Index: src/ch/UpdateHeaders.cpp
===================================================================
diff -u -r50ad2dc9f0b42ba432bb54e4a042582277410773 -r50007f112b77cba170e6c427fee5428bda2d9dc5
--- src/ch/UpdateHeaders.cpp	(.../UpdateHeaders.cpp)	(revision 50ad2dc9f0b42ba432bb54e4a042582277410773)
+++ src/ch/UpdateHeaders.cpp	(.../UpdateHeaders.cpp)	(revision 50007f112b77cba170e6c427fee5428bda2d9dc5)
@@ -36,12 +36,13 @@
 		boost::lexical_cast<std::wstring>(PRODUCT_VERSION3) + L"." +
 		boost::lexical_cast<std::wstring>(PRODUCT_VERSION4) + L")";
 
-	wstrUserAgent += L" (" + m_tWindowsVersion.GetWindowsVersion() + L")";
+	wstrUserAgent += L"; " + m_tWindowsVersion.GetWindowsVersion();
+	wstrUserAgent += L"; " + m_tWindowsVersion.GetCpuArch();
 
 	return wstrUserAgent;
 }
 
-std::wstring UpdateHeaders::GetHeaders(const std::wstring& wstrLanguagePath)
+std::wstring UpdateHeaders::GetHeaders(const std::wstring& wstrLanguagePath, UpdateVersionInfo::EVersionType eUpdateChannel)
 {
 	std::wstring wstrLanguage;
 	size_t stPos = wstrLanguagePath.rfind(L'\\');
@@ -71,10 +72,31 @@
 	wstrHeaders += L"CopyHandler-Language: " + wstrLanguage + L"\r\n";
 
 	// #todo update channel
-	wstrHeaders += L"CopyHandler-UpdateChannel: beta\r\n";
+	wstrHeaders += L"CopyHandler-UpdateChannel: " + GetUpdateChannel(eUpdateChannel) + L"\r\n";
 
 	// finalize
 	wstrHeaders += L"\r\n\r\n";
 
 	return wstrHeaders;
 }
+
+std::wstring UpdateHeaders::GetUpdateChannel(UpdateVersionInfo::EVersionType eUpdateChannel)
+{
+	switch(eUpdateChannel)
+	{
+	case UpdateVersionInfo::eAlpha:
+		return L"alpha";
+
+	case UpdateVersionInfo::eBeta:
+		return L"beta";
+
+	case UpdateVersionInfo::eReleaseCandidate:
+		return L"rc";
+
+	case UpdateVersionInfo::eStable:
+		return L"stable";
+
+	default:
+		return L"unknown";
+	}
+}