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Help! ... Outbound Port Getting Shut Down

TC
Hey All,

I have some classes that I recently built for a website which uses the
HttpWebRequest & HttpWebResponse objects from the System.Net namespace.
Basically, the classes rap submitted data up, connect to external websites
on external servers and post / remove the data from these other sites.

It works fine locally but when uploaded to the BCentral production server,
the outgoing requests get shutdown.

Apparently, for the System.Net name space, you cannot specify the port. The
outgoing port will be dynamic random. It will be the client port and not the
service port. The port range can be 1024 and above. It is by design and
there is no way you can specify the client port.

Now, as for BCentral, they do allow outbound connections but only on the
"default" ports such at 80 for http, etc. Every other non-essential port
is locked down and they don't open up other ports because of security
concerns.

Can someone please advise?

Thanks,

TC
Jun 8 '07 #1
3 1938
HttpWebRequest will use any port (specify in url) you want but defaults
to port 80. not sure what your issue is. maybe some sample code.

-- bruce (sqlwork.com)

TC wrote:
Hey All,

I have some classes that I recently built for a website which uses the
HttpWebRequest & HttpWebResponse objects from the System.Net namespace.
Basically, the classes rap submitted data up, connect to external websites
on external servers and post / remove the data from these other sites.

It works fine locally but when uploaded to the BCentral production server,
the outgoing requests get shutdown.

Apparently, for the System.Net name space, you cannot specify the port. The
outgoing port will be dynamic random. It will be the client port and not the
service port. The port range can be 1024 and above. It is by design and
there is no way you can specify the client port.

Now, as for BCentral, they do allow outbound connections but only on the
"default" ports such at 80 for http, etc. Every other non-essential port
is locked down and they don't open up other ports because of security
concerns.

Can someone please advise?

Thanks,

TC

Jun 8 '07 #2
TC
Hey Bruce,

Thanks for the response.

Do you want me to post it inline or as an attachment in .zip file?

Would you prefer that I send the source to you personally?

I should also add that the code is for VS 2003

Thanks,

Todd
"bruce barker" <no****@nospam. comwrote in message
news:Oj******** *****@TK2MSFTNG P06.phx.gbl...
HttpWebRequest will use any port (specify in url) you want but defaults to
port 80. not sure what your issue is. maybe some sample code.

-- bruce (sqlwork.com)

TC wrote:
>Hey All,

I have some classes that I recently built for a website which uses the
HttpWebReque st & HttpWebResponse objects from the System.Net namespace.
Basically, the classes rap submitted data up, connect to external
websites on external servers and post / remove the data from these other
sites.

It works fine locally but when uploaded to the BCentral production
server, the outgoing requests get shutdown.

Apparently, for the System.Net name space, you cannot specify the port.
The outgoing port will be dynamic random. It will be the client port and
not the service port. The port range can be 1024 and above. It is by
design and there is no way you can specify the client port.

Now, as for BCentral, they do allow outbound connections but only on the
"default" ports such at 80 for http, etc. Every other non-essential
port is locked down and they don't open up other ports because of
security concerns.

Can someone please advise?

Thanks,

TC

Jun 8 '07 #3
TC
Hey Bruce,

I'm going to post some material inline herein. Let's just assume that all
constant strings, values, viewstate, etc. work.

I think if I paste in the material with the actual calls, it might mean
something to you.

Thanks,

TC

/// <summary>
/// Builds a WebRequest object based upon the parameters passed in
/// </summary>
/// <param name="uriURL">S ee documentation for HttpWebRequest
parameters</param>
/// <param name="cookieJar ">See documentation for HttpWebRequest
parameters</param>
/// <param name="userAgent ">See documentation for HttpWebRequest
parameters</param>
/// <param name="requestMe thod">See documentation for HttpWebRequest
parameters</param>
/// <param name="timeOut"> See documentation for HttpWebRequest
parameters</param>
/// <param name="contentTy pe">See documentation for HttpWebRequest
parameters</param>
/// <param name="keepAlive ">See documentation for HttpWebRequest
parameters</param>
/// <param name="allowAuto Redirect">See documentation for HttpWebRequest
parameters</param>
/// <returns></returns>
public static HttpWebRequest BuildHTTPWebReq uest(string uriURL,
CookieContainer cookieJar, string userAgent,
string requestMethod, int timeOut,
string contentType, bool keepAlive,
bool allowAutoRedire ct)
{
Uri UriRequest;
HttpWebRequest HttpWRequest;

