How long will the proxy wait before timing out when communicating to a device

Products

ProxySG Software - SGOS

Issue/Introduction

The proxy times-out when communicating to a server that is known to take a long time to respond to a particular request. What is the default timeout value for the proxy communicating to a device and can this value be changed?

Resolution

The 'show http' console command will display various settings for the HTTP proxy service.

Proxy>show http
			Supported protocol version: HTTP version preserved
			Caching options:
			  Cache authenticated data: enabled
			  Cache expired objects:    enabled
			  Cache personal pages:     disabled
			  Strip From Headers:       disabled
			  Byte range support:       enabled
			  Force NTLM on proxy IE:   disabled
			  Rewrite redirects for XP: disabled
			  Revalidate "pragma: no-cache":    disabled
			  WWW redirect if host not found:   enabled
			Force explicit expirations:
			  Never refresh before:     disabled
			  Never serve after:        disabled
			Add headers:
			  "Front-end-https":        disabled
			  "Via":                    disabled
			  "X-forwarded-for":        disabled
			  "Client-ip":              disabled
			Parsing options:
			  HTML meta tag "Cache-Control":    enabled
			  HTML meta tag "Expires":          enabled
			  HTML meta tag "Pragma: no-cache": enabled
			Persistent connections:
			  Client connections:       enabled
			  Server connections:       enabled
			Clientless request:
			  Global limit:               200
			  Pipeline limit:             5
			  Server limit:               50
			Pipeline:
			  Client requests:          enabled
			  Client redirects:         enabled
			  Prefetch requests:        enabled
			  Prefetch redirects:       enabled
			Substitute simple Get for:
			  Get "if-modified-since":  disabled
			  Get "pragma: no-cache":   disabled
			  HTTP 1.1 Conditional get: disabled
			  Internet Explorer reload: disabled
			Proprietary header extensions:
			  Blue Coat extensions:     disabled
			FTP proxy:
			  Url path is:              absolute from root
			Configuration/access log uploads: will use PASV
			Persistent connection timeouts:
			  Server:                   900
			  Client:                   360
			Receive timeouts:
			  Server:                   180
			  Client:                   120
			  Refresh:                  90
			tolerant-request-parsing: disabled
			location-header-rewrite: disabled
			exception-on-network-error: enabled

The 'Receive timeouts' values identify the default time (in seconds) for each type of proxy connection.

Timeout	Meaning	CPL command
Server	Connections between the proxy and the web server	http.server.recv.timeout( )
Client	Connections between the proxy and the client make the request	http.client.recv.timeout( )
Refresh	Clientless connections, e.g. the proxy connecting to a web server to refresh its' cache	http.refresh.recv.timeout( )

These values can be changed using policy on a per-site, per-URL or per-client basis, e.g.

<proxy>
    server_url.domain="www.website.com" http.server.recv.timeout(300)
    url.domain="http://www.website.com/slow-response.html" http.server.recv.timeout(600)
    client.address=1.2.3.4 http.client.recv.timeout(240)