Deprecated: Return type of Pimple\Container::offsetExists($id) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/sidawson.com/public/htdocs/wp-content/plugins/better-wp-security/vendor-prod/pimple/pimple/src/Pimple/Container.php on line 133

Deprecated: Return type of Pimple\Container::offsetGet($id) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/sidawson.com/public/htdocs/wp-content/plugins/better-wp-security/vendor-prod/pimple/pimple/src/Pimple/Container.php on line 98

Deprecated: Return type of Pimple\Container::offsetSet($id, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/sidawson.com/public/htdocs/wp-content/plugins/better-wp-security/vendor-prod/pimple/pimple/src/Pimple/Container.php on line 79

Deprecated: Return type of Pimple\Container::offsetUnset($id) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/sidawson.com/public/htdocs/wp-content/plugins/better-wp-security/vendor-prod/pimple/pimple/src/Pimple/Container.php on line 143

Deprecated: Return type of iThemesSecurity\Lib\Lockout\Execute_Lock\Context::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/sidawson.com/public/htdocs/wp-content/plugins/better-wp-security/core/lib/lockout/execute-lock/abstract-context.php on line 60

Deprecated: Return type of iThemesSecurity\Lib\Lockout\Execute_Lock\Context::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/sidawson.com/public/htdocs/wp-content/plugins/better-wp-security/core/lib/lockout/execute-lock/abstract-context.php on line 66

Deprecated: Return type of iThemesSecurity\Lib\Lockout\Execute_Lock\Context::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/sidawson.com/public/htdocs/wp-content/plugins/better-wp-security/core/lib/lockout/execute-lock/abstract-context.php on line 72

Deprecated: Return type of iThemesSecurity\Lib\Lockout\Execute_Lock\Context::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/sidawson.com/public/htdocs/wp-content/plugins/better-wp-security/core/lib/lockout/execute-lock/abstract-context.php on line 76

Deprecated: Return type of iThemesSecurity\Lib\Lockout\Execute_Lock\Context::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/sidawson.com/public/htdocs/wp-content/plugins/better-wp-security/core/lib/lockout/execute-lock/abstract-context.php on line 56

Deprecated: Return type of ITSEC_Lib_Distributed_Storage_Cursor::current() should either be compatible with Iterator::current(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/sidawson.com/public/htdocs/wp-content/plugins/better-wp-security/core/lib/class-itsec-lib-distributed-storage.php on line 578

Deprecated: Return type of ITSEC_Lib_Distributed_Storage_Cursor::next() should either be compatible with Iterator::next(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/sidawson.com/public/htdocs/wp-content/plugins/better-wp-security/core/lib/class-itsec-lib-distributed-storage.php on line 585

Deprecated: Return type of ITSEC_Lib_Distributed_Storage_Cursor::key() should either be compatible with Iterator::key(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/sidawson.com/public/htdocs/wp-content/plugins/better-wp-security/core/lib/class-itsec-lib-distributed-storage.php on line 606

Deprecated: Return type of ITSEC_Lib_Distributed_Storage_Cursor::valid() should either be compatible with Iterator::valid(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/sidawson.com/public/htdocs/wp-content/plugins/better-wp-security/core/lib/class-itsec-lib-distributed-storage.php on line 613

Deprecated: Return type of ITSEC_Lib_Distributed_Storage_Cursor::rewind() should either be compatible with Iterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/sidawson.com/public/htdocs/wp-content/plugins/better-wp-security/core/lib/class-itsec-lib-distributed-storage.php on line 620

Warning: Cannot modify header information - headers already sent by (output started at /srv/sidawson.com/public/htdocs/wp-content/plugins/better-wp-security/core/lib/class-itsec-lib-distributed-storage.php:545) in /srv/sidawson.com/public/htdocs/wp-content/plugins/wp-super-cache/wp-cache-phase2.php on line 1544

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /srv/sidawson.com/public/htdocs/wp-content/plugins/better-wp-security/core/core.php on line 1092
Si Dawson . Com » Blog Archive » Firefox Redirecting Seemingly Randomly

Firefox Redirecting Seemingly Randomly

This is another of the “this is so obscure I couldn’t find anything on Google about it, so I’m writing the canonical post” issues.

I just had an bug that drove me batty. I was trying to access a webserver on localhost, my laptop. Firefox was redirecting to my production (ie not the laptop) server, but other browsers weren’t. Browsing to ‘localhost’ or 127.0.0.1 worked perfectly, it was just using the laptop name that caused the problem.

Straight away this rules out: the local webserver (eg .htaccess rules), dns or hosts files screw ups. I also switched OFF the local server & same issue occurred.

Of course, it took quite some time to nut my way through the above diagnostics.

Turns out it was the Firefox awesome bar being not so awesome.

Months ago, I’d redirected the laptop name (not ‘localhost’ but the actual name) to the production server via the local hosts file, to assist with a debugging issue. Of course, once I finished debugging I changed the hosts file back again.

I only recently installed a webserver on the laptop, & it seems that when I’d browsed to the laptop sufficient number of times, Firefox obviously juggled its internal preferences & then started using an older, cached version of the name->ip resolution. This added to the confusion, of course. It worked perfectly, then with no relevant changes at all suddenly started redirecting.

The solution? View history, & delete all references to the local server. Voila, incorrect ip resolution gets removed & redirection stops.

Crazy. Hopefully this saves you some time.

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July 16th, 2010 | Bugs, Web |
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