private Response ProcessAsNegotiator(object routeResult, NancyContext context)
{
context.WriteTraceLog(sb => sb.AppendLine("[DefaultRouteInvoker] Processing as negotiation"));
var negotiator =
GetNegotiator(routeResult, context);
context.WriteTraceLog(sb =>
{
var allowableFormats = negotiator.NegotiationContext
.PermissableMediaRanges
.Select(mr => mr.ToString())
.Aggregate((t1, t2) => t1 + ", " + t2);
var acceptFormants = context.Request.Headers["accept"]
.Aggregate((t1, t2) => t1 + ", " + t2);
sb.AppendFormat("[DefaultRouteInvoker] Accept header: {0}\n", acceptFormants);
sb.AppendFormat("[DefaultRouteInvoker] Acceptable media ranges: {0}\n", allowableFormats);
});
var compatibleHeaders =
this.GetCompatibleHeaders(context, negotiator);
if (!compatibleHeaders.Any())
{
context.WriteTraceLog(sb => sb.AppendLine("[DefaultRouteInvoker] Unable to negotiate response - no headers compatible"));
return new NotAcceptableResponse();
}
var response =
NegotiateResponse(compatibleHeaders, routeResult, negotiator, context);
if (response == null)
{
context.WriteTraceLog(sb => sb.AppendLine("[DefaultRouteInvoker] Unable to negotiate response - no processors returned valid response"));
response = new NotAcceptableResponse();
}
if (compatibleHeaders.Count() > 1)
{
response.WithHeader("Vary", "Accept");
}
AddLinkHeaders(context, compatibleHeaders, response);
if (!(response is NotAcceptableResponse))
{
AddNegotiatedHeaders(negotiator, response);
}
return response;
}
private Response ProcessAsNegotiator(object routeResult, NancyContext context)
{
context.WriteTraceLog(sb => sb.AppendLine("[DefaultRouteInvoker] Processing as negotiation"));
var negotiator =
GetNegotiator(routeResult, context);
var coercedAcceptHeaders = this.GetCoercedAcceptHeaders(context).ToArray();
context.WriteTraceLog(sb =>
{
var allowableFormats = negotiator.NegotiationContext
.PermissableMediaRanges
.Select(mr => mr.ToString())
.Aggregate((t1, t2) => t1 + ", " + t2);
var originalAccept = context.Request.Headers["accept"].Any()
? string.Join(", ", context.Request.Headers["accept"])
: "None";
var coercedAccept = coercedAcceptHeaders.Any() ?
coercedAcceptHeaders.Select(h => h.Item1).Aggregate((t1, t2) => t1 + ", " + t2) :
"None";
sb.AppendFormat("[DefaultRouteInvoker] Original accept header: {0}\n", originalAccept);
sb.AppendFormat("[DefaultRouteInvoker] Coerced accept header: {0}\n", coercedAccept);
sb.AppendFormat("[DefaultRouteInvoker] Acceptable media ranges: {0}\n", allowableFormats);
});
var compatibleHeaders = this.GetCompatibleHeaders(coercedAcceptHeaders, context, negotiator);
if (!compatibleHeaders.Any())
{
context.WriteTraceLog(sb => sb.AppendLine("[DefaultRouteInvoker] Unable to negotiate response - no headers compatible"));
return new NotAcceptableResponse();
}
var response =
NegotiateResponse(compatibleHeaders, routeResult, negotiator, context);
if (response == null)
{
context.WriteTraceLog(sb => sb.AppendLine("[DefaultRouteInvoker] Unable to negotiate response - no processors returned valid response"));
response = new NotAcceptableResponse();
}
response.WithHeader("Vary", "Accept");
AddLinkHeaders(context, compatibleHeaders, response);
if (!(response is NotAcceptableResponse))
{
AddNegotiatedHeaders(negotiator, response);
}
if (negotiator.NegotiationContext.StatusCode.HasValue)
{
response.StatusCode = negotiator.NegotiationContext.StatusCode.Value;
}
foreach (var cookie in negotiator.NegotiationContext.Cookies)
{
response.Cookies.Add(cookie);
}
return response;
}
