As a number of HTTP servers and CGI scripts serve incorrect HTTP
headers, Polipo uses a lax parser, meaning that incorrect HTTP
headers will be ignored (a warning will be logged by default). If the
laxHttpParser is not set (it is set by default),
Polipo will use a strict parser, and refuse to serve an
instance unless it could parse all the headers.
When the amount of headers exceeds one chunk’s worth (see Chunk memory), Polipo will allocate a big buffer in order to store
the headers. The size of big buffers, and therefore the maximum
amount of headers Polipo can parse, is specified by the variable
bigBufferSize (32kB by default).