Idiomatic way to change web service endpoint at runtime.

[Andy]

If I use Visual Studio.Net 2003 to generate "web references" for clients
using either sproxy.exe (for C++) client or wsdl.exe (for C#) clients, the
web service endpoint gets "baked" into the generated code, making it
difficult, if not impossible, to change the server that the client connects
to at runtime.

e.g. sproxy.exe generated code that looks like this ...

static const _soapmap __CCluProvider_GetCertificate_atlsoapheader_map =
{
0xF0E178D2,
"GetCertificate",
L"GetCertificateResponse",
sizeof("GetCertificate")-1,
sizeof("GetCertificateResponse")-1,
SOAPMAP_HEADER,
__CCluProvider_GetCertificate_atlsoapheader_entrie s,
0,
0,
-1,
SOAPFLAG_NONE | SOAPFLAG_PID | SOAPFLAG_DOCUMENT | SOAPFLAG_LITERAL,
0x2C42131A,
"http://localhost/CluServer/",
L"http://localhost/CluServer/",
sizeof("http://localhost/CluServer/")-1
};

and wsdl.exe generate code like this ...

/// <remarks/>
[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("c ode")]
[System.Web.Services.WebServiceBindingAttribute(Nam e="CluProviderSoap",
Namespace="http://localhost/CluServer/")]
public class CluProvider :
System.Web.Services.Protocols.SoapHttpClientProtoc ol {

/// <remarks/>
public CluProvider() {
this.Url = "http://localhost/CluServer/CluProvider.asmx";
}

/// <remarks/>

[System.Web.Services.Protocols.SoapDocumentMethodAt tribute("http://localhost
/CluServer/CanConnect", RequestNamespace="http://localhost/CluServer/",
ResponseNamespace="http://localhost/CluServer/",
Use=System.Web.Services.Description.SoapBindingUse .Literal,
ParameterStyle=System.Web.Services.Protocols.SoapP arameterStyle.Wrapped)]
public bool CanConnect() {
object[] results = this.Invoke("CanConnect", new object[0]);
return ((bool)(results[0]));
}
Is there an elegent, idiomatic technique for changing the server endpoint at
runtime with these "generated" proxies or is it necessary to 'hand craft'
your own proxy code if you want to change the server at runtime?

Changing the server endpoint at runtime seems like a reasonable thing to
want to do, or have I missed something?

Andy

[Nathan Craddock]

You can either set the type to dynamic in the web reference in VS.Net, or
you can use the publicly accessible "Url" property on the generated class to
change the url at runtime prior to executing web methods on it.

I.E:

MyClientClass o = new MyClientClass();
o.Url = "http://MyServer/MyWebService.asmx";
o.MyWebMethod();

"Andy" <ar******@hotmail.com> wrote in message
news:eC**************@TK2MSFTNGP12.phx.gbl...

If I use Visual Studio.Net 2003 to generate "web references" for clients
using either sproxy.exe (for C++) client or wsdl.exe (for C#) clients, the
web service endpoint gets "baked" into the generated code, making it
difficult, if not impossible, to change the server that the client
connects
to at runtime.

e.g. sproxy.exe generated code that looks like this ...

static const _soapmap __CCluProvider_GetCertificate_atlsoapheader_map =
{
0xF0E178D2,
"GetCertificate",
L"GetCertificateResponse",
sizeof("GetCertificate")-1,
sizeof("GetCertificateResponse")-1,
SOAPMAP_HEADER,
__CCluProvider_GetCertificate_atlsoapheader_entrie s,
0,
0,
-1,
SOAPFLAG_NONE | SOAPFLAG_PID | SOAPFLAG_DOCUMENT | SOAPFLAG_LITERAL,
0x2C42131A,
"http://localhost/CluServer/",
L"http://localhost/CluServer/",
sizeof("http://localhost/CluServer/")-1
};

and wsdl.exe generate code like this ...

