.NET Remoting

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.NET Remoting(?????????? ?????????)
???????????? ?? .NET Framework
http//www.nakov.com/dotnet/
??????? ?????
?????????? ???????? ?? ?????????? ?? ???????
academy.devbg.org
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?????????? ??????

• ?????? ???????? ?? .NET Framework
• ?????? ???????? ?? ????? C
• ?????? ???????? ?? ?????????? ????? ? ????????
  ??????????
• ?????? ???????? ?? ???????????? ??????????? ?
  ???????
• ???????? ?? ?????????????? ? .NET

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??????????

• ????? ? .NET Remoting?
• Remoting ????????????????
• Remoting ?????? ? ?????????. ??????????? ?? ?????
• ????????? ?? ??????. ????????? ?? ???????.
  ????????? ?? ???????
• ???????????? (Marshaling). Marshal-by-Value
  ??????. Marshal-by-Reference ??????
• ????? ?? ???????? (Lifetime). ILease
• ????????? ?? Remoting ?????? ? ??????
• ????????? ? ?????? ??????
• Remoting ??????????????? ????

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???????????? ??????????

• ???????? ?????? ?????????? ?? ????????????
• ??????? ?? ?? ??????? ??????????? ??????????,
  ????? ?? ??????????????
• ?????? ?? ???????????? ??????????
• ????? "??????/??????"
• ????? "???????????? ??????"
• DCOM ?????? ?? ? Microsoft Windows
• CORBA ??????? ????????, ????? ??????
• Java RMI ?????? ?? ?? Java ????????????
• .NET Remoting ?????? ?? ? .NET Framework
• ????? "Web ??????"

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????? ? .NET Remoting?

• Remoting ???????????? ? .NET Framework ?????????
  ????????? ?????? ?? ?????????? ??????
• ?????? ?? ???? application domain
• ?????? ?? ???? ??????
• ?????? ?? ?????????? ??????
• ???????? ?? ?? ?????????? ?? ????????????? ???
  ???????????? ??????????
• .NET Framework ?????????? ??????????????
  ?????????????? ?? Remoting ????????????

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Remoting ????????????????

• .NET Remoting ???????????????? ?? ?????? ??
• ?????? ???????? ????????? ?? ? ??? ??????????
  ??????
• ????????? ??????? ? ????????? ??????????? ?
  ??????? ??????
• ?????? ??????? ???????? ???????????? ?? ??????
  ??? ???????????? ??????
• ????????? ?? ????????? ?????????? ??????????
  ???????????? ?? ??????
• ???????????? ????????? ?????? ?? ??????,
  ??????? ????????, ?????? ? ?.?.

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Remoting ???????????????? (2)
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Remoting ??????

• ???????? (channels) ? .NET Remoting
• ????????????? ????????? ?? ? ??? ??????????
  ??????
• ????? ?? ?????
• TCP ????????? ???? TCP ?????
• HTTP ????????? ????????? HTTP
• ????? ?????????? ?? ???????????
• ????????? ?? ????? ?? ???????????, ???? ? ??
  ?????????? ??????????
• ????????? TCP ???????
• ?????? ?? ????? ???????????? ????? ??????????

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??????????? ?? ?????

• ????????????? ?? Remoting ????? ???? ?? ????? ??
  2 ??????
• ???? ????? System.Runtime.Remoting.
  Channels.ChannelServices
• ???? ??????????????? ????

using System.Runtime.Remoting.Channelsusing
System.Runtime.Remoting.Channels.TcpTcpChannel
channel new TcpChannel(3333)ChannelServices.R
egisterChannel(channel)
RemotingConfiguration.Configure(
"MyClient.exe.config")
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?????????

• ??????????? (formatters) ?????????? ???????????,
  ????? ?? ???????? ?? Remoting ????????
• ??????????? ?????
• ??????? ????????
• ?????? ????????????????
• ????? ???????????? ? ????? ?????????? (??????????
  ?? .NET Remoting)
• SOAP ????????
• XML ??????? ?????? ????? ???????????? ? ?????
  ??????????
• ??-???? ????????????????

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????????? (2)

• ????????? ?? ????????????
• HTTP ???????? ????????? ?? ???????????? SOAP
  ????????
• ???? ????????? ?????????? ?? ??????????? ?????
  ???? Web ??????
• TCP ???????? ????????? ?? ???????????? ???????
  ????????
• ????? ?? ?? ??????? ? ?????

SoapServerFormatterSinkProvider provider
new SoapServerFormatterSinkProvider() IDictionary
props new Hashtable() props"port"
12345 TcpChannel chan new TcpChannel(props,
null, provider)
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????????? ?? ??????