UriRequest = new Uri(uriURL);
HttpWRequest = (HttpWebRequest )WebRequest.Cre ate(UriRequest) ;
HttpWRequest.Co okieContainer=c ookieJar;
// Set the name of the user agent. This is the client name that is passed
to IIS
HttpWRequest.Us erAgent = userAgent;
HttpWRequest.Ke epAlive = keepAlive;
HttpWRequest.Al lowAutoRedirect =allowAutoRedir ect;
HttpWRequest.Ti meout = timeOut;
HttpWRequest.Me thod = requestMethod;
HttpWRequest.Co ntentType = contentType;
// We don't want caching to take place so we need
// to set the pragma header to say we don't want caching
HttpWRequest.He aders.Set(WebPo st.Pragma,WebPo st.NoCache);
// The server may not understand this new header; disable it
System.Net.Serv icePointManager .Expect100Conti nue=false;

return HttpWRequest;
}

/// <summary>
/// Logs into the perfectsplitmd. com website
/// </summary>
public static void PerfectSplitLog in()
{
// Reset flag
WebPost.Perfect SplitPostCandid ateSuccess=fals e;

StringBuilder PostWhat=new StringBuilder() ;
HttpWebRequest
HttpWRequest=Bu ildHTTPWebReque st(WebPost.Perf ectSplitLoginPa ge,
WebPost.Perfect SplitCookieJar,
WebPost.Perfect SplitUserAgent,
WebPost.PostReq uest,
WebPost.TimeOut ,
WebPost.Content TypeFormEncoded ,
false,false);

PostWhat.Append (WebPost.Perfec tSplitViewState Login);
PostWhat.Append (WebPost.Perfec tSplitUsernameC ontrolTag +
WebPost.Perfect SplitMDUsername );
PostWhat.Append (WebPost.Perfec tSplitPasswordC ontrolTag +
WebPost.Perfect SplitMDPassword );
PostWhat.Append (WebPost.Perfec tSplitLoginButt onTag);

// Call a function that does the work to get the request.
if(!MakeWebRequ est(HttpWReques t, PostWhat.ToStri ng()))
{
return; // The call failed
}
WebPost.Perfect SplitLoginSucce ss=true;
}
/// <summary>
/// Posts a candidate to the perfectsplit website
/// </summary>
/// <param name="PostCandi date">
/// A valid instance of the 'PerfectSplitPo stCandidate' class
/// </param>
public static void PerfectSplitMDP ostCandidate(Pe rfectSplitPostC andidate
PostCandidate)
{
// Reset flag
WebPost.Perfect SplitPostCandid ateSuccess=fals e;

StringBuilder PostWhat=new StringBuilder() ;
HttpWebRequest
HttpWRequest=Bu ildHTTPWebReque st(WebPost.Perf ectSplitPostCan didatePage,
WebPost.Perfect SplitCookieJar,
WebPost.Perfect SplitUserAgent,
WebPost.PostReq uest,
WebPost.TimeOut ,
WebPost.Content TypeFormEncoded ,
false,false);
// The server may not understand this new header; disable it
System.Net.Serv icePointManager .Expect100Conti nue=false;

PostWhat.Append (WebPost.Perfec tSplitViewState PostCandidate);
PostWhat.Append (PostCandidate. CandidateID);
PostWhat.Append (PostCandidate. Citizenship);
PostWhat.Append (PostCandidate. FirstSpecialty) ;
PostWhat.Append (PostCandidate. Population);
PostWhat.Append (PostCandidate. SecondSpecialty );
PostWhat.Append (PostCandidate. YearMDEarned);
PostWhat.Append (PostCandidate. Degree);
PostWhat.Append (PostCandidate. BoardStatus);
PostWhat.Append (PostCandidate. Training);
PostWhat.Append (PostCandidate. WhenAvailable);

