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The HTTP 1.1 spec which requires the last header be followed by two CRLF sequences.

Jep. From RFC 2616
Request (section 5) and Response (section 6) messages use the generic + message format of RFC 822 [9] for transferring entities (the payload + of the message). Both types of message consist of a start-line, zero + or more header fields (also known as "headers"), an empty line (i.e. +, a line with nothing preceding the CRLF) indicating the end of the h +eader fields, and possibly a message-body. generic-message = start-line *(message-header CRLF) CRLF [ message-body ] start-line = Request-Line | Status-Line
In short, the header is terminated by an empty line. Maybe I'm missing the point, but that's exactly what I get with:

print "$lastlineofheader\n\n;"

In reply to Re^2: CGI: newlines, write exactly "\r\n" to end the headers, then turn off binmode by rizzo
in thread CGI: newlines, write exactly "\r\n" to end the headers, then turn off binmode by 7stud

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