOError

Smtp = SmtpBase[Socket]

AsyncSmtp = SmtpBase[AsyncSocket]

Procs

proc createMessage(mSubject, mBody: string; mTo, mCc: seq[string];
                  otherHeaders: openArray[tuple[name, value: string]]): Message {.
    raises: [], tags: [].}

Creates a new MIME compliant message.

proc createMessage(mSubject, mBody: string; mTo, mCc: seq[string] = @ []): Message {.
    raises: [], tags: [].}

Alternate version of the above.

proc `$`(msg: Message): string {.raises: [], tags: [].}

stringify for Message.

proc newSmtp(useSsl = false; debug = false; sslContext = defaultSslContext): Smtp {.
    raises: [OSError, SslError], tags: [].}

Creates a new Smtp instance.

proc newAsyncSmtp(useSsl = false; debug = false; sslContext = defaultSslContext): AsyncSmtp {.
    raises: [OSError, Exception, SslError], tags: [RootEffect].}

Creates a new AsyncSmtp instance.

proc connect(smtp: AsyncSmtp; address: string; port: Port): Future[void] {.
    raises: [FutureError], tags: [RootEffect].}

Establishes a connection with a SMTP server. May fail with ReplyError or with a socket error.

proc connect(smtp: Smtp; address: string; port: Port) {.
    raises: [OSError, SslError, TimeoutError, ReplyError],
    tags: [ReadIOEffect, TimeEffect, WriteIOEffect].}

Establishes a connection with a SMTP server. May fail with ReplyError or with a socket error.

proc auth(smtp: AsyncSmtp; username, password: string): Future[void] {.
    raises: [FutureError], tags: [RootEffect].}

Sends an AUTH command to the server to login as the username using password. May fail with ReplyError.

proc auth(smtp: Smtp; username, password: string) {.
    raises: [SslError, OSError, TimeoutError, ReplyError],
    tags: [WriteIOEffect, ReadIOEffect, TimeEffect].}

Sends an AUTH command to the server to login as the username using password. May fail with ReplyError.

proc sendMail(smtp: AsyncSmtp; fromAddr: string; toAddrs: seq[string]; msg: string): Future[
    void] {.raises: [FutureError], tags: [RootEffect].}

Sends msg from fromAddr to the addresses specified in toAddrs. Messages may be formed using createMessage by converting the Message into a string.

proc sendMail(smtp: Smtp; fromAddr: string; toAddrs: seq[string]; msg: string) {.
    raises: [SslError, OSError, TimeoutError, ReplyError],
    tags: [WriteIOEffect, ReadIOEffect, TimeEffect].}

Sends msg from fromAddr to the addresses specified in toAddrs. Messages may be formed using createMessage by converting the Message into a string.

proc close(smtp: AsyncSmtp): Future[void] {.raises: [FutureError], tags: [RootEffect].}

Disconnects from the SMTP server and closes the socket.

proc close(smtp: Smtp) {.raises: [SslError, OSError], tags: [WriteIOEffect].}

Disconnects from the SMTP server and closes the socket.