/// <remarks/>
[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("c ode")]
[System.Web.Services.WebServiceBindingAttribute(Nam e="CluProviderSoap",
Namespace="http://localhost/CluServer/")]
public class CluProvider :
System.Web.Services.Protocols.SoapHttpClientProtoc ol {

/// <remarks/>
public CluProvider() {
this.Url = "http://localhost/CluServer/CluProvider.asmx";
}

/// <remarks/>

[System.Web.Services.Protocols.SoapDocumentMethodAt tribute("http://localhost
/CluServer/CanConnect", RequestNamespace="http://localhost/CluServer/",
ResponseNamespace="http://localhost/CluServer/",
Use=System.Web.Services.Description.SoapBindingUse .Literal,
ParameterStyle=System.Web.Services.Protocols.SoapP arameterStyle.Wrapped)]
public bool CanConnect() {
object[] results = this.Invoke("CanConnect", new object[0]);
return ((bool)(results[0]));
}
Is there an elegent, idiomatic technique for changing the server endpoint
at
runtime with these "generated" proxies or is it necessary to 'hand craft'
your own proxy code if you want to change the server at runtime?

Changing the server endpoint at runtime seems like a reasonable thing to
want to do, or have I missed something?

Andy

[Andy]

> You can either set the type to dynamic in the web reference in VS.Net, or

I will try that and see what the generated code looks like.

you can use the publicly accessible "Url" property on the generated class to

Hmmm. Does that really work?
I thought about that but when I saw all of the string literals 'baked in' to
the proxy code I thought it would be unlikely to work.

Andy

"Nathan Craddock" <na*************@xtoenergy.com> wrote in message
news:OL**************@TK2MSFTNGP15.phx.gbl... You can either set the type to dynamic in the web reference in VS.Net, or
you can use the publicly accessible "Url" property on the generated class to change the url at runtime prior to executing web methods on it.

I.E:

MyClientClass o = new MyClientClass();
o.Url = "http://MyServer/MyWebService.asmx";
o.MyWebMethod();

"Andy" <ar******@hotmail.com> wrote in message
news:eC**************@TK2MSFTNGP12.phx.gbl...

If I use Visual Studio.Net 2003 to generate "web references" for clients
using either sproxy.exe (for C++) client or wsdl.exe (for C#) clients, the web service endpoint gets "baked" into the generated code, making it
difficult, if not impossible, to change the server that the client
connects
to at runtime.

e.g. sproxy.exe generated code that looks like this ...

static const _soapmap __CCluProvider_GetCertificate_atlsoapheader_map =
{
0xF0E178D2,
"GetCertificate",
L"GetCertificateResponse",
sizeof("GetCertificate")-1,
sizeof("GetCertificateResponse")-1,
SOAPMAP_HEADER,
__CCluProvider_GetCertificate_atlsoapheader_entrie s,
0,
0,
-1,
SOAPFLAG_NONE | SOAPFLAG_PID | SOAPFLAG_DOCUMENT | SOAPFLAG_LITERAL,
0x2C42131A,
"http://localhost/CluServer/",
L"http://localhost/CluServer/",
sizeof("http://localhost/CluServer/")-1
};

and wsdl.exe generate code like this ...

/// <remarks/>
[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("c ode")]
[System.Web.Services.WebServiceBindingAttribute(Nam e="CluProviderSoap", Namespace="http://localhost/CluServer/")]
public class CluProvider :
System.Web.Services.Protocols.SoapHttpClientProtoc ol {

/// <remarks/>
public CluProvider() {
this.Url = "http://localhost/CluServer/CluProvider.asmx";
}

/// <remarks/>

[System.Web.Services.Protocols.SoapDocumentMethodAt tribute("http://localhost /CluServer/CanConnect", RequestNamespace="http://localhost/CluServer/",
ResponseNamespace="http://localhost/CluServer/",
Use=System.Web.Services.Description.SoapBindingUse .Literal,
ParameterStyle=System.Web.Services.Protocols.SoapP arameterStyle.Wrapped)] public bool CanConnect() {
object[] results = this.Invoke("CanConnect", new object[0]);
return ((bool)(results[0]));
}
Is there an elegent, idiomatic technique for changing the server endpoint at
runtime with these "generated" proxies or is it necessary to 'hand craft' your own proxy code if you want to change the server at runtime?

