https://test.m.wikipedia.org/w/api.php?action=query&format=json&generator=prefixsearch&redirects=true&gpssearch=a&gpsnamespace=0&gpslimit=20&list=search&srsearch=a&srnamespace=0&srwhat=text&srinfo=suggestion&srprop=&sroffset=0&srlimit=1&prop=pageterms%7Cpageimages&wbptterms=description&piprop=thumbnail&pithumbsize=320&pilimit=20&continue=
yields `PHP Warning: unable to connect to 10.64.0.179 [110]: Connection timed out` coming from `CirrusSearch/includes/Util.php#147`. Full error:
```
2015-09-16 23:15:40 mw1017 testwiki error-json ERROR:
{"id":"5f67d025","type":"ErrorException","file":"/srv/mediawiki/php-1.26wmf23/extensions/PoolCounter/PoolCounterClient_body.php","line":71,"message":"PHP Warning: unable to connect to 10.64.0.179 [110]: Connection timed out","code":0,"url":"/w/api.php?action=query&format=json&generator=prefixsearch&redirects=true&gpssearch=a&gpsnamespace=0&gpslimit=20&list=search&srsearch=a&srnamespace=0&srwhat=text&srinfo=suggestion&srprop=&sroffset=0&srlimit=1&prop=pageterms%7Cpageimages&wbptterms=description&piprop=thumbnail&pithumbsize=320&pilimit=20&continue=","suppressed":true,"backtrace":[{"file":"/srv/mediawiki/php-1.26wmf23/includes/Hooks.php","line":253,"function":"handleError","class":"MWExceptionHandler","type":"::","args":["integer","string","string","integer","array","array"]},{"file":"/srv/mediawiki/php-1.26wmf23/extensions/PoolCounter/PoolCounterClient_body.php","line":71,"function":"hookErrorHandler","class":"Hooks","type":"::","args":["integer","string","string","integer","array","array"]},{"file":"/srv/mediawiki/php-1.26wmf23/extensions/PoolCounter/PoolCounterClient_body.php","line":39,"function":"open","class":"PoolCounter_ConnectionManager","type":"->","args":["string","integer","integer","string"]},{"file":"/srv/mediawiki/php-1.26wmf23/extensions/PoolCounter/PoolCounterClient_body.php","line":123,"function":"get","class":"PoolCounter_ConnectionManager","type":"->","args":["string"]},{"file":"/srv/mediawiki/php-1.26wmf23/extensions/PoolCounter/PoolCounterClient_body.php","line":143,"function":"getConn","class":"PoolCounter_Client","type":"->","args":[]},{"file":"/srv/mediawiki/php-1.26wmf23/extensions/PoolCounter/PoolCounterClient_body.php","line":190,"function":"sendCommand","class":"PoolCounter_Client","type":"->","args":["string","string","integer","integer","integer"]},{"file":"/srv/mediawiki/php-1.26wmf23/includes/poolcounter/PoolCounterWork.php","line":108,"function":"acquireForMe","class":"PoolCounter_Client","type":"->","args":[]},{"file":"/srv/mediawiki/php-1.26wmf23/extensions/CirrusSearch/includes/Util.php","line":147,"function":"execute","class":"PoolCounterWork","type":"->","args":[]},{"file":"/srv/mediawiki/php-1.26wmf23/includes/poolcounter/PoolCounterWorkViaCallback.php","line":69,"function":"Closure$CirrusSearch\\Util::doPoolCounterWork#4","args":[]},{"file":"/srv/mediawiki/php-1.26wmf23/includes/poolcounter/PoolCounterWork.php","line":123,"function":"doWork","class":"PoolCounterWorkViaCallback","type":"->","args":[]},{"file":"/srv/mediawiki/php-1.26wmf23/extensions/CirrusSearch/includes/Util.php","line":161,"function":"execute","class":"PoolCounterWork","type":"->","args":[]},{"file":"/srv/mediawiki/php-1.26wmf23/extensions/CirrusSearch/includes/Searcher.php","line":1473,"function":"doPoolCounterWork","class":"CirrusSearch\\Util","type":"::","args":["string","User","Closure$CirrusSearch\\Searcher::search#2;1334410063","Closure$CirrusSearch\\Searcher::search#3;1334410063"]},{"file":"/srv/mediawiki/php-1.26wmf23/extensions/CirrusSearch/includes/Searcher.php","line":349,"function":"search","class":"CirrusSearch\\Searcher","type":"->","args":["string","string"]},{"file":"/srv/mediawiki/php-1.26wmf23/extensions/CirrusSearch/includes/Hooks.php","line":696,"function":"prefixSearch","class":"CirrusSearch\\Searcher","type":"->","args":["string"]},{"file":"/srv/mediawiki/php-1.26wmf23/includes/Hooks.php","line":204,"function":"prefixSearch","class":"CirrusSearch\\Hooks","type":"::","args":["array","string","integer","array","integer"]},{"file":"/srv/mediawiki/php-1.26wmf23/includes/PrefixSearch.php","line":161,"function":"run","class":"Hooks","type":"::","args":["string","array"]},{"file":"/srv/mediawiki/php-1.26wmf23/includes/PrefixSearch.php","line":70,"function":"searchBackend","class":"PrefixSearch","type":"->","args":["array","string","integer","integer"]},{"file":"/srv/mediawiki/php-1.26wmf23/includes/PrefixSearch.php","line":98,"function":"search","class":"PrefixSearch","type":"->","args":["string","integer","array","integer"]},{"file":"/srv/mediawiki/php-1.26wmf23/includes/api/ApiQueryPrefixSearch.php","line":49,"function":"searchWithVariants","class":"PrefixSearch","type":"->","args":["string","integer","array","integer"]},{"file":"/srv/mediawiki/php-1.26wmf23/includes/api/ApiQueryPrefixSearch.php","line":35,"function":"run","class":"ApiQueryPrefixSearch","type":"->","args":["ApiPageSet"]},{"file":"/srv/mediawiki/php-1.26wmf23/includes/api/ApiPageSet.php","line":172,"function":"executeGenerator","class":"ApiQueryPrefixSearch","type":"->","args":["ApiPageSet"]},{"file":"/srv/mediawiki/php-1.26wmf23/includes/api/ApiPageSet.php","line":136,"function":"executeInternal","class":"ApiPageSet","type":"->","args":["boolean"]},{"file":"/srv/mediawiki/php-1.26wmf23/includes/api/ApiQuery.php","line":271,"function":"execute","class":"ApiPageSet","type":"->","args":[]},{"file":"/srv/mediawiki/php-1.26wmf23/includes/api/ApiMain.php","line":1270,"function":"execute","class":"ApiQuery","type":"->","args":[]},{"file":"/srv/mediawiki/php-1.26wmf23/includes/api/ApiMain.php","line":466,"function":"executeAction","class":"ApiMain","type":"->","args":[]},{"file":"/srv/mediawiki/php-1.26wmf23/includes/api/ApiMain.php","line":438,"function":"executeActionWithErrorHandling","class":"ApiMain","type":"->","args":[]},{"file":"/srv/mediawiki/php-1.26wmf23/api.php","line":88,"function":"execute","class":"ApiMain","type":"->","args":[]},{"file":"/srv/mediawiki/w/api.php","line":3,"function":"include","args":["string"]}]}
```