There may be a proxy, check below. IP address: 40.77.167.171. msnbot-40-77-167-171.search.msn.com. Best guess: United States, Virginia, Boydton. The HTTP_CACHE_CONTROL header exists, and is non zero. This may indicate a caching proxy. The header HTTP_CACHE_CONTROL includes proxy telltales.

php - What is the best way to detect if a proxy server is I'm trying to write a tool to check if a proxy server is up and available for use. So far, I've come up with two methods in the class below (I've removed setters and getters that are superfluous to this question). Proxy server test Proxy checker (proxy tester) verifies availability and the anonymity level of the specified proxy server.Both SOCKS5 and HTTP proxies are supported. Proxy servers differ in the level of anonymity they provide. Transparent proxy server provides no anonymity since client's IP address is sent in HTTP headers.Anonymous proxy server provides significant by not sending client IP address in HTTP Check server: Check host - online website monitoring

Semi-Private Proxy for everyone | SquidProxy.org

proxycfg -p proxy_server. Example 3: Use a different proxy for secure resources. The following example specifies that HTTP servers are accessed through the http_proxy proxy and HTTPS servers are accessed through https_proxy. Local intranet sites and any site in the *.microsoft.com domain bypass the proxy.

There may be a proxy, check below. IP address: 40.77.167.171. msnbot-40-77-167-171.search.msn.com. Best guess: United States, Virginia, Boydton. The HTTP_CACHE_CONTROL header exists, and is non zero. This may indicate a caching proxy. The header HTTP_CACHE_CONTROL includes proxy telltales.