Changing the server endpoint at runtime seems like a reasonable thing to
want to do, or have I missed something?

Andy

[Nathan Craddock]

The VS.Net web reference thing is pretty much just a placeholder for
settings so it can run WSDL when you do "Update Web Reference".

Also, if you notice in the generated class for C#, the literals in the
constructor are actually being applied to "this.Url" which is the same
publicly accessible property I was suggesting you set. Setting that Url
property immediately after instantiating the object is pretty standard, I
think. It's how I've always done it, and it's never given me any problems.
"Andy" <ar******@hotmail.com> wrote in message
news:Oo**************@TK2MSFTNGP14.phx.gbl...

You can either set the type to dynamic in the web reference in VS.Net, or

I will try that and see what the generated code looks like.

you can use the publicly accessible "Url" property on the generated class

to

Hmmm. Does that really work?
I thought about that but when I saw all of the string literals 'baked in'
to
the proxy code I thought it would be unlikely to work.

Andy

"Nathan Craddock" <na*************@xtoenergy.com> wrote in message
news:OL**************@TK2MSFTNGP15.phx.gbl...

You can either set the type to dynamic in the web reference in VS.Net, or
you can use the publicly accessible "Url" property on the generated class

to

change the url at runtime prior to executing web methods on it.

I.E:

MyClientClass o = new MyClientClass();
o.Url = "http://MyServer/MyWebService.asmx";
o.MyWebMethod();

"Andy" <ar******@hotmail.com> wrote in message
news:eC**************@TK2MSFTNGP12.phx.gbl...

> If I use Visual Studio.Net 2003 to generate "web references" for
> clients
> using either sproxy.exe (for C++) client or wsdl.exe (for C#) clients, the > web service endpoint gets "baked" into the generated code, making it
> difficult, if not impossible, to change the server that the client
> connects
> to at runtime.
>
> e.g. sproxy.exe generated code that looks like this ...
>
> static const _soapmap __CCluProvider_GetCertificate_atlsoapheader_map =
> {
> 0xF0E178D2,
> "GetCertificate",
> L"GetCertificateResponse",
> sizeof("GetCertificate")-1,
> sizeof("GetCertificateResponse")-1,
> SOAPMAP_HEADER,
> __CCluProvider_GetCertificate_atlsoapheader_entrie s,
> 0,
> 0,
> -1,
> SOAPFLAG_NONE | SOAPFLAG_PID | SOAPFLAG_DOCUMENT | SOAPFLAG_LITERAL,
> 0x2C42131A,
> "http://localhost/CluServer/",
> L"http://localhost/CluServer/",
> sizeof("http://localhost/CluServer/")-1
> };
>
> and wsdl.exe generate code like this ...
>
> /// <remarks/>
> [System.Diagnostics.DebuggerStepThroughAttribute()]
> [System.ComponentModel.DesignerCategoryAttribute("c ode")]
> [System.Web.Services.WebServiceBindingAttribute(Nam e="CluProviderSoap", > Namespace="http://localhost/CluServer/")]
> public class CluProvider :
> System.Web.Services.Protocols.SoapHttpClientProtoc ol {
>
> /// <remarks/>
> public CluProvider() {
> this.Url = "http://localhost/CluServer/CluProvider.asmx";
> }
>
> /// <remarks/>
>
> [System.Web.Services.Protocols.SoapDocumentMethodAt tribute("http://localhost > /CluServer/CanConnect", RequestNamespace="http://localhost/CluServer/",
> ResponseNamespace="http://localhost/CluServer/",
> Use=System.Web.Services.Description.SoapBindingUse .Literal,
> ParameterStyle=System.Web.Services.Protocols.SoapP arameterStyle.Wrapped)] > public bool CanConnect() {
> object[] results = this.Invoke("CanConnect", new object[0]);
> return ((bool)(results[0]));
> }
>
>
> Is there an elegent, idiomatic technique for changing the server endpoint > at
> runtime with these "generated" proxies or is it necessary to 'hand craft' > your own proxy code if you want to change the server at runtime?
>
> Changing the server endpoint at runtime seems like a reasonable thing
> to
> want to do, or have I missed something?
>
> Andy
>
>
>