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fuss:polipo [2014/03/05 15:37]
office [Suppress Forbidden Output]
fuss:polipo [2017/02/22 18:30] (current)
Line 1: Line 1:
 +====== Speed Tweaks ======
  
 +Polipo seems to perform best when it is not tampered with and while it uses the default settings.
 +
 +<​code>​
 +## Cache
 +# If polipo is not used by more than one person.
 +cacheIsShared = false
 +
 +## Network
 +# Do not perform IPv6 queries. A minor speed-up.
 +dnsQueryIPv6 = no
 +
 +## Webserver
 +# Disables all of polipo'​s internal webserver features
 +# which is a good idea if they are not used or needed.
 +disableConfiguration = true
 +disableLocalInterface = true
 +localDocumentRoot = ""​
 +disableIndexing = true
 +
 +## Privacy
 +# Disabling sending hostname or IP to upstream proxies.
 +disableVia = true
 +# Censors headers, the following do not seem to break anything.
 +censoredHeaders = from,​accept-language,​x-pad,​link
 +censorReferer = maybe
 +
 +## Blocking
 +# It will never resolve to anything.
 +forbiddenUrl = about:blank
 +
 +</​code>​
 +
 +  * Any other additional options seem to make ''​polipo''​ slower (including setting a chunk size, etc...).
 +  * Do //not// enable PMM (Poor-Man'​s Multiplexing),​ it //will// break websites.
 +  * ''​relaxTransparency'',​ if set to ''​true''​ //will// break websites.
 +====== Ad Blocking ======
 +
 +You can retrieve the current list of spam domains from [[:​assets:​databases:​spam|the spam domains page]] and copy the ''​domains.txt''​ file to ''/​etc/​polipo/​forbidden''​ and let polipo filter out most ads.
 +
 +Compared to ''​dansguardian'',​ ''​squidGuard'',​ ''​privoxy''​ and ''​tinyproxy'',​ it appears that ''​polipo''​ has the most efficient filtering system:
 +
 +  * ''​dansguardian''​ - slow, bulky, weighted system, a general mess that you will have to tweak all the time.
 +  * ''​squidGuard''​ - pretty good, you have to rehash the lists, slower than ''​polipo''​ in any case.
 +  * ''​privoxy''​ - perceivably slow filtering compared to ''​polipo''​.
 +  * ''​tinyproxy''​ - will crash the system if the ''/​etc/​filter''​ URL list is sufficiently long.
 +
 +====== Suppress Forbidden Output ======
 +
 +This hack will suppress any output on ''​HTTP 403 Forbidden''​ and is useful in combination with a ''​forbidden''​ file that allows you to specify which domains to block such that an empty document is returned instead of a ghastly error message:
 +
 +<code diff>
 +--- http.c.orig 2014-03-05 15:​23:​19.000000000 +0000
 ++++ http.c 2014-03-05 15:​26:​34.118668644 +0000
 +@@ -855,7 +855,7 @@
 +     else
 +         ​htmlMessage[MIN(i,​ 99)] = '​\0';​
 + 
 +-    if(code != 304) {
 ++    if(code != 304 && code != 403) {
 +         body = get_chunk();​
 +         ​if(!body) {
 +             ​do_log(L_ERROR,​ "​Couldn'​t allocate body buffer.\n"​);​
 +
 +</​code>​
 +
 +{{:​wizardale.png | Oh no, not this shit again!}} The reasoning behind polipo'​s [[http://​www.pps.univ-paris-diderot.fr/​~jch/​software/​polipo/​manual/​Internal-forbidden-list.html|forbidden]] file is severely flawed. The author claims that the ''​forbidden''​ file //"​specifies the set of URLs that should never be fetched"//​. However, ''​polipo''​ internally manages the ''​forbidden''​ file as a list of URLs that will return ''​HTTP 403''​ to the client which is different from what the author claims. The result is that failed outcomes from an authentication procedure (ie: through HTTP) will return the same error code as any other domain from the ''​forbidden''​ file. This is wrong. Do not use this patch if you authenticate to services that return ''​HTTP 403''​ on failure or you will get a blank document.

fuss/polipo.txt ยท Last modified: 2017/02/22 18:30 (external edit)

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