… | |
… | |
1234 | require "AnyEvent/constants.pl"; |
1234 | require "AnyEvent/constants.pl"; |
1235 | |
1235 | |
1236 | eval "sub TAINT (){" . (${^TAINT}*1) . "}"; |
1236 | eval "sub TAINT (){" . (${^TAINT}*1) . "}"; |
1237 | |
1237 | |
1238 | delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV} |
1238 | delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV} |
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|
1239 | if ${^TAINT}; |
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1240 | |
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|
1241 | $ENV{"PERL_ANYEVENT_$_"} = $ENV{"AE_$_"} |
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1242 | for grep s/^AE_// && !exists $ENV{"PERL_ANYEVENT_$_"}, keys %ENV; |
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1243 | |
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|
1244 | @ENV{grep /^PERL_ANYEVENT_/, keys %ENV} = () |
1239 | if ${^TAINT}; |
1245 | if ${^TAINT}; |
1240 | |
1246 | |
1241 | $VERBOSE = $ENV{PERL_ANYEVENT_VERBOSE}*1; |
1247 | $VERBOSE = $ENV{PERL_ANYEVENT_VERBOSE}*1; |
1242 | } |
1248 | } |
1243 | |
1249 | |
… | |
… | |
1416 | |
1422 | |
1417 | _isa_set; |
1423 | _isa_set; |
1418 | |
1424 | |
1419 | # we're officially open! |
1425 | # we're officially open! |
1420 | |
1426 | |
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|
1427 | if (length $ENV{PERL_ANYEVENT_LOG}) { |
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1428 | require AnyEvent::Log; # AnyEvent::Log does the thing for us |
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|
1429 | } |
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1430 | |
1421 | if ($ENV{PERL_ANYEVENT_STRICT}) { |
1431 | if ($ENV{PERL_ANYEVENT_STRICT}) { |
1422 | require AnyEvent::Strict; |
1432 | require AnyEvent::Strict; |
1423 | } |
1433 | } |
1424 | |
1434 | |
1425 | if ($ENV{PERL_ANYEVENT_DEBUG_WRAP}) { |
1435 | if ($ENV{PERL_ANYEVENT_DEBUG_WRAP}) { |
… | |
… | |
1975 | $Event/EV::DIED->() >>, L<Glib> uses C<< install_exception_handler >> and |
1985 | $Event/EV::DIED->() >>, L<Glib> uses C<< install_exception_handler >> and |
1976 | so on. |
1986 | so on. |
1977 | |
1987 | |
1978 | =head1 ENVIRONMENT VARIABLES |
1988 | =head1 ENVIRONMENT VARIABLES |
1979 | |
1989 | |
1980 | The following environment variables are used by this module or its |
1990 | AnyEvent supports a number of environment variables that tune the |
1981 | submodules. |
1991 | runtime behaviour. They are usually evaluated when AnyEvent is |
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|
1992 | loaded, initialised, or a submodule that uses them is loaded. Many of |
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1993 | them also cause AnyEvent to load additional modules - for example, |
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|
1994 | C<PERL_ANYEVENT_DEBUG_WRAP> causes the L<AnyEvent::Debug> module to be |
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1995 | loaded. |
1982 | |
1996 | |
1983 | Note that AnyEvent will remove I<all> environment variables starting with |
1997 | All the environment variables documented here start with |
1984 | C<PERL_ANYEVENT_> from C<%ENV> when it is loaded while taint mode is |
1998 | C<PERL_ANYEVENT_>, which is what AnyEvent considers its own |
1985 | enabled. |
1999 | namespace. Other modules are encouraged (but by no means required) to use |
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|
2000 | C<PERL_ANYEVENT_SUBMODULE> if they have registered the AnyEvent::Submodule |
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2001 | namespace on CPAN, for any submodule. For example, L<AnyEvent::HTTP> could |
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2002 | be expected to use C<PERL_ANYEVENT_HTTP_PROXY> (it should not access env |
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2003 | variables starting with C<AE_>, see below). |
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2004 | |
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2005 | All variables can also be set via the C<AE_> prefix, that is, instead |
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2006 | of setting C<PERL_ANYEVENT_VERBOSE> you can also set C<AE_VERBOSE>. In |
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2007 | case there is a clash btween anyevent and another program that uses |
