From e80a3519c37693561a70172f50baaec3120d9c6b Mon Sep 17 00:00:00 2001 From: Mike Rumph Date: Thu, 13 Aug 2015 19:36:41 +0000 Subject: [PATCH] Grammar corrections. git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1695762 13f79535-47bb-0310-9956-ffa450edef68 --- docs/manual/mod/mod_proxy.xml | 226 +++++++++++++++++----------------- 1 file changed, 114 insertions(+), 112 deletions(-) diff --git a/docs/manual/mod/mod_proxy.xml b/docs/manual/mod/mod_proxy.xml index b2ab2bfa51..a370e960a2 100644 --- a/docs/manual/mod/mod_proxy.xml +++ b/docs/manual/mod/mod_proxy.xml @@ -53,7 +53,7 @@ capabilities
  • mod_proxy_balancer and one or more - balancer modules, if load balancing is required. (See + balancer modules if load balancing is required. (See mod_proxy_balancer for more information.)
  • one or more proxy scheme, or protocol, modules: @@ -101,7 +101,7 @@ server that sits between the client and the origin server. In order to get content from the origin server, the client sends a request to the proxy naming the origin server - as the target and the proxy then requests the content from the + as the target. The proxy then requests the content from the origin server and returns it to the client. The client must be specially configured to use the forward proxy to access other sites.

    @@ -122,15 +122,15 @@

    A reverse proxy (or gateway), by contrast, appears to the client just like an ordinary web server. No special configuration on the client is necessary. - The client makes ordinary requests for content in the name-space + The client makes ordinary requests for content in the namespace of the reverse proxy. The reverse proxy then decides where to - send those requests, and returns the content as if it was itself + send those requests and returns the content as if it were itself the origin.

    A typical usage of a reverse proxy is to provide Internet users access to a server that is behind a firewall. Reverse proxies can also be used to balance load among several back-end - servers, or to provide caching for a slower back-end server. + servers or to provide caching for a slower back-end server. In addition, reverse proxies can be used simply to bring several servers into the same URL space.

    @@ -194,7 +194,7 @@ ProxyVia On
    Workers

    The proxy manages the configuration of origin servers and their communication parameters in objects called workers. - There are two built-in workers, the default forward proxy worker and the + There are two built-in workers: the default forward proxy worker and the default reverse proxy worker. Additional workers can be configured explicitly.

    @@ -215,7 +215,7 @@ ProxyPass "/example" "http://backend.example.com" connectiontimeout=5 timeout=30

    This will create a worker associated with the origin server URL - http://backend.example.com and using the given timeout + http://backend.example.com that will use the given timeout values. When used in a forward proxy, workers are usually defined via the ProxySet directive:

    @@ -235,13 +235,13 @@ ProxyPass "/example" "http://backend.example.com" connectiontimeout=5 timeout=30

    Using explicitly configured workers in the forward mode is not very common, because forward proxies usually communicate with many different origin servers. Creating explicit workers for some of the - origin servers can still be useful, if they are used very often. + origin servers can still be useful if they are used very often. Explicitly configured workers have no concept of forward or reverse proxying by themselves. They encapsulate a common concept of communication with origin servers. A worker created by ProxyPass for use in a - reverse proxy will be also used for forward proxy requests whenever - the URL to the origin server matches the worker URL and vice versa.

    + reverse proxy will also be used for forward proxy requests whenever + the URL to the origin server matches the worker URL, and vice versa.

    The URL identifying a direct worker is the URL of its origin server including any path components given:

    @@ -268,13 +268,13 @@ ProxyPass "/examples" "http://backend.example.com/examples" timeout=10 worker is used. The benefit is, that there is only one connection pool, so connections are more often reused. Note that all configuration attributes given explicitly for the later worker will be ignored. This will be logged - as a warning. In the above example the resulting timeout value + as a warning. In the above example, the resulting timeout value for the URL /examples will be 60 instead of 10!

