[MEDIUM] add ability to connect to a server from an IP found in a header
Using get_ip_from_hdr2() we can look for occurrence #X or #-X and
extract the IP it contains. This is typically designed for use with
the X-Forwarded-For header.
Using "usesrc hdr_ip(name,occ)", it becomes possible to use the IP address
found in <name>, and possibly specify occurrence number <occ>, as the
source to connect to a server. This is possible both in a server and in
a backend's source statement. This is typically used to use the source
IP previously set by a upstream proxy.
diff --git a/include/common/defaults.h b/include/common/defaults.h
index 7746a98..845319d 100644
--- a/include/common/defaults.h
+++ b/include/common/defaults.h
@@ -63,6 +63,11 @@
#define MAX_HTTP_HDR ((BUFSIZE+79)/80)
#endif
+// max # of headers in history when looking for header #-X
+#ifndef MAX_HDR_HISTORY
+#define MAX_HDR_HISTORY 10
+#endif
+
// max # of loops we can perform around a read() which succeeds.
// It's very frequent that the system returns a few TCP segments at a time.
#ifndef MAX_READ_POLL_LOOPS