NimbostratusHi
I use the HTTP monitor like this... GET /A/B/C.html HTTP/1.1\r\nHost: \r\nConnection: close\r\n\r\n
Almost server's state is UP
But someone is DOWN...
And I modify the send string like this... GET /A/B/C.html \r\n\r\n
After modify it, server's state change UP!!
What is the reason that not set the "host" in send string.
Plz help me.
CirrusIn HTTP v 1.1 is Host header mandatory. It is used for resolution destination web server (like the virtual host on apache, or server behind a reverse proxy,...).
NimbostratusI found this article.
Note: HTTP/1.1 requires the Host header to be present in the request but does not require the header to contain a value. If you do not have a specific host name on your server, a value of Host: suffices in most cases. A null value is valid unless the HTTP server requires them for virtual hosting.
(https://support.f5.com/csp/article/K3224)
So, I want to know the reason of different result by using HOST and NULL HOST.