    If you want to avoid worker sharing, sort your worker definitions by URL length, starting with the longest worker URLs. If you want to maximize - worker sharing use the reverse sort order. See also the related warning about + worker sharing, use the reverse sort order. See also the related warning about ordering ProxyPass directives.

    @@ -287,7 +287,7 @@ ProxyPass "/examples" "http://backend.example.com/examples" timeout=10 ProxySet.

    The set of options available for a direct worker - depends on the protocol, which is specified in the origin server URL. + depends on the protocol which is specified in the origin server URL. Available protocols include ajp, fcgi, ftp, http and scgi.

    @@ -304,7 +304,7 @@ ProxyPass "/examples" "http://backend.example.com/examples" timeout=10
    -
    Controlling access to your proxy +
    Controlling Access to Your Proxy

    You can control who can access your proxy via the Proxy control block as in the following example:

    @@ -492,7 +492,7 @@ ProxyPass "/examples" "http://backend.example.com/examples" timeout=10

    The next example will allow web clients from the specified IP addresses to issue CONNECT requests to access the - https://www.example.com/ SSL server, if + https://www.example.com/ SSL server if mod_proxy_connect is enabled.

    @@ -531,14 +531,14 @@ response

    The ProxyBadHeader directive determines the - behaviour of mod_proxy if it receives syntactically invalid + behavior of mod_proxy if it receives syntactically invalid response header lines (i.e. containing no colon) from the origin server. The following arguments are possible:

    IsError
    Abort the request and end up with a 502 (Bad Gateway) response. This is - the default behaviour.
    + the default behavior.
    Ignore
    Treat bad header lines as if they weren't sent.
    @@ -562,7 +562,7 @@ proxied resources

    The ProxyMatch directive is identical to the Proxy directive, except it matches URLs + type="section">Proxy directive, except that it matches URLs using regular expressions.

    From 2.4.8 onwards, named groups and backreferences are captured and @@ -595,8 +595,8 @@ context in 2.3.3 and later.

    When enabled, this option will pass the Host: line from the incoming - request to the proxied host, instead of the hostname specified in the - ProxyPass line.

    + request to the proxied host instead of the hostname specified in the + ProxyPass line.

    This option should normally be turned Off. It is mostly useful in special configurations like proxied mass name-based virtual @@ -675,7 +675,7 @@ ProxyRemote ftp http://ftpproxy.mydomain:8080 as yet another HTTP proxy request, to another proxy which can handle them.

    -

    This option also supports reverse proxy configuration - a backend +

    This option also supports reverse proxy configuration; a backend webserver can be embedded within a virtualhost URL space even if that server is hidden by another forward proxy.

     @@ -691,8 +691,8 @@ expressions

    The ProxyRemoteMatch is identical to the - ProxyRemote directive, except the - first argument is a regular expression + ProxyRemote directive, except that + the first argument is a regular expression match against the requested URL.

     @@ -709,7 +709,7 @@ expressions

    This directive allows for growth potential in the number of Balancers available for a virtualhost in addition to the number pre-configured. It only takes effect if there is at - least 1 pre-configured Balancer.

    + least one pre-configured Balancer.

    @@ -735,7 +735,7 @@ expressions ProxyPassInherit On server configvirtual host ProxyPassInherit is only available in Apache HTTP Server 2.4.5 and later. - and later. +

    This directive will cause the current server/vhost to "inherit" ProxyPass @@ -772,15 +772,16 @@ expressions directory -

    This directive adds a member to a load balancing group. It could be used +

    This directive adds a member to a load balancing group. It can be used within a <Proxy balancer://...> container - directive, and can take any of the key value pair parameters available to + directive and can take any of the key value pair parameters available to ProxyPass directives.

    One additional parameter is available only to BalancerMember directives: loadfactor. This is the member load factor - a number between 1 (default) and 100, which defines the weighted load to be applied to the member in question.

    -

    The balancerurl is only needed when not in <Proxy balancer://...> +

    The balancerurl is only needed when not within a + <Proxy balancer://...> container directive. It corresponds to the url of a balancer defined in ProxyPass directive.

