Proxy on Http Bindings - c#

I have a web application connects web service on a machine uses proxy server. Connections are ok on internet explorer as shown in image
And my web.config is:
<system.net>
<defaultProxy>
<proxy autoDetect="true" usesystemdefault="true"/>
</defaultProxy>
</system.net>
<system.serviceModel>
<bindings>
<basicHttpBinding>
<binding name="ProcessSoap" closeTimeout="00:01:00" openTimeout="00:01:00"
receiveTimeout="00:10:00" sendTimeout="00:01:00" allowCookies="false"
useDefaultWebProxy="true" hostNameComparisonMode="StrongWildcard"
maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536"
messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
>
<readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
maxBytesPerRead="4096" maxNameTableCharCount="16384" />
<security mode="None">
</security>
</binding>
</basicHttpBinding>
</bindings>
<client>
<endpoint address="http://www.serveraddressthatiwanttoconnect.com/services/WebService.asmx"
binding="basicHttpBinding" bindingConfiguration="ProcessSoap"
contract="PINAlmaServis.ProcessSoap" name="ProcessSoap" />
</client>
I want to use system proxy settings, because it can change time to time. "kurumsalproxy" is a machine name on local network. I tried every potential variations for web.config on http://msdn.microsoft.com/en-us/library/kd3cf2ex.aspx but can not establish to connect.
Is there something that i miss?

I want to use system proxy settings
There is no “system” proxy settings. Every user owns personal proxy configuration. You could create a user with the proxy configuration and change app pool identity to use that account.
UPDATE: How to use the proxy used in Internet Explorer in an ASP.NET application

I don't think you need to change application pool identity, if you carefully read this server fault thread,
https://serverfault.com/questions/34940/how-do-i-configure-proxy-settings-for-local-system
You need to configure the proxy setting for system accounts (local system, local service, and network service) if your application pool identity is Network Service.

Related

WCF basicHttpBinding configuration is being ignored

I'm having an issue with my basicHttpBinding configuration in web.config file, all configuration was configured through "Edit WCF configration" VS2013 tool, but when I called method in "WCFTestClient" tool it returned:
The maximum message size quota for incoming messages (65536) has been exceeded.
I know that my configuration is OK and it's being ignored because when I open that config "WCFTestClient" tool it shows me different values, default values. Then why MS is offering that configuration if it's being ignored brutally, that's stupid, I guess. But the main question would be, how can I resolve it, or to tell him to take my configuration not his, compiled from somewhere?
P.S my Web.config basicHttpBinding
<basicHttpBinding>
<binding name="BindingConfiguration" closeTimeout="01:50:00"
openTimeout="01:50:00" receiveTimeout="01:50:00" sendTimeout="01:50:00"
maxBufferSize="2147483647" maxReceivedMessageSize="2147483647">
<readerQuotas maxDepth="128" maxStringContentLength="8388608"
maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384" />
</binding>
</basicHttpBinding>
and usage:
<endpoint address="PersonService" binding="basicHttpBinding"
bindingConfiguration="BindingConfiguration" name="PersonSvcBasicHttpBinding"
contract="WebService.IPersonService" />
Usually having both maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647" works for me.

Force by config to use tls 1.0 in a wcf client c#

We have a web app that has a client implemented with WCF. This client uses SSL_LVL3 to make the handshake with an external service. It turns out that the service just disabled the SSL_LVL3, so we need to change it to TLS 1.0.
There is a way to force TLS security in C#:
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls;
But it changes the security of all the services that are used by the app and not all the services accept TLS.
What we would like is to change the web.config to force the WCF service to use TLS. Is there any way to do this?
This is the binding of the service:
<binding name="XXXX" closeTimeout="00:01:00" openTimeout="00:01:00"
receiveTimeout="00:10:00" sendTimeout="00:01:00" allowCookies="false"
bypassProxyOnLocal="false" NameComparisonMode= "StrongWildcard"
maxBufferPoolSize="524288" maxBufferSize="655360"
maxReceivedMessageSize="655360" textEncoding="utf-8"
transferMode="Buffered" useDefaultWebProxy="true"
messageEncoding="Text">
<security mode="Transport" />
</binding>
<customBinding >
<binding name="CusSoap">
<sslStreamSecurity requireClientCertificate="true" sslProtocols="Ssl3|Tls|Tls11|Tls12" />
</binding>
But it is available in Visual Studio 2015(.Net Framework 4.5.2)

WCF NetTCPBinding in a Load Balanced Environment; what is the correct configuration?

