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# ``twisted`.`mail`.`imap4`.`_RFC822MessageStructure``

class documentation

`class _RFC822MessageStructure(_SinglepartMessageStructure): (source)`

Constructor: `_RFC822MessageStructure(message, main, subtype, attrs)`

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`_RFC822MessageStructure` represents the message structure of a message/rfc822 message.

Method | `encode` | A body type of type MESSAGE and subtype RFC822 contains, immediately after the basic fields, the envelope structure, body structure, and size in text lines of the encapsulated message.

Inherited from `_SinglepartMessageStructure`:

Method | `__init__` | No summary
Instance Variable | `attrs` | Undocumented
Instance Variable | `main` | Undocumented
Instance Variable | `subtype` | Undocumented
Method | `_basicFields` | Return a list of the basic fields for a single-part message.
Method | `_extended` | The extension data of a non-multipart body part are in the following order:
Constant | `_HEADERS` | Undocumented

Inherited from `_MessageStructure` (via `_SinglepartMessageStructure`):

Instance Variable | `message` | Undocumented
Method | `_disposition` | Parse a Content-Disposition header into a two-sequence of the disposition and a flattened list of its parameters.
Method | `_unquotedAttrs` | No summary

def encode(self, extended): (source)
overrides `twisted.mail.imap4._SinglepartMessageStructure.encode`

A body type of type MESSAGE and subtype RFC822 contains, immediately after the basic fields, the envelope structure, body structure, and size in text lines of the encapsulated message.