if(PostCandidat e.PracticeA0.In dexOf(PerfectSp litPostCandidat e.PracticeOn)>0 )
{
PostWhat.Append (PostCandidate. PracticeA0);
}
if(PostCandidat e.PracticeA1.In dexOf(PerfectSp litPostCandidat e.PracticeOn)>0 )
{
PostWhat.Append (PostCandidate. PracticeA1);
}
if(PostCandidat e.PracticeA2.In dexOf(PerfectSp litPostCandidat e.PracticeOn)>0 )
{
PostWhat.Append (PostCandidate. PracticeA2);
}
if(PostCandidat e.PracticeA3.In dexOf(PerfectSp litPostCandidat e.PracticeOn)>0 )
{
PostWhat.Append (PostCandidate. PracticeA3);
}

PostWhat.Append (PostCandidate. StatesList);
PostWhat.Append (PerfectSplitPo stCandidate.Pos tCandidateButto nTag);
PostWhat.Append (PostCandidate. Comments);
//Call a function that does the work to get the request.
if (!MakeWebReques t(HttpWRequest, PostWhat.ToStri ng()))
{
return; // the call failed
}
WebPost.Perfect SplitPostCandid ateSuccess=true ;
}
/// <summary>
/// Posts an opening to the perfectsplit website
/// </summary>
/// <param name="PostOpeni ng">
/// A valid instance of the 'PerfectSplitPo stOpening' class
/// </param>
public static void PerfectSplitMDP ostOpening(Perf ectSplitPostOpe ning
PostOpening)
{
// Reset flag
WebPost.Perfect SplitPostOpenin gSuccess=false;

StringBuilder PostWhat=new StringBuilder() ;
HttpWebRequest
HttpWRequest=Bu ildHTTPWebReque st(WebPost.Perf ectSplitPostOpe ningPage,
WebPost.Perfect SplitCookieJar,
WebPost.Perfect SplitUserAgent,
WebPost.PostReq uest,
WebPost.TimeOut ,
WebPost.Content TypeFormEncoded ,
false,false);
// The server may not understand this new header; disable it
System.Net.Serv icePointManager .Expect100Conti nue=false;

PostWhat.Append (WebPost.Perfec tSplitViewState PostOpening);
PostWhat.Append (PostOpening.Po sitionID);
PostWhat.Append (PostOpening.Ci tizenship);
PostWhat.Append (PostOpening.Fi rstSpecialty);
PostWhat.Append (PostOpening.Po pulation);
PostWhat.Append (PostOpening.Se condSpecialty);
PostWhat.Append (PostOpening.St ate);
PostWhat.Append (PostOpening.De gree);
PostWhat.Append (PostOpening.Bo ardStatus);
PostWhat.Append (PostOpening.Tr aining);
PostWhat.Append (PostOpening.Fe e);

if(PostOpening. PracticeA0.Inde xOf(PerfectSpli tPostOpening.Pr acticeOn)>0)
{
PostWhat.Append (PostOpening.Pr acticeA0);
}
if(PostOpening. PracticeA1.Inde xOf(PerfectSpli tPostOpening.Pr acticeOn)>0)
{
PostWhat.Append (PostOpening.Pr acticeA1);
}
if(PostOpening. PracticeA2.Inde xOf(PerfectSpli tPostOpening.Pr acticeOn)>0)
{
PostWhat.Append (PostOpening.Pr acticeA2);
}
if(PostOpening. PracticeA3.Inde xOf(PerfectSpli tPostOpening.Pr acticeOn)>0)
{
PostWhat.Append (PostOpening.Pr acticeA3);
}

PostWhat.Append (PostOpening.Co mments);
PostWhat.Append (PerfectSplitPo stOpening.PostP ositionButtonTa g);
//Call a function that does the work to get the request.
if (!MakeWebReques t(HttpWRequest, PostWhat.ToStri ng()))
{
return; // the call failed
}
WebPost.Perfect SplitPostOpenin gSuccess=true;
}
/// <summary>
/// Removes a candidate from the perfectsplit website
/// </summary>
/// <param name="RemoveCan didate">
/// A valid instance of the 'PerfectSplitRe moveCandidate' class
/// </param>
public static void
PerfectSplitMDR emoveCandidate( PerfectSplitRem oveCandidate RemoveCandidate )
{
WebPost.Perfect SplitRemoveCand idateSuccess=fa lse;