    The path component of the balancer URL in any @@ -834,8 +835,8 @@ expressions Warning

    Keep in mind that the same parameter key can have a different meaning - depending whether it is applied to a balancer or a worker as shown by the two - examples above regarding timeout.

    + depending whether it is applied to a balancer or a worker, as shown by + the two examples above regarding timeout.

     @@ -853,7 +854,7 @@ expressions

    This directive allows remote servers to be mapped into the - space of the local server; the local server does not act as a + space of the local server. The local server does not act as a proxy in the conventional sense, but appears to be a mirror of the remote server. The local server is often called a reverse proxy or gateway. The path is the name of @@ -870,7 +871,7 @@ expressions

    In 2.4.7 and later, support for using a Unix Domain Socket is available by using a target which prepends unix:/path/lis.sock|. For example, to proxy - HTTP and target the UDS at /home/www/socket you would use + HTTP and target the UDS at /home/www/socket, you would use unix:/home/www.socket|http://localhost/whatever/. Since the socket is local, the hostname used (in this case localhost) is moot, but it is passed as the Host: header value of the request.

    @@ -895,7 +896,7 @@ expressions http://example.com/mirror/foo/bar to be internally converted into a proxy request to http://backend.example.com/bar.

    -

    The following alternative syntax is possible, however it can carry a +

    The following alternative syntax is possible; however, it can carry a performance penalty when present in very large numbers. The advantage of the below syntax is that it allows for dynamic control via the Balancer Manager interface:

    @@ -907,7 +908,7 @@ expressions

    If the first argument ends with a trailing /, the second argument should also end with a trailing / and vice - versa. Otherwise the resulting requests to the backend may miss some + versa. Otherwise, the resulting requests to the backend may miss some needed slashes and do not deliver the expected results.

    @@ -939,14 +940,14 @@ ProxyPass "/mirror/foo" "http://backend.example.com" rules are checked in the order of configuration. The first rule that matches wins. So usually you should sort conflicting ProxyPass rules starting with the - longest URLs first. Otherwise later rules for longer URLS will be hidden + longest URLs first. Otherwise, later rules for longer URLS will be hidden by any earlier rule which uses a leading substring of the URL. Note that there is some relation with worker sharing. In contrast, only one ProxyPass directive can be placed in a Location block, and the most specific location will take precedence.

    -

    For the same reasons exclusions must come before the +

    For the same reasons, exclusions must come before the general ProxyPass directives.

    @@ -956,7 +957,7 @@ ProxyPass "/mirror/foo" "http://backend.example.com" can be retained in a pool for future use. Limits on the pool size and other settings can be coded on the ProxyPass directive - using key=value parameters, described in the table + using key=value parameters, described in the tables below.

    By default, mod_proxy will allow and retain the maximum number of @@ -994,8 +995,8 @@ ProxyPass "/example" "http://backend.example.com" max=20 ttl=120 retry=300 1...n Maximum number of connections that will be allowed to the backend server. The default for this limit is the number of threads - per process in the active MPM. In the Prefork MPM, this is always 1, - while with other MPMs it is controlled by the + per process in the active MPM. In the Prefork MPM, this is always 1; + while with other MPMs, it is controlled by the ThreadsPerChild directive. smax max @@ -1009,16 +1010,16 @@ ProxyPass "/example" "http://backend.example.com" max=20 ttl=120 retry=300 closed more aggressively. acquire - - If set this will be the maximum time to wait for a free + If set, this will be the maximum time to wait for a free connection in the connection pool, in milliseconds. If there are no free - connections in the pool the Apache httpd will return SERVER_BUSY + connections in the pool, the Apache httpd will return SERVER_BUSY status to the client. connectiontimeout timeout Connect timeout in seconds. The number of seconds Apache httpd waits for the creation of a connection to - the backend to complete. By adding a postfix of ms the timeout can be + the backend to complete. By adding a postfix of ms, the timeout can be also set in milliseconds. disablereuse @@ -1043,10 +1044,10 @@ ProxyPass "/example" "http://backend.example.com" max=20 ttl=120 retry=300 off Determines whether the proxy module will auto-flush the output brigade after each "chunk" of data. 'off' means that it will flush - only when needed, 'on' means after each chunk is sent and + only when needed; 'on' means after each chunk is sent; and 'auto' means poll/wait for a period of time and flush if no input has been received for 'flushwait' milliseconds. - Currently this is in effect only for AJP. + Currently, this is in effect only for AJP. flushwait 10 @@ -1062,10 +1063,11 @@ ProxyPass "/example" "http://backend.example.com" max=20 ttl=120 retry=300 keepalive Off

