1Test::POE::Client::TCP(U3s)er Contributed Perl DocumentatTieosnt::POE::Client::TCP(3)
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NAME

6       Test::POE::Client::TCP - A POE Component providing TCP client services
7       for test cases
8

VERSION

10       version 1.26
11

SYNOPSIS

13         use strict;
14         use Socket;
15         use Test::More tests => 15;
16         use POE qw(Wheel::SocketFactory Wheel::ReadWrite Filter::Line);
17         use Test::POE::Client::TCP;
18
19         my @data = (
20           'This is a test',
21           'This is another test',
22           'This is the last test',
23         );
24
25         POE::Session->create(
26           package_states => [
27               'main' => [qw(
28                               _start
29                               _accept
30                               _failed
31                               _sock_in
32                               _sock_err
33                               testc_registered
34                               testc_connected
35                               testc_disconnected
36                               testc_input
37                               testc_flushed
38               )],
39           ],
40           heap => { data => \@data, },
41         );
42
43         $poe_kernel->run();
44         exit 0;
45
46         sub _start {
47           my ($kernel,$heap) = @_[KERNEL,HEAP];
48           $heap->{listener} = POE::Wheel::SocketFactory->new(
49               BindAddress    => '127.0.0.1',
50               SuccessEvent   => '_accept',
51               FailureEvent   => '_failed',
52               SocketDomain   => AF_INET,             # Sets the socket() domain
53               SocketType     => SOCK_STREAM,         # Sets the socket() type
54               SocketProtocol => 'tcp',               # Sets the socket() protocol
55               Reuse          => 'on',                # Lets the port be reused
56           );
57           $heap->{testc} = Test::POE::Client::TCP->spawn();
58           return;
59         }
60
61         sub _accept {
62           my ($kernel,$heap,$socket) = @_[KERNEL,HEAP,ARG0];
63           my $wheel = POE::Wheel::ReadWrite->new(
64               Handle       => $socket,
65               InputEvent   => '_sock_in',
66               ErrorEvent   => '_sock_err',
67           );
68           $heap->{wheels}->{ $wheel->ID } = $wheel;
69           return;
70         }
71
72         sub _failed {
73           my ($kernel,$heap,$operation,$errnum,$errstr,$wheel_id) = @_[KERNEL,HEAP,ARG0..ARG3];
74           die "Wheel $wheel_id generated $operation error $errnum: $errstr\n";
75           return;
76         }
77
78         sub _sock_in {
79           my ($heap,$input,$wheel_id) = @_[HEAP,ARG0,ARG1];
80           pass('Got input from client');
81           $heap->{wheels}->{ $wheel_id }->put( $input ) if $heap->{wheels}->{ $wheel_id };
82           return;
83         }
84
85         sub _sock_err {
86           my ($heap,$wheel_id) = @_[HEAP,ARG3];
87           pass('Client disconnected');
88           delete $heap->{wheels}->{ $wheel_id };
89           return;
90         }
91
92         sub testc_registered {
93           my ($kernel,$sender,$object) = @_[KERNEL,SENDER,ARG0];
94           pass($_[STATE]);
95           my $port = ( sockaddr_in( $_[HEAP]->{listener}->getsockname() ) )[0];
96           $kernel->post( $sender, 'connect', { address => '127.0.0.1', port => $port } );
97           return;
98         }
99
100         sub testc_connected {
101           my ($kernel,$heap,$sender) = @_[KERNEL,HEAP,SENDER];
102           pass($_[STATE]);
103           $kernel->post( $sender, 'send_to_server', $heap->{data}->[0] );
104           return;
105         }
106
107         sub testc_flushed {
108           pass($_[STATE]);
109           return;
110         }
111
112         sub testc_input {
113           my ($heap,$input) = @_[HEAP,ARG0];
114           pass('Got something back from the server');
115           my $data = shift @{ $heap->{data} };
116           ok( $input eq $data, "Data matched: '$input'" );
117           unless ( scalar @{ $heap->{data} } ) {
118             $heap->{testc}->terminate();
119             return;
120           }
121           $poe_kernel->post( $_[SENDER], 'send_to_server', $heap->{data}->[0] );
122           return;
123         }
124
125         sub testc_disconnected {
126           my ($heap,$state) = @_[HEAP,STATE];
127           pass($state);
128           delete $heap->{wheels};
129           delete $heap->{listener};
130           $heap->{testc}->shutdown();
131           return;
132         }
133

