package httpproxy

Import Path
	vendor/ (on

Dependency Relation
	imports 8 packages, and imported by one package

Involved Source Files Package httpproxy provides support for HTTP proxy determination based on environment variables, as provided by net/http's ProxyFromEnvironment function. The API is not subject to the Go 1 compatibility promise and may change at any time.
Package-Level Type Names (total 7, in which 1 is exported)
/* sort exporteds by: | */
Config holds configuration for HTTP proxy settings. See FromEnvironment for details. CGI holds whether the current process is running as a CGI handler (FromEnvironment infers this from the presence of a REQUEST_METHOD environment variable). When this is set, ProxyForURL will return an error when HTTPProxy applies, because a client could be setting HTTP_PROXY maliciously. See HTTPProxy represents the value of the HTTP_PROXY or http_proxy environment variable. It will be used as the proxy URL for HTTP requests unless overridden by NoProxy. HTTPSProxy represents the HTTPS_PROXY or https_proxy environment variable. It will be used as the proxy URL for HTTPS requests unless overridden by NoProxy. NoProxy represents the NO_PROXY or no_proxy environment variable. It specifies a string that contains comma-separated values specifying hosts that should be excluded from proxying. Each value is represented by an IP address prefix (, an IP address prefix in CIDR notation (, a domain name, or a special DNS label (*). An IP address prefix and domain name can also include a literal port number ( A domain name matches that name and all subdomains. A domain name with a leading "." matches subdomains only. For example "" matches "" and ""; "" matches "" but not "". A single asterisk (*) indicates that no proxying should be done. A best effort is made to parse the string and errors are ignored. ProxyFunc returns a function that determines the proxy URL to use for a given request URL. Changing the contents of cfg will not affect proxy functions created earlier. A nil URL and nil error are returned if no proxy is defined in the environment, or a proxy should not be used for the given request, as defined by NO_PROXY. As a special case, if req.URL.Host is "localhost" or a loopback address (with or without a port number), then a nil URL and nil error will be returned. func FromEnvironment() *Config
Package-Level Functions (total 7, in which 1 is exported)
FromEnvironment returns a Config instance populated from the environment variables HTTP_PROXY, HTTPS_PROXY and NO_PROXY (or the lowercase versions thereof). The environment values may be either a complete URL or a "host[:port]", in which case the "http" scheme is assumed. An error is returned if the value is a different form.
Package-Level Variables (only one, which is unexported)