Lighttpd

When dealing with a SOAP server written in perl using SOAP::Lite, I was experiencing problems that I later traced to a header parsing problem within lighttpd's mod_fastcgi. According to RFC 2616 (section 19.3):

"The line terminator for message-header fields is the sequence CRLF.
   However, we recommend that applications, when parsing such headers,
   recognize a single LF as a line terminator and ignore the leading CR."

SOAP::Lite was using "LF" between headers, and "CRLF" at the end of the header section (has now been fixed as of release 0.65beta3, using "CRLF" as header seperator). This was resulting as a "LFCRLF" sequence at the end of the header section. Since lighttpd's mod_fastcgi is searching for either "CRLFCRLF" or "LFLF" as the header section delimiter, that was causing a problem in this case.

May I suggest adding a test for "LFCRLF" to cope for such possible implementations?

The code is in mod_fastcgi.c, around line 2245 (as seen below):

if (NULL != (c = buffer_search_string_len(hctx->response_header, CONST_STR_LEN("\r\n\r\n")))) {
   blen = hctx->response_header->used - (c - hctx->response_header->ptr) - 4;
   hctx->response_header->used = (c - hctx->response_header->ptr) + 3;
   c += 4; /* point the the start of the response */
} else if (NULL != (c = buffer_search_string_len(hctx->response_header, CONST_STR_LEN("\n\n")))) {
   blen = hctx->response_header->used - (c - hctx->response_header->ptr) - 2;
   hctx->response_header->used = c - hctx->response_header->ptr + 2;
   c += 2; /* point the the start of the response */
} else {
   /* no luck, no header found */
   break;
}

-- marc