DESCRIPTION

135       Test::POE::Client::TCP is a POE component that provides a TCP client
136       framework for inclusion in client component test cases, instead of
137       having to roll your own.
138
139       Once registered with the component, a session will receive events
140       related to connections made, disconnects, flushed output and input from
141       the specified server.
142

CONSTRUCTOR

144       "spawn"
145           Takes a number of optional arguments:
146
147             'alias', set an alias on the component;
148             'address', the remote address to connect to;
149             'port', the remote port to connect to;
150             'options', a hashref of POE::Session options;
151             'filter', specify a POE::Filter to use for client connections, default is POE::Filter::Line;
152             'inputfilter', specify a POE::Filter for client input;
153             'outputfilter', specify a POE::Filter for output to clients;
154             'localaddr', specify that connections be made from a particular local address;
155             'localport', specify that connections be made from a particular port;
156             'autoconnect', set to a true value to make the poco connect immediately;
157             'prefix', specify an event prefix other than the default of 'testc';
158             'timeout', specify number of seconds to wait for socket timeouts;
159             'context', anything that can fit into a scalar, such as a ref, etc.
160             'usessl', enable SSL/TLS if POE::Component::SSLify is available;
161             'sslctx', set to a SSL Context to configure the SSL Connection;
162             'sslcert', set to a x509 Certificate(PEM encoded) to connect using a client cert;
163             'sslkey', set to a private Key(PEM encoded) to connect using a client cert;
164
165           The semantics for "filter", "inputfilter" and "outputfilter" are
166           the same as for POE::Component::Server::TCP in that one may provide
167           either a "SCALAR", "ARRAYREF" or an "OBJECT".
168
169           If the component is "spawn"ed within another session it will
170           automatically "register" the parent session to receive "all"
171           events.
172
173           "address" and "port" are optional within "spawn", but if they
174           aren't specified they must be provided to subsequent "connect"s. If
175           "autoconnect" is specified, "address" and "port" must also be
176           defined.
177
178           "usessl" is dependent on whether POE::Component::SSLify is
179           available.
180

METHODS

182       "connect"
183           Initiates a connection to the given server. Takes a number of
184           parameters:
185
186             'address', the remote address to connect to;
187             'port', the remote port to connect to;
188             'localaddr', specify that connections be made from a particular local address, optional;
189             'localport', specify that connections be made from a particular port, optional;
190             'usessl', enable SSL/TLS if POE::Component::SSLify is available;
191
192           "address" and "port" are optional if they have been already
193           specified during "spawn".
194
195       "session_id"
196           Returns the POE::Session ID of the component.
197
198       "shutdown"
199           Terminates the component. It will terminate any pending connects or
200           connections.
201
202       "server_info"
203           Retrieves socket information about the current connection. In a
204           list context it returns a list consisting of, in order, the server
205           address, the server TCP port, our address and our TCP port. In a
206           scalar context it returns a HASHREF with the following keys:
207
208             'peeraddr', the server address;
209             'peerport', the server TCP port;
210             'sockaddr', our address;
211             'sockport', our TCP port;
212
213       "send_to_server"
214           Send some output to the connected server. The first parameter is a
215           string of text to send. This parameter may also be an arrayref of
216           items to send to the client. If the filter you have used requires
217           an arrayref as input, nest that arrayref within another arrayref.
218
219       "disconnect"
220           Places the server connection into pending disconnect state. Set
221           this, then send an applicable message to the server using
222           "send_to_server()" and the server connection will be terminated.
223
224       "terminate"
225           Immediately disconnects a server connection.
226
227       "wheel"
228           Returns the underlying POE::Wheel::ReadWrite object if we are
229           currently connected to a server, "undef" otherwise.  You can use
230           this method to call methods on the wheel object to switch filters,
231           etc. Exercise caution.
232
233       "alias"
234           Returns the currently configured alias.
235
236       "context"
237           Returns whatever was provided as "context" when the component was
238           spawned. If nothing was provided then it returns nothing.
239