I have been battling to resolve wcf issues on our production servers. One of the errors thrown is "The server rejected the upgrade request." among other weird errors I'm receiving. Our applications runs on the Citrix environment for the front end and our application servers host our WCF Services. We have two application servers set up for load balancing and this KEMP server supports sticky ip's since we are using nettcpbinding. However, I am not sure if we have configured our NetTCP settings correctly as the application frequently uses 100% CPU, when more than 5 users log onto an application. After an iisreset, it takes about an hour for this to re-occur. Please find below the configuration of the NETTcpBinding below:
<bindings>
<netTcpBinding>
<binding name="NetTcpLargeBindingEndpoint"
closeTimeout="00:05:00"
openTimeout="00:05:00"
receiveTimeout="00:15:00"
sendTimeout="00:15:00"
transactionFlow="false"
transferMode="Buffered"
transactionProtocol="OleTransactions"
hostNameComparisonMode="StrongWildcard"
maxBufferPoolSize="2147483647"
maxBufferSize="2147483647"
maxReceivedMessageSize="2147483647"
listenBacklog="10"
portSharingEnabled="false"
>
<reliableSession enabled="false"/>
<readerQuotas maxArrayLength="2147483647" maxStringContentLength="2147483647" />
<security mode="Transport">
<transport clientCredentialType="Windows" />
<message clientCredentialType="UserName" algorithmSuite="Default" />
</security>
</binding>
</netTcpBinding>
</bindings>
I have tried searching articles for the correct settings to have for nettcpbindng, but not luck and the most helpful is this msdn article:
https://msdn.microsoft.com/en-us/library/vstudio/hh273122(v=vs.100).aspx
Is there something I'm doing wrong in these settings? Please assist

WCF Authentication Error

I'm accessing a third party WCF service (I have no access to the service configuration) We're using SSL certificates for the authentication.
I'm getting this error when trying to access to any of the provided methods
The HTTP request is unauthorized with client authentication scheme 'Negotiate'. The
authentication header received from the server was 'Negotiate,NTLM
I checked many google links and no luck so far- No idea what else to check on my side.
EDIT
Here is the configuration
<system.serviceModel>
<bindings>
<wsHttpBinding>
<binding name="wsHttpBinding" closeTimeout="00:01:00" openTimeout="00:01:00"
receiveTimeout="00:10:00" sendTimeout="00:01:00" bypassProxyOnLocal="false"
transactionFlow="false" hostNameComparisonMode="StrongWildcard"
maxBufferPoolSize="524288" maxReceivedMessageSize="65536"
messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true"
allowCookies="false">
<readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
maxBytesPerRead="4096" maxNameTableCharCount="16384" />
<reliableSession ordered="true" inactivityTimeout="00:10:00"
enabled="false" />
<security mode="Transport">
<transport clientCredentialType="Windows" proxyCredentialType="None"
realm="" />
<message clientCredentialType="Windows" negotiateServiceCredential="true"
establishSecurityContext="true" />
</security>
</binding>
</wsHttpBinding>
</bindings>
<client>
<endpoint address="https://url"
binding="wsHttpBinding" bindingConfiguration="wsHttpBinding"
contract="IApiWS" name="wsHttpBinding">
</endpoint>
</client>
</system.serviceModel>
Try setting your clientCredentialType="Windows" to clientCredentialType="Certificate" I usually use hard-coded WCF config, not config file, so I'm not really sure on this, but either way, take a look at the following link: Selecting a Credential Type on MSDN.
Good luck. I'm surprised what/whom you're connecting to didn't give explicit endpoint connection instructions, but hey, you deal with every kind when working with 3rd-party stuff.
Ok, this may be a little vague so I aplogise in advance, essentially the server is telling you you are not authorised, normally for this you would add something like the below onto the proxy you generated
svc.ClientCredentials.Windows.AllowedImpersonationLevel = System.Security.Principal.TokenImpersonationLevel.Impersonation;
where svc is your generated proxy. I have also seen this on a misconfigured IIS hosted endpoint where the virtual folder does not have allow anonymous set (though you say you cannot access the service configuration so that may not be to helpful). hope this helps
edit added more info,
It may be, depending on security, that a setting similar to below may be more usefull
svc.ClientCredentials.Windows.AllowedImpersonationLevel = System.Security.Principal.TokenImpersonationLevel.Anonymous;
Edit 2
The config above shows that the wsHttpBinding you are using has Windows set as clientCredentialtype for the transport security and user authentication, this mean that you will be sending through the credentials of the currently logged on user to the service for authentication using NTLM (as negotiateServiceCredentials is true) have you confirmed that the user logged on has rights on the service?

