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using
System
;
using
System
.
Collections
.
Generic
;
using
System
.
Net
;
using
System
.
Net
.
Sockets
;
using
System
.
Threading
;
using
NetCoreServer
;
using
Xunit
;
namespace
tests
{
class
MulticastUdpClient
:
NetCoreServer
.
UdpClient
{
public
bool
Connected
{
get
;
set
;
}
public
bool
Disconnected
{
get
;
set
;
}
public
bool
Errors
{
get
;
set
;
}
public
MulticastUdpClient
(
string
address
,
int
port
)
:
base
(
address
,
port
)
{
}
protected
override
void
OnConnected
(
)
{
Connected
=
true
;
ReceiveAsync
(
)
;
}
protected
override
void
OnDisconnected
(
)
{
Disconnected
=
true
;
}
protected
override
void
OnReceived
(
EndPoint
endpoint
,
byte
[
]
buffer
,
long
offset
,
long
size
)
{
ReceiveAsync
(
)
;
}
protected
override
void
OnError
(
SocketError
error
)
{
Errors
=
true
;
}
}
class
MulticastUdpServer
:
UdpServer
{
public
bool
Started
{
get
;
set
;
}
public
bool
Stopped
{
get
;
set
;
}
public
bool
Errors
{
get
;
set
;
}
public
MulticastUdpServer
(
IPAddress
address
,
int
port
)
:
base
(
address
,
port
)
{
}
protected
override
void
OnStarted
(
)
{
Started
=
true
;
ReceiveAsync
(
)
;
}
protected
override
void
OnStopped
(
)
{
Stopped
=
true
;
}
protected
override
void
OnError
(
SocketError
error
)
{
Errors
=
true
;
}
}
public
class
UdpMulticastTests
{
[
Fact
(
DisplayName
=
"UDP server multicast test"
)
]
public
void
UdpMulticastServerTest
(
)
{
string
listenAddress
=
"0.0.0.0"
;
string
multicastAddress
=
"239.255.0.1"
;
int
multicastPort
=
3335
;
// Create and start multicast server
var
server
=
new
MulticastUdpServer
(
IPAddress
.
Any
,
0
)
;
Assert
.
True
(
server
.
Start
(
multicastAddress
,
multicastPort
)
)
;
while
(
!
server
.
IsStarted
)
Thread
.
Yield
(
)
;
// Create and connect multicast client
var
client1
=
new
MulticastUdpClient
(
listenAddress
,
multicastPort
)
;
client1
.
SetupMulticast
(
true
)
;
Assert
.
True
(
client1
.
Connect
(
)
)
;
while
(
!
client1
.
IsConnected
)
Thread
.
Yield
(
)
;
// Join multicast group
client1
.
JoinMulticastGroup
(
multicastAddress
)
;
Thread
.
Sleep
(
100
)
;
// Multicast some data to all clients
server
.
Multicast
(
"test"
)
;
// Wait for all data processed...
while
(
client1
.
BytesReceived
!=
4
)
Thread
.
Yield
(
)
;
// Create and connect multicast client
var
client2
=
new
MulticastUdpClient
(
listenAddress
,
multicastPort
)
;
client2
.
SetupMulticast
(
true
)
;
Assert
.
True
(
client2
.
Connect
(
)
)
;
while
(
!
client2
.
IsConnected
)
Thread
.
Yield
(
)
;
// Join multicast group
client2
.
JoinMulticastGroup
(
multicastAddress
)
;
Thread
.
Sleep
(
100
)
;
// Multicast some data to all clients
server
.
Multicast
(
"test"
)
;
// Wait for all data processed...
while
(
(
client1
.
BytesReceived
!=
8
)
||
(
client2
.
BytesReceived
!=
4
)
)
Thread
.
Yield
(
)
;
// Create and connect multicast client
var
client3
=
new
MulticastUdpClient
(
listenAddress
,
multicastPort
)
;
client3
.
SetupMulticast
(
true
)
;
Assert
.
True
(
client3
.
Connect
(
)
)
;
while
(
!
client3
.
IsConnected
)
Thread
.
Yield
(
)
;
// Join multicast group
client3
.
JoinMulticastGroup
(
multicastAddress
)
;
Thread
.
Sleep
(
100
)
;
// Multicast some data to all clients
server
.
Multicast
(
"test"
)
;
// Wait for all data processed...
while
(
(
client1
.
BytesReceived
!=
12
)
||
(
client2
.
BytesReceived
!=
8
)
||
(
client3
.
BytesReceived
!=
4
)
)
Thread
.
Yield
(
)
;
// Leave multicast group
client1
.
LeaveMulticastGroup
(
multicastAddress
)
;
Thread
.
Sleep
(
100
)
;
// Disconnect the multicast client
Assert
.
True
(
client1
.
Disconnect
(
)
)
;
while
(
client1
.
IsConnected
)
Thread
.
Yield
(
)
;
// Multicast some data to all clients
server
.
Multicast
(
"test"
)
;
// Wait for all data processed...
while
(
(
client1
.
BytesReceived
!=
12
)
||
(
client2
.
BytesReceived
!=
12
)
||
(
client3
.
BytesReceived
!=
8
)
)
Thread
.
Yield
(
)
;
// Leave multicast group
client2
.
LeaveMulticastGroup
(
multicastAddress
)
;
Thread
.
Sleep
(
100
)
;
// Disconnect the multicast client
Assert
.
True
(
client2
.
