Event-RPC
view release on metacpan or search on metacpan
fixes missing encoding declarations in POD. Thanks!
- Fixed some POD typos. Thanks for the report to
Xavier Guimard.
1.04 Fri Feb 24, 2014, joern
Bugfixes
- Under certain infrequently conditions it could
happen that the server process blocked when
sending a response packet to a client.
- Event::RPC::Client failed loading when no
IO::Socket::SSL is installed.
1.03 Sat Feb 2, 2013, joern
Features:
- Added options 'ssl_ca_file and 'ssl_ca_path' options
to Event::RPC::Client, which enable SSL peer verifcation
on the client. Thanks for the report about a security
warning of IO::Socket::SSL to Moritz Bunkus.
1.02 Tue Mar 8, 2011, joern
Features:
- Added AnyEvent mainloop implementation.
1.01 Sat Oct 25, 2008, joern
Bugfixes:
- Even objects returned by methods not declared as
an "object returner" where turned into Event::RPC
object handles instead of copying the complete
0.86 Sat Dec 17, 2005, joern
Features:
- added Event::RPC::Server->get_active_connection
- documented Event::RPC::Connection->get_client_oids
- added Event::RPC::Connection->get_client_object
Bugfixes:
- Added missing documentation for Event::RPC::Client's
error_cb attribute, which was just mentioned in
the SYNPOSIS.
- Fixed an incompatability with IO::Socket::SSL 0.97,
which doesn't return different sysread() states for
error and eof anymore which confused Event::RPC.
0.85 Sun Aug 28, 2005, joern
Bugfixes:
- Make server more bullet proof: handle log connections
even if no logger is set, but a log listener was started.
- Event::RPC::Server->new didn't recognize the
'connection_hook' parameter.
- Try making the testsuite more stable with Win32.
- Full documentation added.
- Test suite added which covers all connection
types and the most important features.
0.81 Sun Mar 13, 2005, joern
Notes:
- Still an internal release, incomplete documentation, no
test suite.
Features:
- Support for SSL encryption added using IO::Socket::SSL.
- Event loop abstraction. Event::RPC now works with Event
and Glib and can be easily extended for other event loop
frameworks. Thanks to Rocco Caputo for the suggestion.
0.80 Sun Mar 13, 2005, joern
Notes:
- A non public release. Only announced on the perl-loop mailing
list for the namespace request and to get comments. Module
is fully working but API isn't documented yet very well.
Security stuff (SSL encryption, some password authentication)
"configure" : {
"requires" : {
"ExtUtils::MakeMaker" : "0"
}
},
"runtime" : {
"requires" : {
"Event" : "0",
"Glib" : "0",
"IO::Socket::INET" : "0",
"IO::Socket::SSL" : "0",
"JSON::XS" : "3",
"Net::SSLeay" : "0",
"Sereal" : "3",
"Storable" : "0",
"Test::More" : "0"
}
}
},
"release_status" : "stable",
"version" : "1.10",
version: '1.4'
name: Event-RPC
no_index:
directory:
- t
- inc
requires:
Event: '0'
Glib: '0'
IO::Socket::INET: '0'
IO::Socket::SSL: '0'
JSON::XS: '3'
Net::SSLeay: '0'
Sereal: '3'
Storable: '0'
Test::More: '0'
version: '1.10'
x_serialization_backend: 'CPAN::Meta::YAML version 0.018'
Makefile.PL view on Meta::CPAN
if ( !$format_modules ) {
print "\n";
print "*****************************************************************\n";
print "WARNING: You need Sereal, CBOR::XS, JSON::XS or Storable module\n";
print "*****************************************************************\n";
print "\n";
}
my $has_ssl;
eval { require IO::Socket::SSL; $has_ssl = 1 } || do {
print "\n";
print "NOTE: Event::RPC is capable of SSL encrypted connections,\n";
print " but your Perl is missing the IO::Socket::SSL module.\n";
print " Event::RPC works perfectly without the module, but you\n";
print " can't use SSL connections until IO::Socket::SSL is\n";
print " installed.\n";
print "\n";
};
#-- Add found modules to PREREQ_PM, so CPAN Testers add
#-- version numbers of these modules to the reports, which
#-- are very important in case of failing tests.