INPUT EVENTS

241       These are events that the component will accept:
242
243       "register"
244           Takes N arguments: a list of event names that your session wants to
245           listen for, minus the 'testc_' prefix.
246
247           Registering for 'all' will cause it to send all TESTC-related
248           events to you; this is the easiest way to handle it.
249
250       "unregister"
251           Takes N arguments: a list of event names which you don't want to
252           receive. If you've previously done a 'register' for a particular
253           event which you no longer care about, this event will tell the poco
254           to stop sending them to you. (If you haven't, it just ignores you.
255           No big deal).
256
257       "connect"
258           Initiates a connection to the given server. Takes a number of
259           parameters:
260
261             'address', the remote address to connect to;
262             'port', the remote port to connect to;
263             'localaddr', specify that connections be made from a particular local address, optional;
264             'localport', specify that connections be made from a particular port, optional;
265
266           "address" and "port" are optional if they have been already
267           specified during "spawn".
268
269       "shutdown"
270           Terminates the component. It will terminate any pending connects or
271           connections.
272
273       "send_to_server"
274           Send some output to the connected server. The first parameter is a
275           string of text to send. This parameter may also be an arrayref of
276           items to send to the client. If the filter you have used requires
277           an arrayref as input, nest that arrayref within another arrayref.
278
279       "disconnect"
280           Places the server connection into pending disconnect state. Set
281           this, then send an applicable message to the server using
282           "send_to_server()" and the server connection will be terminated.
283
284       "terminate"
285           Immediately disconnects a server connection.
286

OUTPUT EVENTS

288       The component sends the following events to registered sessions. If you
289       have changed the "prefix" option in "spawn" then substitute "testc"
290       with the event prefix that you specified.
291
292       "testc_registered"
293           This event is sent to a registering session. ARG0 is the
294           Test::POE::Client::TCP object.
295
296       "testc_socket_failed"
297           Generated if the component cannot make a socket connection.  ARG0
298           contains the name of the operation that failed.  ARG1 and ARG2 hold
299           numeric and string values for $!, respectively.
300
301       "testc_connected"
302           Generated whenever a connection is established. ARG0 is the
303           server's IP address, ARG1 is the server's TCP port.  ARG3 is our IP
304           address and ARG4 is our socket port.
305
306       "testc_disconnected"
307           Generated whenever we disconnect from the server.
308
309       "testc_input"
310           Generated whenever the server sends us some traffic. ARG0 is the
311           data sent ( tokenised by whatever POE::Filter you specified ).
312
313       "testc_flushed"
314           Generated whenever anything we send to the server is actually
315           flushed down the 'line'.
316

KUDOS

318       Contains code borrowed from POE::Component::Server::TCP by Rocco
319       Caputo, Ann Barcomb and Jos Boumans.
320

SEE ALSO

322       POE
323
324       POE::Component::Server::TCP
325

AUTHOR

327       Chris Williams <chris@bingosnet.co.uk>
328
330       This software is copyright (c) 2018 by Chris Williams, Rocco Caputo,
331       Ann Barcomb and Jos Boumans.
332
333       This is free software; you can redistribute it and/or modify it under
334       the same terms as the Perl 5 programming language system itself.
335
336
337
338perl v5.30.1                      2020-01-30         Test::POE::Client::TCP(3)
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