internal void InitializeRequestVersionHeaders(Version maxProtocolVersion)
{
Version maxRequestVersionAllowed = GetMaxRequestVersionAllowed(maxProtocolVersion);
this.requestVersionString = this.host.RequestVersion;
this.requestMinVersion = this.GetMinDataServiceVersion(maxRequestVersionAllowed);
this.requestVersion = ValidateVersionHeader("DataServiceVersion", this.requestVersionString);
this.requestMaxVersion = ValidateVersionHeader("MaxDataServiceVersion", this.host.RequestMaxVersion);
if (this.requestVersion == null)
{
if (this.requestMaxVersion != null)
{
if ((this.requestMaxVersion >= RequestDescription.Version2Dot0) && (maxProtocolVersion >= RequestDescription.Version2Dot0))
{
this.requestVersion = (this.requestMaxVersion < maxProtocolVersion) ? this.requestMaxVersion : maxProtocolVersion;
}
else
{
this.requestVersion = (maxProtocolVersion < RequestDescription.Version2Dot0) ? maxProtocolVersion : RequestDescription.Version2Dot0;
}
}
else
{
this.requestVersion = maxProtocolVersion;
}
this.requestVersionString = this.requestVersion.ToString(2);
}
else
{
if (this.requestVersion > maxRequestVersionAllowed)
{
throw DataServiceException.CreateBadRequestError(Strings.DataService_RequestVersionMustBeLessThanMPV(this.requestVersion, maxProtocolVersion));
}
if (!RequestDescription.IsKnownRequestVersion(this.requestVersion))
{
throw DataServiceException.CreateBadRequestError(Strings.DataService_InvalidRequestVersion(this.requestVersion.ToString(2), KnownDataServiceVersionsToString(maxRequestVersionAllowed)));
}
}
if (this.requestMaxVersion == null)
{
this.requestMaxVersion = maxProtocolVersion;
}
else if (this.requestMaxVersion < RequestDescription.DataServiceDefaultResponseVersion)
{
throw DataServiceException.CreateBadRequestError(Strings.DataService_MaxDSVTooLow(this.requestMaxVersion.ToString(2), RequestDescription.DataServiceDefaultResponseVersion.Major, RequestDescription.DataServiceDefaultResponseVersion.Minor));
}
if (this.requestMaxVersion < this.requestMinVersion)
{
throw DataServiceException.CreateBadRequestError(Strings.DataService_MaxDSVLowerThanMinDSV(this.requestMaxVersion.ToString(2), this.requestMinVersion.ToString(2)));
}
}
internal static bool TryGetMinResponseVersionForError(DataServiceHostWrapper host, Version maxProtocolVersion, out Version responseVersion)
{
responseVersion = null;
try
{
Version version;
if (((maxProtocolVersion > RequestDescription.Version2Dot0) && (host.RequestMaxVersion > RequestDescription.Version2Dot0)) && WebUtil.ResponseMediaTypeWouldBeJsonLight(host.RequestAccept, false))
{
responseVersion = RequestDescription.Version3Dot0;
}
if (!host.TryGetMinDataServiceVersionFromWrappedHost(out version))
{
return(responseVersion != null);
}
if ((responseVersion == null) || (version > responseVersion))
{
responseVersion = version;
}
if (maxProtocolVersion < RequestDescription.Version3Dot0)
{
responseVersion = RequestDescription.DataServiceDefaultResponseVersion;
return(true);
}
if (!RequestDescription.IsKnownRequestVersion(responseVersion) || (responseVersion > maxProtocolVersion))
{
return(false);
}
return(true);
}
catch (Exception exception)
{
if (!CommonUtil.IsCatchableExceptionType(exception))
{
throw;
}
}
return(false);
}
private Version GetMinDataServiceVersion(Version maxProtocolVersion)
{
if (this.requestMinVersion == null)
{
this.TryGetMinDataServiceVersionFromWrappedHost(out this.requestMinVersion);
if ((maxProtocolVersion < RequestDescription.Version3Dot0) || (this.requestMinVersion == null))
{
this.requestMinVersion = RequestDescription.DataServiceDefaultResponseVersion;
}
else
{
if (this.requestMinVersion > maxProtocolVersion)
{
throw DataServiceException.CreateBadRequestError(Strings.DataService_MinDSVGreaterThanMPV(this.requestMinVersion.ToString(2), maxProtocolVersion.ToString(2)));
}
if (!RequestDescription.IsKnownRequestVersion(this.requestMinVersion))
{
throw DataServiceException.CreateBadRequestError(Strings.DataService_InvalidMinDSV(this.requestMinVersion.ToString(2), KnownDataServiceVersionsToString(GetMaxRequestVersionAllowed(maxProtocolVersion))));
}
}
}
return(this.requestMinVersion);
}