Disconnect
(
)
)
;
while
(
client2
.
IsConnected
)
Thread
.
Yield
(
)
;
// Multicast some data to all clients
server
.
Multicast
(
"test"
)
;
// Wait for all data processed...
while
(
(
client1
.
BytesReceived
!=
12
)
||
(
client2
.
BytesReceived
!=
12
)
||
(
client3
.
BytesReceived
!=
12
)
)
Thread
.
Yield
(
)
;
// Leave multicast group
client3
.
LeaveMulticastGroup
(
multicastAddress
)
;
Thread
.
Sleep
(
100
)
;
// Disconnect the multicast client
Assert
.
True
(
client3
.
Disconnect
(
)
)
;
while
(
client3
.
IsConnected
)
Thread
.
Yield
(
)
;
// Stop the Echo server
Assert
.
True
(
server
.
Stop
(
)
)
;
while
(
server
.
IsStarted
)
Thread
.
Yield
(
)
;
// Check the multicast server state
Assert
.
True
(
server
.
Started
)
;
Assert
.
True
(
server
.
Stopped
)
;
Assert
.
True
(
server
.
BytesSent
>
0
)
;
Assert
.
True
(
server
.
BytesReceived
==
0
)
;
Assert
.
True
(
!
server
.
Errors
)
;
// Check the multicast client state
Assert
.
True
(
client1
.
BytesSent
==
0
)
;
Assert
.
True
(
client2
.
BytesSent
==
0
)
;
Assert
.
True
(
client3
.
BytesSent
==
0
)
;
Assert
.
True
(
client1
.
BytesReceived
==
12
)
;
Assert
.
True
(
client2
.
BytesReceived
==
12
)
;
Assert
.
True
(
client3
.
BytesReceived
==
12
)
;
Assert
.
True
(
!
client1
.
Errors
)
;
Assert
.
True
(
!
client2
.
Errors
)
;
Assert
.
True
(
!
client3
.
Errors
)
;
}
[
Fact
(
DisplayName
=
"UDP server multicast random test"
)
]
public
void
UdpMulticastServerRandomTest
(
)
{
string
listenAddress
=
"0.0.0.0"
;
string
multicastAddress
=
"239.255.0.1"
;
int
multicastPort
=
3336
;
// Create and start multicast server
var
server
=
new
MulticastUdpServer
(
IPAddress
.
Any
,
0
)
;
Assert
.
True
(
server
.
Start
(
multicastAddress
,
multicastPort
)
)
;
while
(
!
server
.
IsStarted
)
Thread
.
Yield
(
)
;
// Test duration in seconds
int
duration
=
10
;
// Clients collection
var
clients
=
new
List
<
MulticastUdpClient
>
(
)
;
// Start random test
var
rand
=
new
Random
(
)
;
var
start
=
DateTime
.
UtcNow
;
while
(
(
DateTime
.
UtcNow
-
start
)
.
TotalSeconds
<
duration
)
{
// Create a new client and connect
if
(
(
rand
.
Next
(
)
%
100
)
==
0
)
{
if
(
clients
.
Count
<
100
)
{
// Create and connect Echo client
var
client
=
new
MulticastUdpClient
(
listenAddress
,
multicastPort
)
;
clients
.
Add
(
client
)
;
client
.
SetupMulticast
(
true
)
;
client
.
Connect
(
)
;
while
(
!
client
.
IsConnected
)
Thread
.
Yield
(
)
;
// Join multicast group
client
.
JoinMulticastGroup
(
multicastAddress
)
;
Thread
.
Sleep
(
100
)
;
}
}
// Connect/Disconnect the random client
else
if
(
(
rand
.
Next
(
)
%
100
)
==
0
)
{
if
(
clients
.
Count
>
0
)
{
int
index
=
rand
.
Next
(
)
%
clients
.
Count
;
var
client
=
clients
[
index
]
;
if
(
client
.
IsConnected
)
{
// Leave multicast group
client
.
LeaveMulticastGroup
(
multicastAddress
)
;
Thread
.
Sleep
(
100
)
;
client
.
Disconnect
(
)
;
while
(
client
.
IsConnected
)
Thread
.
Yield
(
)
;
}
else
{
client
.
Connect
(
)
;
while
(
!
client
.
IsConnected
)
Thread
.
Yield
(
)
;
// Join multicast group
client
.
JoinMulticastGroup
(
multicastAddress
)
;
Thread
.
Sleep
(
100
)
;
}
}
}
// Multicast a message to all clients
else
if
(
(
rand
.
Next
(
)
%
10
)
==
0
)
{
server
.
Multicast
(
"test"
)
;
}
// Sleep for a while...
Thread
.
Sleep
(
1
)
;
}
// Disconnect clients
foreach
(
var
client
in
clients
)
{
client
.
Disconnect
(
)
;
while
(
client
.
IsConnected
)
Thread
.
Yield
(
)
;
}
// Stop the multicast server
Assert
.
True
(
server
.
Stop
(
)
)
;
while
(
server
.
IsStarted
)
Thread
.
Yield
(
)
;
// Check the multicast server state
Assert
.
True
(
server
.
Started
)
;
Assert
.
True
(
server
.
Stopped
)
;
Assert
.
True
(
server
.
BytesSent
>
0
)
;
Assert
.
True
(
server
.
BytesReceived
==
0
)
;
Assert
.
True
(
!
server
.
Errors
)
;
}
}
}
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