• "?????????" ???????? ????????? ?? ????????? ?????
  (????????????) ? ?????????? ?? ?????? ??
  ??????????
• ??????????? ???? ??? ????
• ????????? ?? ?????? ?? ??????? (server-side
  activation)
• ????????? ?? ?????? ?? ??????? (client-side
  activation)
• ?????? ?? ?????????
• ???? ????????? new
• ???? Activator.GetObject()
• ???? Activator.CreateInstance()

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????????? ?? ?????? (2)

• ??? ????????? ?? ????????? ????? Remoting
  ???????????????? ????????? ??????? ?????? ????
  ??? ???????
• ?????? ?????? ???????? ???? ????????? ???? (???
  ?????????), ?? ???????? ??????????? ???
  ??????????? ?????
• ?????? ?? ??????, ????????, ??????? ? ?????
  ???????
• ????????? ?? ??????
• ???????????? ??????????
• ?? ??????????? ?????????????? ?? ?????? ?
  ?????????

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????????? ?? ???????

• ??? ????????? ?? ??????? (server-side activation)
• ???????? ??????? ??????????? ?????? ??? ?????????
  ??????
• ??? ??? ?????? ?? ???????? ?????????
• Single-Call ?? ????? ????????? ?????? ??
  ??????? ??????? ?????????
• Singleton ???? ? ???? ????????? ???????? ??????
  ???????
• ??????????? ?? ??????? ???? ??????
• ??????? ?? ??????????? ?? ???? (?????????) ??
  ?????? ???????

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????????? ?? ??????? (2)

• ???????? ?????? ?? ????? ?????, ?? ???????
  ???????? ?????????
• ???????????? ?? Single-Call server activated
  object
• ???????????? ?? Singleton server activated object

RemotingConfiguration.RegisterWellKnownServiceType
( typeof(CommonTypes.Library), "Library",
WellKnownObjectMode.SingleCall)
RemotingConfiguration.RegisterWellKnownServiceType
( typeof(CommonTypes.Library), "Library",
WellKnownObjectMode.Singleton)
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????????? ?? ???????

• ??? ????????? ?? ??????? (client-side activation)
• ???????? ?? ???????? ?? ?????? ?? ??????? (?????,
  ???????)
• ????? ?????? ?? ????????? ?? ????? ??????? ????,
  ??????? ?????????
• ????? ?????? ?????? ??? ???? ????????? ?????? ??
  ???????
• ???????????? ?? client-activated ?????

RemotingConfiguration.RegisterActivatedServiceType
( typeof(CommonTypes.Library))
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???????????? (Marshaling)

• ?????????????? ????????? ?????? ?? ?????? ?????
  Remoting ??????? ? ???????. ???????? ???
• ????????? ?? ?????????
• ??????? ?? ????????
• ?????? ?? ???????? ? ??????
• ??? 3 ???? ??????
• Marshal-by-Value ?????? ???????? ?? ?? ????????
  (?????????????)
• Marshal-by-Reference ?????? ???????? ?? ??
  ?????????? ?????????? (ObjRef)
• Not-Marshaled ?????? ?? ?? ????????

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Marshal-by-Value ??????

• Marshal-by-Value ??????
• ?????? ?????????????? ?????? (Serializable,
  ISerializable)
• ???????? ?? ?? ???????? (????? ?? ??? ?? ????????
  ?? ???????????? ??????)
• ??? ??????? ?? ??????? ???? ????????? ????? ??
  ??????
• ???????? ?? ?????? ? ???????? ?? ????????
  ???????? ?????? ?????

Serializable public struct Book public
string mAuthor public string mTitle
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Marshal-by-Reference ??????

• Marshal-by-Reference ??????
• ?????? ??????, ????? ?????????? ?????
  System.MarshalByRefObject (???????????
  ?????????????? ??????)
• ???????? ?? ?? ?????????? ??????????, ?? ????? ??
  ??????? ?????? ????
• ?????? ???????? ?? ???????? ??? ??????????? ?????
  ???? ?????? ?????
• ????? ?????? ??? ??????? ?? ???? ??? ????????
  ??????????? ?????????? ????????? ????
  ????????????????

public class Book MarshalByRefObject
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????? ?? ???????? (Lifetime)

• ? .NET Remoting ?? ???????? ?????????
  "lease-based lifetime" ("?????, ???????? ??????")
• ???????? ?? ???? ??? Singleton Server-Activated
  ?????? ? Marshal-by-Reference Client-Activated
  ??????
• ??? ????????? ?? ????? ?? ?? ???? "????? ??
  ?????"
• ???? ???????? ?? ???? ????? ??????? ?? ?????????
  ?? Garbage Collector-?
• ??????? ?? ????? ?? ????????? ??? ????????? ??
  ?????? ? ?? ???? ?? ?? ??????? ???? ????

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??????????? ILease

• InitialLeaseTime ??????? ????? (5 ???. ??
  ????????????)
• RenewOnCallTime ?????????? ?? ?????? ???
  ????????? (2 ???.)
• SponsorshipTimeout ????????? ?? ?. ???.
  "????????" (2 ???.)
• CurrentLeaseTime ???????? ?????
• CurrentState ????????? ?? ??????? ?? ?????
  (Initial, Active, Expired, Renewing)

ClientActivatedType caObject new
ClientActivatedType() ILease serverLease
(ILease) RemotingServices.GetLifetimeService(c
aObject) serverLease.RenewOnCallTime new
TimeSpan(0, 10, 0) // 10 min.
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????????? ?? Remoting ??????