    This parameter should be used when you have a firewall between your - Apache httpd and the backend server, who tend to drop inactive connections. + Apache httpd and the backend server, which tend to drop inactive connections. This flag will tell the Operating System to send KEEP_ALIVE - messages on inactive connections and thus prevent the firewall to drop the connection. - To enable keepalive set this property value to On.

    + messages on inactive connections and thus prevent the firewall + from dropping the connection. + To enable keepalive, set this property value to On.

    The frequency of initial and subsequent TCP keepalive probes depends on global OS settings, and may be as high as 2 hours. To be useful, the frequency configured in the OS must be smaller than the threshold used @@ -1080,22 +1082,22 @@ ProxyPass "/example" "http://backend.example.com" max=20 ttl=120 retry=300 ping 0 Ping property tells the webserver to "test" the connection to - the backend before forwarding the request. For negative values - the test is a simple socket check, for positive values it's + the backend before forwarding the request. For negative values, + the test is a simple socket check; for positive values, it's a more functional check, dependent upon the protocol. For AJP, it causes - mod_proxy_ajpto send a CPING + mod_proxy_ajp to send a CPING request on the ajp13 connection (implemented on Tomcat 3.3.2+, 4.1.28+ and 5.0.13+). For HTTP, it causes mod_proxy_http to send a 100-Continue to the backend (only valid for HTTP/1.1 - for non HTTP/1.1 backends, this property has no - effect). In both cases the parameter is the delay in seconds to wait + effect). In both cases, the parameter is the delay in seconds to wait for the reply. This feature has been added to avoid problems with hung and busy backends. This will increase the network traffic during the normal operation which could be an issue, but it will lower the traffic in case some of the cluster nodes are down or busy. - By adding a postfix of ms the delay can be also set in + By adding a postfix of ms, the delay can be also set in milliseconds. receivebuffersize @@ -1109,16 +1111,16 @@ ProxyPass "/example" "http://backend.example.com" max=20 ttl=120 retry=300 - Redirection Route of the worker. This value is usually set dynamically to enable safe removal of the node from - the cluster. If set all requests without session id will be + the cluster. If set, all requests without session id will be redirected to the BalancerMember that has route parameter - equal as this value. + equal to this value. retry 60 Connection pool worker retry timeout in seconds. If the connection pool worker to the backend server is in the error state, Apache httpd will not forward any requests to that server until the timeout - expires. This enables to shut down the backend server for maintenance, + expires. This enables to shut down the backend server for maintenance and bring it back online later. A value of 0 means always retry workers in an error state with no timeout. @@ -1134,11 +1136,11 @@ ProxyPass "/example" "http://backend.example.com" max=20 ttl=120 retry=300 - + -
    D: Worker is disabled and will not accept any requests.
    S: Worker is administratively stopped.
    I: Worker is in ignore-errors mode, and will always be considered available.
    I: Worker is in ignore-errors mode and will always be considered available.
    H: Worker is in hot-standby mode and will only be used if no other viable workers are available.
    E: Worker is in an error state.
    N: Worker is in drain mode, and will only accept existing sticky sessions +
    N: Worker is in drain mode and will only accept existing sticky sessions destined for itself and ignore all other requests.
    Status can be set (which is the default) by prepending with '+' or @@ -1163,10 +1165,10 @@ ProxyPass "/example" "http://backend.example.com" max=20 ttl=120 retry=300

    If the Proxy directive scheme starts with the balancer:// (eg: balancer://cluster, - any path information is ignored) then a virtual worker that does not really - communicate with the backend server will be created. Instead it is responsible - for the management of several "real" workers. In that case the special set of - parameters can be add to this virtual worker. See mod_proxy_balancer + any path information is ignored), then a virtual worker that does not really + communicate with the backend server will be created. Instead, it is responsible + for the management of several "real" workers. In that case, the special set of + parameters can be added to this virtual worker. See mod_proxy_balancer for more information about how the balancer works.

