lexit.sh

flex -8iCr <<-eof
     int fileno (FILE *);
    xa "\15"|"\12"
    xb "\15\12"
    %option noyywrap nounput noinput
    %%
    ^[A-Fa-f0-9]+{xa}
    {xa}+[A-Fa-f0-9]+{xa}
    {xb}[A-Fa-f0-9]+{xb}
    %%
    int main(){ yylex();exit(0);}
    eof

yy=yy045
cc -std=c89 -Wall -pipe lex.yy.c -static -o ${yy}

printf 'GET / HTTP/1.1\r\nHost: '${1}'\r\nConnection: close\r\n\r\n'|openssl s_client -connect ${1}:443 -ign_eof|./${yy}

rm lex.yy.c ${yy}