@spec binary_body(binary(), headers()) :: t()

Builds a Part with a binary body.

Set the content_length of the Part to the length of the binary.

@spec file_body(String.t(), headers()) :: t()

Builds a Part with a streaming file body.

Set the content_length of the Part to the size of the file on disk, as inspected with File.stat.

@spec file_field(String.t(), name(), headers(), Keyword.t()) :: t()

Builds a form-data Part with a streaming file body.

Takes the following Keyword options in opts:

• filename: controls the inclusion of the filename="foo" directive in the content-disposition header. Defaults to true, which uses the filename from the path on disk. Pass in a String to override this, or set to false to disable this directive.

• content_type: controls the inclusion of the content-type header. Defaults to true which will use MIME.from_path/1 to detect the mime type of the file. Pass in a String to override this, or set to false to disable this header.

@spec stream_body(Enum.t(), headers()) :: t()

Builds a Part with a Stream body.

Because the length of the Stream cannot be known up front it doesn't define the content_length. This will cause Multipart.content_length/1 to error unless you set the content_length manually in the struct.

@spec stream_field(Enum.t(), name(), headers()) :: t()

Builds a form-data Part with a streaming body.

@spec text_field(binary(), name(), headers()) :: t()

Builds a form-data Part with a text body.