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http: allow raw header capture #347

Merged
merged 1 commit into from
Apr 14, 2022

Commits on Apr 13, 2022

  1. http: allow raw header capture

    The golang textproto library does a few things when parsing the HTTP
    headers:
    
    * consume some whitespace characters (e.g. \r\n)
    * canonicalizes the header keys (e.g. "content-type" => "Content-Type")
    * moves the headers into a map
    
    This all makes sense when parsing HTTP, but for a scanner some may want
    to have the exact headers, to match on order, non-canonical keys, etc.
    
    This adds that option, if '--raw-headers' is specified during an HTTP
    scan.  This is accomplished by implementing a tee reader on the pconn
    interface, that tees before the bufio reader is put in place.  The
    tee copy can be disabled once the headers have been read, so as to not
    waste memory while consuming the HTTP body.
    
    While denoted as "raw headers", this will also capture the raw status
    line as well.
    codyprime committed Apr 13, 2022
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