my @add_prereq;
push @add_prereq, 'AnyEvent', 0 if not $loop_modules;
push @add_prereq, 'Event', 0 if $has_event;
push @add_prereq, 'Glib', 0 if $has_glib;
push @add_prereq, "Sereal", 3.0 if $has_sereal or not $format_modules;
push @add_prereq, "CBOR::XS", 0 if $has_cbor_xs;
push @add_prereq, "JSON::XS", 3.0 if $has_json_xs;
push @add_prereq, "Storable", 0 if $has_storable;
push @add_prereq, 'IO::Socket::SSL', 0 if $has_ssl;
push @add_prereq, 'Net::SSLeay', 0 if $has_ssl;
WriteMakefile(
'NAME' => 'Event::RPC',
'VERSION_FROM' => 'lib/Event/RPC.pm',
'PREREQ_PM' => {
'Test::More' => 0,
'Storable' => 0,
'IO::Socket::INET' => 0,
@add_prereq,
$client->connect;
#-- Call methods of My::TestModule on the server
my $obj = My::TestModule->new ( foo => "bar" );
my $foo = $obj->get_foo;
ABSTRACT
Event::RPC supports you in developing Event based networking
client/server applications with transparent object/method access from
the client to the server. Network communication is optionally encrypted
using IO::Socket::SSL. Several event loop managers are supported due to
an extensible API. Currently Event, Glib and AnyEvent are implemented.
The latter lets you use nearly every event loop implementation available
for Perl. AnyEvent was invented after Event::RPC was created and thus
Event::RPC started using it's own abstraction model.
DESCRIPTION
Event::RPC consists of a server and a client library. The server exports
a list of classes and methods, which are allowed to be called over the
network. More specific it acts as a proxy for objects created on the
server side (on demand of the connected clients) which handles client
Event::RPC needs either one of the following modules on the server
(they're not necessary on the client):
Event
Glib
AnyEvent
They're needed for event handling resp. mainloop implementation. If you
like to use SSL encryption you need to install
IO::Socket::SSL
Event::RPC needs minimum one of the following modules for data
serialisation:
Sereal (::Decoder and ::Encoder)
CBOR::XS
JSON::XS
Storable
Server and client negotiate automatically which serialiser to use to
lib/Event/RPC.pm view on Meta::CPAN
port => 5555,
);
$client->connect;
#-- Call methods of My::TestModule on the server
my $obj = My::TestModule->new ( foo => "bar" );
my $foo = $obj->get_foo;
=head1 ABSTRACT
Event::RPC supports you in developing Event based networking client/server applications with transparent object/method access from the client to the server. Network communication is optionally encrypted using IO::Socket::SSL. Several event loop manag...
=head1 DESCRIPTION
Event::RPC consists of a server and a client library. The server exports a list of classes and methods, which are allowed to be called over the network. More specific it acts as a proxy for objects created on the server side (on demand of the connect...
The object proxy handles refcounting and destruction of objects created by clients properly. Objects as method parameters and return values are handled as well (although with some limitations, see below).
For the client the whole thing is totally transparent - once connected to the server it doesn't know whether it calls methods on local or remote objects.
Also the methods on the server newer know whether they are called locally
lib/Event/RPC.pm view on Meta::CPAN
Event::RPC needs either one of the following modules on the server
(they're not necessary on the client):
Event
Glib
AnyEvent
They're needed for event handling resp. mainloop implementation.