1. ???????????? ?? Remoting ?????
2. ???????????? ?? ????????, ????? ?? ????? ????????
   ??????????
3. ????????? ?? ????????? ????? (?? ?? ?? ???????
   ????????????)

TcpChannel channel new TcpChannel(12345) Channe
lServices.RegisterChannel(channel)
RemotingConfiguration.RegisterWellKnownServiceType
( typeof(CommonTypes.Library), "Library",
WellKnownObjectMode.Singleton)
Console.ReadLine() // ??? System.Threading.Threa
d.CurrentThread.Suspend()
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????????? ?? Remoting ??????

• ???????????? ?? Remoting ?????
• ?????????? ?? ????????? ?????
• ??? ????
• ?????????? ?? ??????????? ?????

TcpChannel channel new TcpChannel() ChannelServ
ices.RegisterChannel(channel)
Library remoteLibrary (Library)
Activator.GetObject(typeof(Library),
"tcp//localhost12345/Library")
RemotingConfiguration.RegisterWellKnownClientType(
typeof(CommonTypes.Library),
"tcp//localhost12345/Library") Library
remoteLibrary new Library()
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????????? ? ?????? ??????

• ???????????? ??? Remoting ?????? ?????? ?? ??
  ???????? ???????????? ?? ??????? ? ?? ???????
• ??? ??????? ???????
• ?????? ?????? ?? ??????? ? ??????? ??????? (.DLL
  ????)
• ? Class Library ?????? ??? VS.NET
• ?????? ?? ?????????? ??? ???? DLL
• ?????? ?????? ?? ????????? ???? ??????????, ?????
  ?? ??????? ? ??????? ???????

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???????????? 1

• ?????????? ?????? ????? Remoting ??????????
  (?????? ??????)

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?????? ?????????????

• ??????????????? ?? Remoting ???????????????? ????
  ?? ????? ? ?????? ?? ???????????? ????
• ????????????????? ???? ???? ?? ???????
• ?????? ? ?????????
• ????? ?? ????? (lease-based lifetime)
• ??????????? ?? ????????? ??????
• ??????????? ?? ?????????? ??????
• ??????? ?? ????????? (???????)

RemotingConfiguration.Configure("MyConfig.xml")
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Remoting ??????????????? ???? ??????
ltconfigurationgt  ltsystem.runtime.remotinggt    lta
pplicationgt      ltservicegt        lt!-- set the
activation mode, remotable object
and its URL --gt        ltwellknown
mode"Singleton" type"CommonTypes.Libr
ary" objectUri"Library"
/gt      lt/servicegt       ltchannelsgt        lt!--
set the channel and port --gt        ltchannel
ref"tcp" port"12345" /gt      lt/channelsgt    lt/
applicationgt  lt/system.runtime.remotinggtlt/config
urationgt
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.NET Remoting(?????????? ?????????)
????????
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??????????

1. ???????? ????????? ????????? ?? .NET Remoting
   ???????????????? ??????, ?????????, ??????
   ?????????, ?????? ???????????? ? ?????? ????? ??
   ????????.
2. ???????????? ??????-?????? ?????????? ??
   ????????? ? ?????? ????? (chat), ???????? ?? .NET
   Remoting. ??????????? TCP ?????, ???????
   ????????, ???????????? ?? ?????????? ? Singleton
   ????????? ?? ???????. ???????? ?????? ?? ????????
   ?????? ?? ?????????? ??? ???? ??????????? ? ??
   ????????? ??????? ????????? (chat ?????)
   ????????????. ???????? (Windows Forms ??????????)
   ?????? ?? ???? ?? ??????? chat ?????, ?? ???????
   ????????? ?? ??????? ??????????? ? ?? ???????
   chat ?????.

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??????????

1. ???????????? ??????-?????? ??????????, ????????
   ?? .NET Remoting ???????????? ?? ?????????? ??
   ?????????? ? ?????? ??? ??????. ???????? ??????
   ?? ???????? ?????????? ????????? ?? ????????,
   ????????? ?? ???????? ?? ????? ?????, ???????? ??
   ?????, ???????? ?? ??????, ????????? ?? ?????,
   ????????? ?? ??????, ??????????? ?? ?????? ? ????
   ?????. ???????? ?? ????? ?? ????? ??????? ???? ?
   ????. ??????????? ????????? ??????? ?? ??????????
   ?? ???????? ??? ????????. ???????? ?????? ?? ?
   Windows Forms ?????????? ? ?? ??????????
   ????????? ??? ?????????? ????????. ???????????
   HTTP ?????, SOAP ????????, ????????? ?? ??????? ?
   ???????????? ?? ????????. ??????????????? ??
   ??????? ? ??????? ?????? ?? ????? ? ?????? ????.

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?????????? ??????????

• ????? ????????, Remoting http//www.nakov.
  com/dotnet/2003/lectures/Remoting.doc
• Lester Temple, Introduction to .NET Remoting
  http//www.ilmservice.com/twincitiesnet/Presentati
  ons/RemotingIntro.ppt
• MSDN Library http//msdn.microsoft.com