public static HandlerDispatcher.HandlerDelegate Handler(string basePath, string contentType, string fileExt)
{
return delegate(IHttpRequestContext request, UriTemplateMatch uriMatch)
{
var requestPath = uriMatch.BoundVariables["path"];
var path = Path.Combine(basePath, requestPath) + fileExt;
if (path.StartsWith(basePath) == false)
{
var r = new ContentResponse(400, "No File", "");
return Task.FromResult<IHttpResponseAction>(r);
}
try
{
var file = File.OpenRead(path);
var r = new FileContentResponse(200, "Description", contentType, file);
return Task.FromResult<IHttpResponseAction>(r);
}
catch (Exception)
{
var r = new ContentResponse(400, "No File", "");
return Task.FromResult<IHttpResponseAction>(r);
}
};
}
public async Task<IHttpResponseAction> Execute(IHttpRequestContext state)
{
var baseUri = new Uri(state.Request.Url.Scheme + "://" + state.Request.Url.Authority);
// Find a handler matched by URI
HandlerDelegate handler = null;
UriTemplateMatch uriMatch = null;
foreach (var i in _uriHandlers)
{
var match = i.UriTemplate.Match(baseUri, state.Request.Url);
if (match != null)
{
handler = i.Handler;
uriMatch = match;
break;
}
}
if (handler == null)
{
var r = new ContentResponse(400, "Cannot find handler", "");
return r;
}
// Handle request
try
{
var r = await handler(state, uriMatch);
return r;
}
catch (Exception e)
{
var r = new ContentResponse(500, "", "Error!\n" + e);
return r;
}
}