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2008 | C<AE_something> you can set the corresponding C<PERL_ANYEVENT_something> |
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2009 | variable to the empty string, as those variables take precedence. |
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2010 | |
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2011 | When AnyEvent is first loaded, it copies all C<AE_xxx> env variables |
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2012 | to their C<PERL_ANYEVENT_xxx> counterpart unless that variable already |
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2013 | exists. If taint mode is on, then AnyEvent will remove I<all> environment |
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2014 | variables starting with C<PERL_ANYEVENT_> from C<%ENV> (or replace them |
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2015 | with C<undef> or the empty string, if the corresaponding C<AE_> variable |
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2016 | is set). |
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2017 | |
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2018 | The exact algorithm is currently: |
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2019 | |
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2020 | 1. if taint mode enabled, delete all PERL_ANYEVENT_xyz variables from %ENV |
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2021 | 2. copy over AE_xyz to PERL_ANYEVENT_xyz unless the latter alraedy exists |
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2022 | 3. if taint mode enabled, set all PERL_ANYEVENT_xyz variables to undef. |
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2023 | |
|
|
2024 | This ensures that child processes will not see the C<AE_> variables. |
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2025 | |
|
|
2026 | The following environment variables are currently known to AnyEvent: |
1986 | |
2027 | |
1987 | =over 4 |
2028 | =over 4 |
1988 | |
2029 | |
1989 | =item C<PERL_ANYEVENT_VERBOSE> |
2030 | =item C<PERL_ANYEVENT_VERBOSE> |
1990 | |
2031 | |
1991 | By default, AnyEvent will be completely silent except in fatal |
2032 | By default, AnyEvent will be completely silent except in fatal |
1992 | conditions. You can set this environment variable to make AnyEvent more |
2033 | conditions. You can set this environment variable to make AnyEvent more |
1993 | talkative. |
2034 | talkative. If you want to do more than just set the global logging level |
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|
2035 | you should have a look at C<PERL_ANYEVENT_LOG>, which allows much more |
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2036 | complex specifications. |
1994 | |
2037 | |
1995 | When set to C<5> or higher, causes AnyEvent to warn about unexpected |
2038 | When set to C<5> or higher, causes AnyEvent to warn about unexpected |
1996 | conditions, such as not being able to load the event model specified by |
2039 | conditions, such as not being able to load the event model specified by |
1997 | C<PERL_ANYEVENT_MODEL>. |
2040 | C<PERL_ANYEVENT_MODEL>. |
1998 | |
2041 | |
1999 | When set to C<7> or higher, cause AnyEvent to report to STDERR which event |
2042 | When set to C<7> or higher, cause AnyEvent to report to STDERR which event |
2000 | model it chooses. |
2043 | model it chooses. |
2001 | |
2044 | |
2002 | When set to C<8> or higher, then AnyEvent will report extra information on |
2045 | When set to C<8> or higher, then AnyEvent will report extra information on |
2003 | which optional modules it loads and how it implements certain features. |
2046 | which optional modules it loads and how it implements certain features. |
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|
2047 | |
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|
2048 | =item C<PERL_ANYEVENT_LOG> |
|
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2049 | |
|
|
2050 | Accepts rather complex logging specifications. For example, you could log |
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2051 | all C<debug> messages of some module to stderr, warnings and above to |
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|
2052 | stderr, and errors and above to syslog, with: |
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2053 | |