    Balancer parameters
    @@ -1178,9 +1180,9 @@ ProxyPass "/example" "http://backend.example.com" max=20 ttl=120 retry=300 byrequests Balancer load-balance method. Select the load-balancing scheduler method to use. Either byrequests, to perform weighted - request counting, bytraffic, to perform weighted - traffic byte count balancing, or bybusyness, to perform - pending request balancing. Default is byrequests. + request counting; bytraffic, to perform weighted + traffic byte count balancing; or bybusyness, to perform + pending request balancing. The default is byrequests. maxattempts One less than the number of workers, or 1 with a single worker. @@ -1188,7 +1190,7 @@ ProxyPass "/example" "http://backend.example.com" max=20 ttl=120 retry=300 nofailover Off - If set to On the session will break if the worker is in + If set to On, the session will break if the worker is in error state or disabled. Set this value to On if backend servers do not support session replication. @@ -1197,33 +1199,33 @@ ProxyPass "/example" "http://backend.example.com" max=20 ttl=120 retry=300 Balancer sticky session name. The value is usually set to something like JSESSIONID or PHPSESSIONID, and it depends on the backend application server that support sessions. - If the backend application server uses different name for cookies - and url encoded id (like servlet containers) use | to separate them. - The first part is for the cookie the second for the path.
    + If the backend application server uses different names for cookies + and url encoded id (like servlet containers), use | to separate them. + The first part is for the cookie; the second is for the path.
    Available in Apache HTTP Server 2.4.4 and later. stickysessionsep "." Sets the separation symbol in the session cookie. Some backend application servers - do not use the '.' as the symbol. For example the Oracle Weblogic server uses + do not use the '.' as the symbol. For example, the Oracle Weblogic server uses '!'. The correct symbol can be set using this option. The setting of 'Off' signifies that no symbol is used. scolonpathdelim Off - If set to On the semi-colon character ';' will be + If set to On, the semi-colon character ';' will be used as an additional sticky session path delimiter/separator. This is mainly used to emulate mod_jk's behavior when dealing with paths such as JSESSIONID=6736bcf34;foo=aabfa timeout 0 - Balancer timeout in seconds. If set this will be the maximum time - to wait for a free worker. Default is not to wait. + Balancer timeout in seconds. If set, this will be the maximum time + to wait for a free worker. The default is to not wait. failonstatus - - A single or comma-separated list of HTTP status codes. If set this will + A single or comma-separated list of HTTP status codes. If set, this will force the worker into error state when the backend returns any status code in the list. Worker recovery behaves the same as other worker errors. @@ -1257,13 +1259,13 @@ ProxyPass "/example" "http://backend.example.com" max=20 ttl=120 retry=300 retry parameter of the workers if all workers of a balancer are in error state. There might be cases where an already overloaded backend can get into deeper trouble if the recovery of all workers is enforced - without considering the retry parameter of each worker. In this case + without considering the retry parameter of each worker. In this case, set to Off.
    Available in Apache HTTP Server 2.4.2 and later. -

    A sample balancer setup

    +

    A sample balancer setup:

    ProxyPass "/special-area" "http://special.example.com" smax=5 max=10 ProxyPass "/" "balancer://mycluster/" stickysession=JSESSIONID|jsessionid nofailover=On @@ -1275,7 +1277,7 @@ ProxyPass "/" "balancer://mycluster/" stickysession=JSESSIONID|jsess </Proxy> -

    Setting up a hot-standby, that will only be used if no other +

    Setting up a hot-standby that will only be used if no other members are available

