| Accept | Holds list of content types that will be accepted. |
| AcceptEncoding | Holds list of content-encoding types that will be accepted.
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| AcceptLanguage | Holds list of languages which are preferable in the response.
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| Body | Holds request body. |
| Charset | Character set to use for text conversion. |
| Cookies | Holds request cookies.
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| Filename | Holds filename where body is stored. |
| FormPost | Reference to form post fields.
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| FormUpload | Reference to form upload variables.
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| Headers | Reference to header fields.
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| IfModifiedSince | Holds date for conditional request of the document. |
| Method | Holds method that was used. |
| Pragma | Holds directive that should be understood by the server, if relevant. |
| Referer | Holds URI of the document from which destination URI was obtained.
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| Resume | Determines if wodHttpDLX will try to resume downloads. |
| Tag | Tag for misc usage. |
| URI | Holds URI of resource that should be fetched.
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| UserAgent | Holds software program name presented to the server. |