If you like to use SSL encryption you need to install
IO::Socket::SSL
Event::RPC needs minimum one of the following modules for
data serialisation:
Sereal (::Decoder and ::Encoder)
CBOR::XS
JSON::XS
Storable
Server and client negotiate automatically which serialiser to use
lib/Event/RPC/Client.pm view on Meta::CPAN
my $timeout = $self->get_timeout;
$self->set_message_format($Event::RPC::Client::DEFAULT_MESSAGE_FORMAT);
#-- Client may try to fallback to Storable
Event::RPC::Message::Negotiate->set_storable_fallback_ok(1)
if $self->get_message_format eq 'Event::RPC::Message::Negotiate' and
$self->get_insecure_msg_fmt_ok;
if ( $ssl ) {
eval { require IO::Socket::SSL };
croak "SSL requested, but IO::Socket::SSL not installed" if $@;
}
my $sock;
if ( $ssl ) {
my @verify_opts;
if ( $self->get_ssl_ca_file or $self->get_ssl_ca_path ) {
push @verify_opts, (
SSL_verify_mode => IO::Socket::SSL::SSL_VERIFY_PEER(),
SSL_ca_file => $self->get_ssl_ca_file,
SSL_ca_path => $self->get_ssl_ca_path,
);
}
else {
push @verify_opts, (
SSL_verify_mode => IO::Socket::SSL::SSL_VERIFY_NONE(),
);
}
my $ssl_opts = $self->get_ssl_opts;
$sock = IO::Socket::SSL->new(
Proto => 'tcp',
PeerPort => $port,
PeerAddr => $server,
Type => SOCK_STREAM,
Timeout => $timeout,
@verify_opts,
($ssl_opts?%{$ssl_opts}:()),
)
or croak "Can't open SSL connection to $server:$port: $IO::Socket::SSL::ERROR";
}
else {
$sock = IO::Socket::INET->new(
Proto => 'tcp',
PeerPort => $port,
PeerAddr => $server,
Type => SOCK_STREAM,
Timeout => $timeout,
)
or croak "Can't open connection to $server:$port - $!";
lib/Event/RPC/Client.pm view on Meta::CPAN
=item B<ssl_ca_path>
Path of a directory containing several trusted certificates with
a proper index. Please refer to the OpenSSL documentation for
details about setting up such a directory.
=item B<ssl_opts>
This optional parameter takes a hash reference of options
passed to IO::Socket::SSL->new(...) to have more control
over the SSL connection. For example you can set the
'SSL_verifycn_name' here if the server certificate common
name doesn't match to the hostname you use to resolve
the server IP or use you have to use a static server IP
address or something like that.
=back
=head2 AUTHENTICATION OPTIONS
lib/Event/RPC/Server.pm view on Meta::CPAN
my $port = $self->get_port;
my @LocalHost = $host ? ( LocalHost => $host ) : ();
$host ||= "*";
#-- get event loop manager
my $loop = $self->get_loop;
#-- setup rpc listener
my $rpc_socket;
if ( $self->get_ssl ) {
eval { require IO::Socket::SSL };
croak "SSL requested, but IO::Socket::SSL not installed" if $@;
croak "ssl_key_file not set" unless $self->get_ssl_key_file;
croak "ssl_cert_file not set" unless $self->get_ssl_cert_file;
my $ssl_opts = $self->get_ssl_opts;
$rpc_socket = IO::Socket::SSL->new (
Listen => SOMAXCONN,
@LocalHost,
LocalPort => $port,
Proto => 'tcp',
ReuseAddr => 1,
SSL_key_file => $self->get_ssl_key_file,
SSL_cert_file => $self->get_ssl_cert_file,
SSL_passwd_cb => $self->get_ssl_passwd_cb,
($ssl_opts?%{$ssl_opts}:()),
) or die "can't start SSL RPC listener: $IO::Socket::SSL::ERROR";
}
else {
$rpc_socket = IO::Socket::INET->new (
Listen => SOMAXCONN,
@LocalHost,
LocalPort => $port,
Proto => 'tcp',
ReuseAddr => 1,
) or die "can't start RPC listener: $!";
}
lib/Event/RPC/Server.pm view on Meta::CPAN
=back
=back
=head2 SSL OPTIONS
The client/server protocol of Event::RPC is not encrypted by default,
so everyone listening on your network can read or even manipulate
data. To prevent this efficiently you can enable SSL encryption.
