public void Can_clone_xdoc_message()
{
var m = new DreamMessage(DreamStatus.Ok, new DreamHeaders().Add("foo", "bar"), new XDoc("doc"));
m.Headers.Add("baz", "blah");
var m2 = m.Clone();
Assert.AreEqual(m.ToDocument().ToCompactString(), m2.ToDocument().ToCompactString());
Assert.AreEqual(m.Headers["foo"], m2.Headers["foo"]);
Assert.AreEqual(m.Headers["baz"], m2.Headers["baz"]);
}
public void Can_clone_no_content_message()
{
var m = new DreamMessage(DreamStatus.Ok, new DreamHeaders().Add("foo", "bar"));
m.Headers.Add("baz", "blah");
var m2 = m.Clone();
Assert.AreEqual(m.ToText(), m2.ToText());
Assert.AreEqual(m.Headers["foo"], m2.Headers["foo"]);
Assert.AreEqual(m.Headers["baz"], m2.Headers["baz"]);
}
public void Can_clone_a_null_stream_message()
{
var m = new DreamMessage(DreamStatus.Ok, new DreamHeaders().Add("foo", "bar"), MimeType.TEXT, Stream.Null.Length, Stream.Null);
m.Headers.Add("baz", "blah");
var m2 = m.Clone();
Assert.AreEqual(0, m2.ContentLength);
Assert.AreEqual(m.ContentType.ToString(), m2.ContentType.ToString());
Assert.AreEqual(m.Headers["foo"], m2.Headers["foo"]);
Assert.AreEqual(m.Headers["baz"], m2.Headers["baz"]);
}
public void Can_clone_byte_message()
{
var m = new DreamMessage(DreamStatus.Ok, new DreamHeaders().Add("foo", "bar"), MimeType.TIFF, new byte[] { 1, 2, 3, 4 });
m.Headers.Add("baz", "blah");
var m2 = m.Clone();
Assert.AreEqual(m.ToBytes(), m2.ToBytes());
Assert.AreEqual(m.ContentType.ToString(), m2.ContentType.ToString());
Assert.AreEqual(m.Headers["foo"], m2.Headers["foo"]);
Assert.AreEqual(m.Headers["baz"], m2.Headers["baz"]);
}
//--- Constructors ---
/// <summary>
/// Create a new event from a dream message.
/// </summary>
/// <param name="message">Message to parse.</param>
public DispatcherEvent(DreamMessage message)
{
// sanity check the input
string[] origins = message.Headers.DreamEventOrigin;
if (origins.Length == 0)
{
throw new DreamBadRequestException(string.Format("message must specify at least one DreamEventOrigin header"));
}
if (string.IsNullOrEmpty(message.Headers.DreamEventChannel))
{
throw new DreamBadRequestException("message must have exactly one DreamEventChannel header");
}
// parse message
_message = message.Clone();
Channel = new XUri(_message.Headers.DreamEventChannel);
if (!string.IsNullOrEmpty(_message.Headers.DreamEventResource))
{
Resource = new XUri(_message.Headers.DreamEventResource);
}
List <XUri> originList = new List <XUri>();
foreach (string origin in origins)
{
originList.Add(new XUri(origin));
}
Origins = originList.ToArray();
List <DispatcherRecipient> recipientList = new List <DispatcherRecipient>();
foreach (string recipient in _message.Headers.DreamEventRecipients)
{
recipientList.Add(new DispatcherRecipient(new XUri(recipient)));
}
Recipients = recipientList.ToArray();
List <XUri> viaList = new List <XUri>();
foreach (string via in _message.Headers.DreamEventVia)
{
viaList.Add(new XUri(via));
}
Via = viaList.ToArray();
// attach an Id, if one does not exist
Id = message.Headers.DreamEventId;
if (string.IsNullOrEmpty(Id))
{
Id = Guid.NewGuid().ToString();
}
}
public void Can_clone_a_memory_stream_message()
{
var text = "blah";
var stream = new MemoryStream();
var writer = new StreamWriter(stream);
writer.Write(text);
writer.Flush();
stream.Position = 0;
var m = new DreamMessage(DreamStatus.Ok, new DreamHeaders().Add("foo", "bar"), MimeType.TEXT, stream.Length, stream);
m.Headers.Add("baz", "blah");
_log.Debug("about to clone");
var m2 = m.Clone();
var reader = new StreamReader(m2.ToStream());
Assert.AreEqual(text, reader.ReadToEnd());
Assert.AreEqual(m.ContentType.ToString(), m2.ContentType.ToString());
