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+
+From marcs@znep.com Fri Apr 17 15:16:16 1998
+Date: Sat, 22 Nov 1997 20:44:10 -0700 (MST)
+From: Marc Slemko <marcs@znep.com>
+To: TLOSAP <new-httpd@apache.org>
+Subject: Re: Getting ethernet packets content under FreeBSD? (fwd)
+Reply-To: new-httpd@apache.org
+
+Anyone too lazy to hack tcpdump (eg. my tcpdump has a -X option to display
+the data in ASCII) can use something like the below to grab HTTP headers
+when debugging broken clients.
+
+Nothing complicated, but handy.
+
+---------- Forwarded message ----------
+Date: Sat, 22 Nov 1997 14:35:23 PST
+From: Bill Fenner <fenner@parc.xerox.com>
+To: Nate Williams <nate@mt.sri.com>
+Cc: bmah@ca.sandia.gov, hackers@FreeBSD.ORG
+Subject: Re: Getting ethernet packets content under FreeBSD?
+
+I usually just use this perl script, which I call "tcpdumpscii".
+Then run "tcpdumpscii -s 1500 -x [other tcpdump args]".
+
+ Bill
+
+#!/import/misc/bin/perl
+#
+#
+open(TCPDUMP,"tcpdump -l @ARGV|");
+while (<TCPDUMP>) {
+ if (/^\s+(\S\S)+/) {
+ $sav = $_;
+ $asc = "";
+ while (s/\s*(\S\S)\s*//) {
+ $i = hex($1);
+ if ($i < 32 || $i > 126) {
+ $asc .= ".";
+ } else {
+ $asc .= pack(C,hex($1));
+ }
+ }
+ $foo = "." x length($asc);
+ $_ = $sav;
+ s/\t/ /g;
+ s/^$foo/$asc/;
+ }
+ print;
+}
+