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Connecting to a WCF Service hosted in a Windows Service

I have written a simple WCF service hosted in a Windows console application
and a simple WCF client console application that connects successfully to
that service and retrieves data. I then ported the console application to
WinForms and also got that to work properly.

My next move was to host the WCF service in a Windows service application. I
believe I have that working correctly, but I can't for the life of me get a
client to connect to the service. I did not use svcutil to generate proxy
code for the client, but instead relied on using a ChannelFactory to
instantiate my client connection to the service.

Here's the client code:

namespace MyClient
public partial class MainForm : Form
private IMyService service;

public MainForm()
InitializeCompo nent();

ChannelFactory< IMyServicefacto ry = new
ChannelFactory< IMyService>("My Service");
service = factory.CreateC hannel();
string myData = service.GetMyDa ta();
MessageBox.Show (myData);
catch (Exception ex)
MessageBox.Show (ex.Message + ex.StackTrace);

Here's the client app.config:

<?xml version="1.0" encoding="utf-8" ?>
<configuratio n>
<system.service Model>
<endpoint address="net.tc p://localhost:12345/MyService/service"
binding="netTcp Binding"
contract="Contr acts.IMyService "
name="MyService ">
</system.serviceM odel>

Here's the server app.config:

<?xml version="1.0" encoding="utf-8" ?>
<configuratio n>
<system.service Model>
<service name="MyService ">
<baseAddresse s>
baseAddress="ne t.tcp://localhost:12345/MyService/service"/>
<endpoint address=""
binding="netTcp Binding"
contract="Contr acts.IMyService ">
<endpoint address="mex"
binding="mexTcp Binding"
contract="IMeta dataExchange">
</system.serviceM odel>
<serviceBehavio rs>
<behavior name="metadataS upport">
<serviceMetadat a>
</serviceMetadata >
</serviceBehavior s>

Here's the contract code:

namespace Contracts
public interface IMyService
[OperationContra ct]
string GetMyData();

I get the following exception when invoking the service.GetMyDa ta() method:

Could not connect to net.tcp://localhost:12345/MyService/service. The
connection attempt lasted for a time span of 00:00:00.984381 3. TCP error code
10061: No connection could be made because the target machine actively
refused it.
Server stack trace:
at System.ServiceM odel.Channels.S ocketConnection Initiator.Conne ct(Uri
uri, TimeSpan timeout)
at System.ServiceM odel.Channels.B ufferedConnecti onInitiator.Con nect(Uri
uri, TimeSpan timeout)
System.ServiceM odel.Channels.C onnectionPoolHe lper.EstablishC onnection(TimeS pan timeout)
System.ServiceM odel.Channels.C lientFramingDup lexSessionChann el.OnOpen(TimeS pan timeout)
at System.ServiceM odel.Channels.C ommunicationObj ect.Open(TimeSp an timeout)
at System.ServiceM odel.Channels.S erviceChannel.O nOpen(TimeSpan timeout)
at System.ServiceM odel.Channels.C ommunicationObj ect.Open(TimeSp an timeout)
System.ServiceM odel.Channels.S erviceChannel.C allOpenOnce.Sys tem.ServiceMode l.Channels.Serv iceChannel.ICal lOnce.Call(Serv iceChannel
channel, TimeSpan timeout)
System.ServiceM odel.Channels.S erviceChannel.C allOnceManager. CallOnce(TimeSp an
timeout, CallOnceManager cascade)
at System.ServiceM odel.Channels.S erviceChannel.E nsureOpened(Tim eSpan
at System.ServiceM odel.Channels.S erviceChannel.C all(String action,
Boolean oneway, ProxyOperationR untime operation, Object[] ins, Object[] outs,
TimeSpan timeout)
at System.ServiceM odel.Channels.S erviceChannel.C all(String action,
Boolean oneway, ProxyOperationR untime operation, Object[] ins, Object[] outs)
System.ServiceM odel.Channels.S erviceChannelPr oxy.InvokeServi ce(IMethodCallM essage methodCall, ProxyOperationR untime operation)
at System.ServiceM odel.Channels.S erviceChannelPr oxy.Invoke(IMes sage

Exception rethrown at [0]:
at System.Runtime. Remoting.Proxie s.RealProxy.Han dleReturnMessag e(IMessage
reqMsg, IMessage retMsg)
at System.Runtime. Remoting.Proxie s.RealProxy.Pri vateInvoke(Mess ageData&
msgData, Int32 type)
at Contracts.IMySe rvice.GetMyData ()
at WinClient.MainF orm.GetMyData() in C:\Documents and Settings\adrian \My
Documents\Visua l Studio 2005\Projects\W CFTest\WinClien t\MainForm.cs:l ine 54

This is my first attempt at using WCF. Any help would be greatly appreciated.
Mar 19 '07 #1
0 8282

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