Workflow as WCF Service Unexpectedly stops

We have a .Net 3.5 Workflow hosted as a service that sometimes stops unexpectedly. This has occurred at times while it is writing a file and, most recently, when receiving a reply from another WCF service. There are no exceptions being caught, as these all get logged, and there are no messages in the event logs on the server where both are hosted. I added logging to verify that the service is completing it's logic, which it is (taking about 6 minutes). All my timeouts are far higher than they need be. I'm starting to think the issue might be that the channel is getting closed and, due to the very high timeouts, an error is not yet thrown. Of potential relevance, the workflow is calling the wcf service asynchronously and then using a WaitOne() on the AsyncWaitHandle. I have a feeling this is maybe not the best idea, but I'm not sure if it could cause this issue. Also, persistence is not set up on the workflow (I had previously thought that the unloadOnIdle setting might have been causing issues with getting return values from the called service, as I'm not very clear on how this is supposed to work).
Any help/advice would be greatly appreciated.
Have you checked the timeout settings on the client. I know in the past I had to update both the client timeout settings as well as the server settings.
In the workflow App.config (missing a timeout for the hosting of the workflow?):
<bindings>
<basicHttpBinding>
<binding name="BasicHttpBinding_IService" closeTimeout="00:02:00"
openTimeout="00:02:00" receiveTimeout="04:00:00" sendTimeout="04:00:00"
allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
maxBufferSize="655360000" maxBufferPoolSize="2147483647" maxReceivedMessageSize="655360000"
messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
useDefaultWebProxy="true">
<readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
maxBytesPerRead="4096" maxNameTableCharCount="16384" />
<security mode="None">
<transport clientCredentialType="None" proxyCredentialType="None"
realm="" />
<message clientCredentialType="UserName" algorithmSuite="Default" />
</security>
</binding>
</basicHttpBinding>
</bindings>
<client>
<endpoint address="http://url/Service.svc"
binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_IService"
contract="DALService.IService" name="BasicHttpBinding_IService" />
</client>
In the DalService WCF web.config:
<httpRuntime
maxRequestLength="1048576"
executionTimeout="6000000"
/>
<basicHttpBinding>
<binding name ="LargeMessageBinding"
closeTimeout="00:01:00"
openTimeout="00:01:00" receiveTimeout="04:30:00" sendTimeout="04:30:00"
allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
maxBufferSize="655360000" maxBufferPoolSize="524288" maxReceivedMessageSize="655360000"
messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
useDefaultWebProxy="true"
/>
<!--maxReceivedMessageSize="6553600" -->
<!--maxBufferSize="6553600" -->
Turns out, the workflow was not being hosted in its own worker process, as I had thought. Another app was crashing the process. The WCF service was correctly configured to use its own worker process, hence it would correctly return, but to a no longer running app.

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