    ProxyPass "/" "balancer://hotcluster/" @@ -1291,9 +1293,9 @@ ProxyPass "/" "balancer://hotcluster/"

    Normally, mod_proxy will canonicalise ProxyPassed URLs. But this may be incompatible with some backends, particularly those that make use of PATH_INFO. The optional nocanon - keyword suppresses this, and passes the URL path "raw" to the - backend. Note that may affect the security of your backend, as it - removes the normal limited protection against URL-based attacks + keyword suppresses this and passes the URL path "raw" to the + backend. Note that this keyword may affect the security of your backend, + as it removes the normal limited protection against URL-based attacks provided by the proxy.

    Normally, mod_proxy will include the query string when @@ -1305,8 +1307,8 @@ ProxyPass "/" "balancer://hotcluster/" >Location section, the first argument is omitted and the local directory is obtained from the Location. The same will occur inside a - LocationMatch section, - however ProxyPass does not interpret the regexp as such, so it is necessary + LocationMatch section; + however, ProxyPass does not interpret the regexp as such, so it is necessary to use ProxyPassMatch in this situation instead.

    This directive is not supported in [P] flag.

    The optional interpolate keyword, in combination with - ProxyPassInterpolateEnv causes the ProxyPass + ProxyPassInterpolateEnv, causes the ProxyPass to interpolate environment variables, using the syntax ${VARNAME}. Note that many of the standard CGI-derived environment variables will not exist when this interpolation happens, @@ -1353,8 +1355,8 @@ ProxyPassReverse "/mirror/foo/" "https://backend.example.com/" -

    This directive is equivalent to ProxyPass, - but makes use of regular expressions, instead of simple prefix matching. The +

    This directive is equivalent to ProxyPass + but makes use of regular expressions instead of simple prefix matching. The supplied regular expression is matched against the url, and if it matches, the server will substitute any parenthesized matches into the given string and use it as a new url.

    @@ -1410,7 +1412,7 @@ ProxyPassMatch "^/(.*\.gif)$" "http://backend.example.com:8000/$1"

    Take care when constructing the target URL of the rule, considering the security impact from allowing the client influence over the set of URLs to which your server will act as a proxy. Ensure that the scheme - and hostname part of the URL is either fixed, or does not allow the + and hostname part of the URL is either fixed or does not allow the client undue influence.

     @@ -1430,7 +1432,7 @@ proxied server

    This directive lets Apache httpd adjust the URL in the Location, Content-Location and URI headers on HTTP redirect responses. This is essential when Apache httpd is used as a - reverse proxy (or gateway) to avoid by-passing the reverse proxy + reverse proxy (or gateway) to avoid bypassing the reverse proxy because of HTTP redirects on the backend servers which stay behind the reverse proxy.

    @@ -1438,13 +1440,13 @@ proxied server will be rewritten. Apache httpd will not rewrite other response headers, nor will it by default rewrite URL references inside HTML pages. This means that if the proxied content contains absolute URL - references, they will by-pass the proxy. To rewrite HTML content to + references, they will bypass the proxy. To rewrite HTML content to match the proxy, you must load and enable mod_proxy_html.

    -

    path is the name of a local virtual path. url is a - partial URL for the remote server - the same way they are used for the - ProxyPass directive.

    +

    path is the name of a local virtual path; url is a + partial URL for the remote server. These parameters are used the same way as + for the ProxyPass directive.

    For example, suppose the local server has address http://example.com/; then

    @@ -1459,10 +1461,10 @@ ProxyPassReverseCookiePath "/" "/mirror/foo/"

    will not only cause a local request for the http://example.com/mirror/foo/bar to be internally converted into a proxy request to http://backend.example.com/bar - (the functionality ProxyPass provides here). It also takes care - of redirects the server backend.example.com sends: when - http://backend.example.com/bar is redirected by him to - http://backend.example.com/quux Apache httpd adjusts this to + (the functionality which ProxyPass provides here). + It also takes care of redirects which the server backend.example.com sends + when redirecting http://backend.example.com/bar to + http://backend.example.com/quux . Apache httpd adjusts this to http://example.com/mirror/foo/quux before forwarding the HTTP redirect response to the client. Note that the hostname used for constructing the URL is chosen in respect to the setting of the LocationMatch section, but will probably not work as intended, as ProxyPassReverse will interpret the regexp literally as a path; if needed in this situation, specify the ProxyPassReverse outside - the section, or in a separate Location section.

