#### 3.3.1 Tuning the HTTP parser

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 variable `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).