Console Application to discover Effective Named Pipe Path of a WCF net.pipe Endpoint

As I have promised in my previous post, I am making available a C++ console application to troubleshoot named pipes endpoints in WCF. Below is a screenshot of the application:

Application logic:

• It gets the endpoint from the command line and substitute the host name by +, * depending on the wildcard mode.
• It then add a “/” to the end if not present already and transform to up case all characters of pipe and path
• If the size of the resulting string is bigger than 128 characters a hash is applied to the resulting string  (not implemented)
• The final name is net.pipe:E + Base64 of string generated in item 2 or net.pipe:H + Base64 of string generated in item 3 if uri is bigger than 128 characters

 Post detailing the problem:

http://blogs.msdn.com/b/rodneyviana/archive/2011/03/22/named-pipes-in-wcf-are-named-but-not-by-you-and-how-to-find-the-actual-windows-object-name.aspx

 

Source Code is as shown below (subject to this license: http://rodneyviana.codeplex.com/license).

// ReadMemory.cpp : Defines the entry point for the console application. 

//

#include "stdafx.h"

void NormalizeEndPoint(const std::wstring &source, std::wstring& normal) 

{ 

    normal.assign(source);

    if(!normal.compare(0, 10, L"net.pipe://")) 

    { 

        normal.clear(); 

        return; 

    }

    int hoststart = normal.find_first_of(L"//"); 

    int hostend = normal.find(L"/", hoststart+2);

    std::wstring ending(normal.substr(hostend)); 

    std::wstring starting(normal.substr(0, hoststart).append(L"//+")); 

    std::transform(ending.begin(), ending.end(), ending.begin(), (int(*)(int))std::toupper); 

    std::wstring normalized(starting.append(ending)); 

    if(normalized.substr(normalized.length()-1).compare(L"/")) 

    { 

        normalized.append(L"/"); 

    } 

    

    normal.assign(normalized); 

    return;

}

void ShowSyntax(bool SyntaxError) 

{ 

    std::wprintf(L"ReadMemory version 1.0\n"); 

    std::wprintf(L"Written by Rodney Viana - http://blogs.msdn.com/rodneyviana\n"); 

    std::wprintf(L"\n"); 

    if(SyntaxError) 

        std::wprintf(L"Syntax Error\n\n");

    std::wprintf(L"Syntax:\n"); 

    std::wprintf(L"ReadMemory <PipeNameEndPoint> | -file <MappedMemoryFile>\n"); 

    std::wprintf(L"Where:\t<PipeNameEndPoint> is a endpoint for a net.pipe in WCF in\n\t the format net.pipe://host/path\n"); 

    std::wprintf(L"\t<MappedMemoryFile> is a memory mapped file\n"); 

    std::wprintf(L"\n"); 

    std::wprintf(L"Examples\n"); 

    std::wprintf(L"\tReadMemory net.pipe://localhost/Service/Service1\n"); 

Read more: Rodney Viana's (MSFT) Blog

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