    This directive is not supported in

    The ProxyIOBufferSize directive adjusts the size - of the internal buffer, which is used as a scratchpad for the data between + of the internal buffer which is used as a scratchpad for the data between input and output. The size must be at least 512.

    -

    In almost every case there's no reason to change that value.

    +

    In almost every case, there's no reason to change that value.

    -

    If used with AJP this directive sets the maximum AJP packet size in +

    If used with AJP, this directive sets the maximum AJP packet size in bytes. Values larger than 65536 are set to 65536. If you change it from the default, you must also change the packetSize attribute of your AJP connector on the Tomcat side! The attribute @@ -1669,9 +1671,9 @@ through

    The ProxyMaxForwards directive specifies the - maximum number of proxies through which a request may pass, if there's no + maximum number of proxies through which a request may pass if there's no Max-Forwards header supplied with the request. This may - be set to prevent infinite proxy loops, or a DoS attack.

    + be set to prevent infinite proxy loops or a DoS attack.

    Example @@ -1684,7 +1686,7 @@ through setting Max-Forwards if the Client didn't set it. Earlier Apache httpd versions would always set it. A negative ProxyMaxForwards value, including the - default -1, gives you protocol-compliant behaviour, but may + default -1, gives you protocol-compliant behavior, but may leave you open to loops.

    @@ -1736,7 +1738,7 @@ NoProxy .example.com 192.168.112.0/21 Note

    Domain name comparisons are done without regard to the case, and Domains are always assumed to be anchored in the root of the - DNS tree, therefore two domains .ExAmple.com and + DNS tree; therefore, the two domains .ExAmple.com and .example.com. (note the trailing period) are considered equal. Since a domain comparison does not involve a DNS lookup, it is much more efficient than subnet comparison.

    @@ -1806,7 +1808,7 @@ NoProxy .example.com 192.168.112.0/21 link.

    Hostname comparisons are done without regard to the case, and Hostnames are always assumed to be anchored in the root - of the DNS tree, therefore two hosts WWW.ExAmple.com + of the DNS tree; therefore, the two hosts WWW.ExAmple.com and www.example.com. (note the trailing period) are considered equal.

     @@ -1901,13 +1903,13 @@ header for proxied requests -

    This directive is useful for reverse-proxy setups, where you want to +

    This directive is useful for reverse-proxy setups where you want to have a common look and feel on the error pages seen by the end user. This also allows for included files (via mod_include's SSI) to get - the error code and act accordingly (default behavior would display - the error page of the proxied server, turning this on shows the SSI - Error message).

    + the error code and act accordingly. (Default behavior would display + the error page of the proxied server. Turning this on shows the SSI + Error message.)

    This directive does not affect the processing of informational (1xx), normal success (2xx), or redirect (3xx) responses.

    @@ -1927,18 +1929,18 @@ header for proxied requests

    This directive, together with the interpolate argument to ProxyPass, ProxyPassReverse, - ProxyPassReverseCookieDomain and - ProxyPassReverseCookiePath + ProxyPassReverseCookieDomain, and + ProxyPassReverseCookiePath, enables reverse proxies to be dynamically - configured using environment variables, which may be set by + configured using environment variables which may be set by another module such as mod_rewrite. It affects the ProxyPass, ProxyPassReverse, ProxyPassReverseCookieDomain, and - ProxyPassReverseCookiePath directives, + ProxyPassReverseCookiePath directives and causes them to substitute the value of an environment variable varname for the string ${varname} - in configuration directives (if the interpolate option is set).

    + in configuration directives if the interpolate option is set.

    Keep this turned off (for server performance) unless you need it!

     -- 2.40.0