int
Count=WebPost.O ccurrences(WebP ost.ResponseDat a,RemoveCandida te.CandidateID) ;

if(Count>0)
{
for(int Loop=1;Loop<=Co unt;Loop++)
{
int Start=WebPost.R esponseData.Ind exOf(RemoveCand idate.Candidate ID,1);
Start=WebPost.R esponseData.Ind exOf(PerfectSpl itRemoveCandida te.DeleteContro lInID,Start);
Start=WebPost.R esponseData.Ind exOf(PerfectSpl itRemoveCandida te.DeleteContro lName,Start
+ RemoveCandidate .CandidateID.Le ngth);
int
End=WebPost.Res ponseData.Index Of(PerfectSplit RemoveCandidate .DeleteControlN ameEnd,Start)+( PerfectSplitRem oveCandidate.De leteControlName End.Length-2);

RemoveCandidate .ControlFullNam e=WebPost.Respo nseData.Substri ng(Start,End-Start);
RemoveCandidate .ControlFullNam e=RemoveCandida te.ControlFullN ame.Replace(Glo bals.SymbolCons tants.Dollar,We bPost.EncodedDe leteControlDoll ar);

StringBuilder PostWhat=new StringBuilder() ;
HttpWebRequest
HttpWRequest=Bu ildHTTPWebReque st(WebPost.Perf ectSplitMyCandi datesPage,
WebPost.Perfect SplitCookieJar,
WebPost.Perfect SplitUserAgent,
WebPost.PostReq uest,
WebPost.TimeOut ,
WebPost.Content TypeFormEncoded ,
false,false);

// The server may not understand this new header; disable it
System.Net.Serv icePointManager .Expect100Conti nue=false;

PostWhat.Append (WebPost.EventT arget);
PostWhat.Append (RemoveCandidat e.ControlFullNa me);
PostWhat.Append (Globals.Symbol Constants.Amper sand);
PostWhat.Append (WebPost.EventA rgument);
PostWhat.Append (Globals.Symbol Constants.Amper sand);
PostWhat.Append (WebPost.Perfec tSplitViewState MyCandidates);

//Call a function that does the work to get the request.
if (!MakeWebReques t(HttpWRequest, PostWhat.ToStri ng()))
{
return; // the call failed
}
WebPost.Perfect SplitRemoveCand idateSuccess=tr ue;

// Get ViewState for MyCandidates page
// Repeating this here also updates the 'ResponseData' property
// which is needed for this loop
WebPost.Perfect SplitViewStateM yCandidates =
WebPost.GetView State(WebPost.P erfectSplitMyCa ndidatesPage,
WebPost.Perfect SplitCookieJar,
WebPost.Perfect SplitUserAgent) ;
}
}
}

/// <summary>
/// Removes an opening from the perfectsplit website
/// </summary>
/// <param name="RemoveOpe ning">
/// A valid instance of the 'PerfectSplitRe moveOpening' class
/// </param>
public static void PerfectSplitMDR emoveOpening(Pe rfectSplitRemov eOpening
RemoveOpening)
{
WebPost.Perfect SplitRemoveOpen ingSuccess=fals e;

int
Count=WebPost.O ccurrences(WebP ost.ResponseDat a,RemoveOpening .OpeningID);

if(Count>0)
{
for(int Loop=1;Loop<=Co unt;Loop++)
{
int Start=WebPost.R esponseData.Ind exOf(RemoveOpen ing.OpeningID,1 );
Start=WebPost.R esponseData.Ind exOf(PerfectSpl itRemoveOpening .DeleteControlI nID,Start);
Start=WebPost.R esponseData.Ind exOf(PerfectSpl itRemoveOpening .DeleteControlN ame,Start
+ RemoveOpening.O peningID.Length );
int
End=WebPost.Res ponseData.Index Of(PerfectSplit RemoveOpening.D eleteControlNam eEnd,Start)+(Pe rfectSplitRemov eOpening.Delete ControlNameEnd. Length-2);