Event::RPC uses the IO::Socket::SSL Perl module for this.
First you need to generate a server key and certificate for your server
using the openssl command which is part of the OpenSSL distribution,
e.g. by issueing these commands (please refer to the manpage of openssl
for details - this is a very rough example, which works in general, but
probably you want to tweak some parameters):
% openssl genrsa -des3 -out server.key 1024
% openssl req -new -key server.key -out server.csr
% openssl x509 -req -days 3600 -in server.csr \
lib/Event/RPC/Server.pm view on Meta::CPAN
password, e.g.
ssl_passwd_cb => sub { return "topsecret" }
But note: having the password in plaintext in your program code is
insecure!
=item B<ssl_opts>
This optional parameter takes a hash reference of options
passed to IO::Socket::SSL->new(...) to have more control
over the server SSL listener.
=back
=head2 AUTHENTICATION OPTIONS
SSL encryption is fine, now it's really hard for an attacker to
listen or modify your network communication. But without any further
configuration any user on your network is able to connect to your
server. To prevent this users resp. connections to your server
t/04.cnct-auth-ssl-verifypeer-noca.t view on Meta::CPAN
my $depend_modules = 0;
eval { require EV };
eval { require AnyEvent } && ++$depend_modules;
eval { require Event } && ++$depend_modules;
eval { require Glib } && ++$depend_modules;
if ( not $depend_modules ) {
plan skip_all => "Neither AnyEvent, Event nor Glib installed";
}
eval { require IO::Socket::SSL };
if ( $@ ) {
plan skip_all => "IO::Socket::SSL required";
}
plan tests => 4;
require "./t/Event_RPC_Test_Server.pm";
my $PORT = Event_RPC_Test_Server->port;
my $AUTH_USER = "foo";
my $AUTH_PASS = "bar";
t/04.cnct-auth-ssl-verifypeer-wrongca.t view on Meta::CPAN
my $depend_modules = 0;
eval { require EV };
eval { require AnyEvent } && ++$depend_modules;
eval { require Event } && ++$depend_modules;
eval { require Glib } && ++$depend_modules;
if ( not $depend_modules ) {
plan skip_all => "Neither AnyEvent, Event nor Glib installed";
}
eval { require IO::Socket::SSL };
if ( $@ ) {
plan skip_all => "IO::Socket::SSL required";
}
plan tests => 5;
require "./t/Event_RPC_Test_Server.pm";
my $PORT = Event_RPC_Test_Server->port;
my $AUTH_USER = "foo";
my $AUTH_PASS = "bar";
t/04.cnct-auth-ssl-verifypeer.t view on Meta::CPAN
my $depend_modules = 0;
eval { require EV };
eval { require AnyEvent } && ++$depend_modules;
eval { require Event } && ++$depend_modules;
eval { require Glib } && ++$depend_modules;
if ( not $depend_modules ) {
plan skip_all => "Neither AnyEvent, Event nor Glib installed";
}
eval { require IO::Socket::SSL };
if ( $@ ) {
plan skip_all => "IO::Socket::SSL required";
}
plan tests => 6;
require "./t/Event_RPC_Test_Server.pm";
my $PORT = Event_RPC_Test_Server->port;
my $AUTH_USER = "foo";
my $AUTH_PASS = "bar";
t/04.cnct-auth-ssl.t view on Meta::CPAN
my $depend_modules = 0;
eval { require EV };
eval { require AnyEvent } && ++$depend_modules;
eval { require Event } && ++$depend_modules;
eval { require Glib } && ++$depend_modules;
if ( not $depend_modules ) {
plan skip_all => "Neither AnyEvent, Event nor Glib installed";
}
eval { require IO::Socket::SSL };
if ( $@ ) {
plan skip_all => "IO::Socket::SSL required";
}
plan tests => 6;
require "./t/Event_RPC_Test_Server.pm";
my $PORT = Event_RPC_Test_Server->port;
my $AUTH_USER = "foo";
my $AUTH_PASS = "bar";
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