public static AppDelegate Middleware(AppDelegate app)
{
return (call, callback) =>
{
Action<Exception, Action<ArraySegment<byte>>> showErrorMessage =
(ex, write) =>
ErrorPage(call, ex, text =>
{
var data = Encoding.ASCII.GetBytes(text);
write(new ArraySegment<byte>(data));
});
Action<Exception> showErrorPage = ex =>
{
var response = new Response(callback) { Status = "500 Internal Server Error", ContentType = "text/html" };
response.Start(() =>
{
showErrorMessage(ex, data => response.Write(data));
response.End();
});
};
try
{
app(call, (result, error) =>
{
if (error != null)
{
showErrorPage(error);
}
else
{
var body = result.Body;
result.Body = (write, end, cancel) =>
{
showErrorPage = ex =>
{
if (ex != null)
{
showErrorMessage(ex, data => write(data, null));
}
end(null);
};
body.Invoke(write, showErrorPage, cancel);
};
callback(result, null);
}
});
}
catch (Exception exception)
{
showErrorPage(exception);
}
};
}
public static AppDelegate Middleware(AppDelegate app)
{
return (env, result, fault) =>
{
Action<Exception, Action<ArraySegment<byte>>> showErrorMessage =
(ex, write) =>
ErrorPage(env, ex, text =>
{
var data = Encoding.ASCII.GetBytes(text);
write(new ArraySegment<byte>(data));
});
Action<Exception> showErrorPage = ex =>
{
var response = new Response(result) { Status = "500 Internal Server Error", ContentType = "text/html" };
response.Start(() =>
{
showErrorMessage(ex, data => response.Write(data));
response.End();
});
};
try
{
app(
env,
(status, headers, body) =>
result(
status,
headers,
(write, flush, end, token) =>
{
showErrorPage = ex =>
{
if (ex != null)
{
showErrorMessage(ex, data => write(data));
}
end(null);
};
body(
write,
flush,
showErrorPage,
token);
}),
ex => showErrorPage(ex));
}
catch (Exception exception)
{
showErrorPage(exception);
}
};
}
public static AppDelegate ShowEnvironment()
{
return (env, result, fault) =>
{
var response = new Response(result)
{
Status = "200 OK",
ContentType = "text/xml"
};
response.Start(() =>
{
var detail = env.Select(kv => new XElement(kv.Key, kv.Value));
var xml = new XElement("xml", detail.OfType<object>().ToArray());
response.End(xml.ToString());
});
};
}
public static AppDelegate AsyncApp()
{
return call =>
{
var request = new Request(call);
var response = new Response
{
ContentType = "text/html",
};
var wilson = "left - right\r\n123456789012\r\nhello world!\r\n";
response.StartAsync()
.Then(()=>
{
Delay
});
return response.GetResultAsync();
ThreadPool.QueueUserWorkItem(_ =>
{
try
{
var href = "?flip=left";
if (request.Query["flip"] == "left")
{
wilson = wilson.Split(new[] { System.Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries)
.Select(line => new string(line.Reverse().ToArray()))
.Aggregate("", (agg, line) => agg + line + System.Environment.NewLine);
href = "?flip=right";
}
response.Start(() => TimerLoop(350, response.Error,
() => response.Write("<title>Hutchtastic</title>"),
() => response.Write("<pre>"),
() => response.Write(wilson),
() => response.Write("</pre>"),
() =>
{
if (request.Query["flip"] == "crash")
{
throw new ApplicationException("Wilson crashed!");
}
},
() => response.Write("<p><a href='" + href + "'>flip!</a></p>"),
() => response.Write("<p><a href='?flip=crash'>crash!</a></p>"),
response.End));
}
catch (Exception ex)
{
callback(default(ResultParameters), ex);
}
});
};
}
public void Sync_Exception_in_response_body_stream_should_be_formatted_as_it_passes_through()
{
var stack = Build(b => b
.UseShowExceptions()
.UseFunc<AppDelegate>(_ => appCall =>
{
ResultParameters rawResult = new ResultParameters();
rawResult.Body = stream =>
{
byte[] bodyBytes = Encoding.ASCII.GetBytes("<p>so far so good</p>");
stream.Write(bodyBytes, 0, bodyBytes.Length);
throw new ApplicationException("failed sending body sync");
};
rawResult.Status = 200;
Response appResult = new Response(rawResult);
appResult.Headers.SetHeader("Content-Type", "text/html");
appResult.Start();
return appResult.ResultTask;
}));
ResultParameters result = stack(new Request().Call).Result;
Assert.That(result.Status, Is.EqualTo(200));
Assert.That(result.Headers.GetHeader("Content-Type"), Is.EqualTo("text/html"));
String bodyText = ReadBody(result.Body);
Assert.That(bodyText, Is.StringContaining("<p>so far so good</p>"));
Assert.That(bodyText, Is.StringContaining("failed sending body sync"));
}