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|
2054 | PERL_ANYEVENT_LOG=Some::Module=debug,+log:filter=warn,+%syslog:%syslog=error,syslog |
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2055 | |
|
|
2056 | For the rather extensive details, see L<AnyEvent::Log>. |
|
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2057 | |
|
|
2058 | Note that specifying this environment variable causes the L<AnyEvent::Log> |
|
|
2059 | module to be loaded, while C<PERL_ANYEVENT_VERBOSE> does not, so only |
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|
2060 | using the latter saves a few hundred kB of memory until the first message |
|
|
2061 | is being logged. |
2004 | |
2062 | |
2005 | =item C<PERL_ANYEVENT_STRICT> |
2063 | =item C<PERL_ANYEVENT_STRICT> |
2006 | |
2064 | |
2007 | AnyEvent does not do much argument checking by default, as thorough |
2065 | AnyEvent does not do much argument checking by default, as thorough |
2008 | argument checking is very costly. Setting this variable to a true value |
2066 | argument checking is very costly. Setting this variable to a true value |
… | |
… | |
2080 | addresses. C<PERL_ANYEVENT_PROTOCOLS=ipv6,ipv4> support either IPv4 or |
2138 | addresses. C<PERL_ANYEVENT_PROTOCOLS=ipv6,ipv4> support either IPv4 or |
2081 | IPv6, but prefer IPv6 over IPv4. |
2139 | IPv6, but prefer IPv6 over IPv4. |
2082 | |
2140 | |
2083 | =item C<PERL_ANYEVENT_EDNS0> |
2141 | =item C<PERL_ANYEVENT_EDNS0> |
2084 | |
2142 | |
2085 | Used by L<AnyEvent::DNS> to decide whether to use the EDNS0 extension |
2143 | Used by L<AnyEvent::DNS> to decide whether to use the EDNS0 extension for |
2086 | for DNS. This extension is generally useful to reduce DNS traffic, but |
2144 | DNS. This extension is generally useful to reduce DNS traffic, especially |
2087 | some (broken) firewalls drop such DNS packets, which is why it is off by |
2145 | when DNSSEC is involved, but some (broken) firewalls drop such DNS |
2088 | default. |
2146 | packets, which is why it is off by default. |
2089 | |
2147 | |
2090 | Setting this variable to C<1> will cause L<AnyEvent::DNS> to announce |
2148 | Setting this variable to C<1> will cause L<AnyEvent::DNS> to announce |
2091 | EDNS0 in its DNS requests. |
2149 | EDNS0 in its DNS requests. |
2092 | |
2150 | |
2093 | =item C<PERL_ANYEVENT_MAX_FORKS> |
2151 | =item C<PERL_ANYEVENT_MAX_FORKS> |
… | |
… | |
2101 | resolver - this is the maximum number of parallel DNS requests that are |
2159 | resolver - this is the maximum number of parallel DNS requests that are |
2102 | sent to the DNS server. |
2160 | sent to the DNS server. |
2103 | |
2161 | |
2104 | =item C<PERL_ANYEVENT_RESOLV_CONF> |
2162 | =item C<PERL_ANYEVENT_RESOLV_CONF> |
2105 | |
2163 | |
2106 | The file to use instead of F</etc/resolv.conf> (or OS-specific |
2164 | The absolute path to a F<resolv.conf>-style file to use instead of |
2107 | configuration) in the default resolver. When set to the empty string, no |
2165 | F</etc/resolv.conf> (or the OS-specific configuration) in the default |
2108 | default config will be used. |
2166 | resolver, or the empty string to select the default configuration. |
2109 | |
2167 | |
2110 | =item C<PERL_ANYEVENT_CA_FILE>, C<PERL_ANYEVENT_CA_PATH>. |
2168 | =item C<PERL_ANYEVENT_CA_FILE>, C<PERL_ANYEVENT_CA_PATH>. |
2111 | |
2169 | |
2112 | When neither C<ca_file> nor C<ca_path> was specified during |
2170 | When neither C<ca_file> nor C<ca_path> was specified during |
2113 | L<AnyEvent::TLS> context creation, and either of these environment |
2171 | L<AnyEvent::TLS> context creation, and either of these environment |
2114 | variables exist, they will be used to specify CA certificate locations |
2172 | variables are nonempty, they will be used to specify CA certificate |
2115 | instead of a system-dependent default. |
2173 | locations instead of a system-dependent default. |
2116 | |
2174 | |
2117 | =item C<PERL_ANYEVENT_AVOID_GUARD> and C<PERL_ANYEVENT_AVOID_ASYNC_INTERRUPT> |
2175 | =item C<PERL_ANYEVENT_AVOID_GUARD> and C<PERL_ANYEVENT_AVOID_ASYNC_INTERRUPT> |
2118 | |
2176 | |
2119 | When these are set to C<1>, then the respective modules are not |
2177 | When these are set to C<1>, then the respective modules are not |
2120 | loaded. Mostly good for testing AnyEvent itself. |
2178 | loaded. Mostly good for testing AnyEvent itself. |