RemoveOpening.C ontrolFullName= WebPost.Respons eData.Substring (Start,End-Start);
RemoveOpening.C ontrolFullName= RemoveOpening.C ontrolFullName. Replace(Globals .SymbolConstant s.Dollar,WebPos t.EncodedDelete ControlDollar);

StringBuilder PostWhat=new StringBuilder() ;
HttpWebRequest
HttpWRequest=Bu ildHTTPWebReque st(WebPost.Perf ectSplitMyOpeni ngsPage,
WebPost.Perfect SplitCookieJar,
WebPost.Perfect SplitUserAgent,
WebPost.PostReq uest,
WebPost.TimeOut ,
WebPost.Content TypeFormEncoded ,
false,false);

// The server may not understand this new header; disable it
System.Net.Serv icePointManager .Expect100Conti nue=false;

PostWhat.Append (WebPost.EventT arget);
PostWhat.Append (RemoveOpening. ControlFullName );
PostWhat.Append (Globals.Symbol Constants.Amper sand);
PostWhat.Append (WebPost.EventA rgument);
PostWhat.Append (Globals.Symbol Constants.Amper sand);
PostWhat.Append (WebPost.Perfec tSplitViewState MyOpenings);

//Call a function that does the work to get the request.
if (!MakeWebReques t(HttpWRequest, PostWhat.ToStri ng()))
{
return; // the call failed
}
WebPost.Perfect SplitRemoveOpen ingSuccess=true ;

// Get ViewState for MyOpenings page
// Repeating this here also updates the 'ResponseData' property
// which is needed for this loop
WebPost.Perfect SplitViewStateM yOpenings =
WebPost.GetView State(WebPost.P erfectSplitMyOp eningsPage,
WebPost.Perfect SplitCookieJar,
WebPost.Perfect SplitUserAgent) ;
}
}
}

/// <summary>
/// Complete the HttpWebRequest
/// </summary>
/// <param name="httpWRequ est">
/// The HttpWebRequest object used to get a response from a website
/// </param>
/// <param name="postWhat" >
/// The data that is posted to the website
/// </param>
/// <returns></returns>
private static bool MakeWebRequest( HttpWebRequest httpWRequest, string
postWhat)
{
HttpWebResponse HttpWResponse;

// We need to store the data into a byte array
byte[] PostData = System.Text.Enc oding.ASCII.Get Bytes(postWhat) ;
httpWRequest.Co ntentLength = PostData.Length ;
Stream TempStream = httpWRequest.Ge tRequestStream( );
// Write the data to be posted to the Request Stream
TempStream.Writ e(PostData,0,Po stData.Length);
TempStream.Clos e();

// Make the connection to the server
HttpWResponse = (HttpWebRespons e)httpWRequest. GetResponse();

// Reset the response object
if(HttpWRespons e != null)
{
StreamReader ResponseReader = new
StreamReader(Ht tpWResponse.Get ResponseStream( ));
// Log response data for use in other capacities (i.e. examine contents)
WebPost.Respons eData = ResponseReader. ReadToEnd().ToS tring();
HttpWResponse.C lose();
HttpWResponse = null;
}
return true;
}


"bruce barker" <no****@nospam. comwrote in message
news:Oj******** *****@TK2MSFTNG P06.phx.gbl...
HttpWebRequest will use any port (specify in url) you want but defaults to
port 80. not sure what your issue is. maybe some sample code.

-- bruce (sqlwork.com)

TC wrote:
>Hey All,

I have some classes that I recently built for a website which uses the
HttpWebReque st & HttpWebResponse objects from the System.Net namespace.
Basically, the classes rap submitted data up, connect to external
websites on external servers and post / remove the data from these other
sites.

It works fine locally but when uploaded to the BCentral production
server, the outgoing requests get shutdown.

Apparently, for the System.Net name space, you cannot specify the port.
The outgoing port will be dynamic random. It will be the client port and
not the service port. The port range can be 1024 and above. It is by
design and there is no way you can specify the client port.

Now, as for BCentral, they do allow outbound connections but only on the
"default" ports such at 80 for http, etc. Every other non-essential
port is locked down and they don't open up other ports because of
security concerns.

Can someone please advise?

Thanks,

TC

Jun 8 '07 #4

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