smtpconstants

Documentation

Index

• Constants
• Variables
• type SmtpCommand
  • func GetCommandFromString(input string) (SmtpCommand, error)
  • func (this SmtpCommand) String() string
• type SmtpWorkerState

Constants

const (
	SMTP_CRLF                   string = "\r\n"
	SMTP_DATA_TERMINATOR        string = "\r\n.\r\n"
	SMTP_WELCOME_MESSAGE        string = "220 Welcome to MailSlurper!"
	SMTP_CLOSING_MESSAGE        string = "221 Bye"
	SMTP_OK_MESSAGE             string = "250 Ok"
	SMTP_DATA_RESPONSE_MESSAGE  string = "354 End data with <CR><LF>.<CR><LF>"
	SMTP_HELLO_RESPONSE_MESSAGE string = "250 Hello. How very nice to meet you!"
)

const (
	SMTP_WORKER_IDLE    SmtpWorkerState = 0
	SMTP_WORKER_WORKING SmtpWorkerState = 1
	SMTP_WORKER_DONE    SmtpWorkerState = 100
	SMTP_WORKER_ERROR   SmtpWorkerState = 101

	RECEIVE_BUFFER_LEN        = 1024
	CONN_TIMEOUT_MILLISECONDS = 5
	COMMAND_TIMEOUT_SECONDS   = 5
)

Variables

var SmtpCommands = map[string]SmtpCommand{
	"helo":      HELO,
	"ehlo":      HELO,
	"rcpt to":   RCPT,
	"mail from": MAIL,
	"send":      MAIL,
	"rset":      RSET,
	"quit":      QUIT,
	"data":      DATA,
}

This is a command map of SMTP command strings to their int representation. This is primarily used because there can be more than one command to do the same things. For example, a client can send "helo" or "ehlo" to initiate the handshake.

var SmtpCommandsToStrings = map[SmtpCommand]string{
	HELO: "HELO",
	RCPT: "RCPT TO",
	MAIL: "SEND",
	RSET: "RSET",
	QUIT: "QUIT",
	DATA: "DATA",
}

Friendly string representations of commands. Useful in error reporting.

Types

type SmtpCommand

type SmtpCommand int

const (
	NONE SmtpCommand = iota
	RCPT SmtpCommand = iota
	MAIL SmtpCommand = iota
	HELO SmtpCommand = iota
	RSET SmtpCommand = iota
	DATA SmtpCommand = iota
	QUIT SmtpCommand = iota
)

Constants representing the commands that an SMTP client will send during the course of communicating with our server.

func GetCommandFromString

func GetCommandFromString(input string) (SmtpCommand, error)

Takes a string and returns the integer command representation. For example if the string contains "DATA" then the value 1 (the constant DATA) will be returned.

func (SmtpCommand) String

func (this SmtpCommand) String() string

Returns the string representation of a command.

type SmtpWorkerState

type SmtpWorkerState int