Assert.AreEqual(m.Headers["foo"], m2.Headers["foo"]);
Assert.AreEqual(m.Headers["baz"], m2.Headers["baz"]);
}
public void Can_clone_a_memory_stream_message_that_has_been_read()
{
var text = "blah";
var stream = new MemoryStream();
var writer = new StreamWriter(stream);
writer.Write(text);
writer.Flush();
var m = new DreamMessage(DreamStatus.Ok, new DreamHeaders().Add("foo", "bar"), MimeType.TEXT, stream.Length, stream);
m.Headers.Add("baz", "blah");
var m2 = m.Clone();
var reader = new StreamReader(m2.ToStream());
Assert.AreEqual(text, reader.ReadToEnd());
Assert.AreEqual(m.ContentType.ToString(), m2.ContentType.ToString());
Assert.AreEqual(m.Headers["foo"], m2.Headers["foo"]);
Assert.AreEqual(m.Headers["baz"], m2.Headers["baz"]);
}
public void Can_clone_xdoc_message()
{
var m = new DreamMessage(DreamStatus.Ok, new DreamHeaders().Add("foo", "bar"), new XDoc("doc"));
m.Headers.Add("baz", "blah");
var m2 = m.Clone();
Assert.AreEqual(m.ToDocument().ToCompactString(), m2.ToDocument().ToCompactString());
Assert.AreEqual(m.Headers["foo"], m2.Headers["foo"]);
Assert.AreEqual(m.Headers["baz"], m2.Headers["baz"]);
}
public void Can_clone_no_content_message()
{
var m = new DreamMessage(DreamStatus.Ok, new DreamHeaders().Add("foo", "bar"));
m.Headers.Add("baz", "blah");
var m2 = m.Clone();
Assert.AreEqual(m.ToText(), m2.ToText());
Assert.AreEqual(m.Headers["foo"], m2.Headers["foo"]);
Assert.AreEqual(m.Headers["baz"], m2.Headers["baz"]);
}
public void Can_clone_byte_message()
{
var m = new DreamMessage(DreamStatus.Ok, new DreamHeaders().Add("foo", "bar"), MimeType.TIFF, new byte[] { 1, 2, 3, 4 });
m.Headers.Add("baz", "blah");
var m2 = m.Clone();
Assert.AreEqual(m.ToBytes(), m2.ToBytes());
Assert.AreEqual(m.ContentType.ToString(), m2.ContentType.ToString());
Assert.AreEqual(m.Headers["foo"], m2.Headers["foo"]);
Assert.AreEqual(m.Headers["baz"], m2.Headers["baz"]);
}
public void Can_clone_a_null_stream_message()
{
var m = new DreamMessage(DreamStatus.Ok, new DreamHeaders().Add("foo", "bar"), MimeType.TEXT, Stream.Null.Length, Stream.Null);
m.Headers.Add("baz", "blah");
var m2 = m.Clone();
Assert.AreEqual(0, m2.ContentLength);
Assert.AreEqual(m.ContentType.ToString(), m2.ContentType.ToString());
Assert.AreEqual(m.Headers["foo"], m2.Headers["foo"]);
Assert.AreEqual(m.Headers["baz"], m2.Headers["baz"]);
}
private DreamMessage MemorizeAndClone(DreamMessage request)
{
return request.IsCloneable ? request.Clone() : new DreamMessage(request.Status,request.Headers,request.ContentType,request.ToBytes());
}
private DreamMessage MemorizeAndClone(DreamMessage request)
{
return(request.IsCloneable ? request.Clone() : new DreamMessage(request.Status, request.Headers, request.ContentType, request.ToBytes()));
}
//--- Constructors ---
/// <summary>
/// Create a new event from a dream message.
/// </summary>
/// <param name="message">Message to parse.</param>
public DispatcherEvent(DreamMessage message)
{
// sanity check the input
string[] origins = message.Headers.DreamEventOrigin;
if(origins.Length == 0) {
throw new DreamBadRequestException(string.Format("message must specify at least one DreamEventOrigin header"));
}
if(string.IsNullOrEmpty(message.Headers.DreamEventChannel)) {
throw new DreamBadRequestException("message must have exactly one DreamEventChannel header");
}
// parse message
_message = message.Clone();
Channel = new XUri(_message.Headers.DreamEventChannel);
if(!string.IsNullOrEmpty(_message.Headers.DreamEventResource)) {
Resource = new XUri(_message.Headers.DreamEventResource);
}
List<XUri> originList = new List<XUri>();
foreach(string origin in origins) {
originList.Add(new XUri(origin));
}
Origins = originList.ToArray();
List<DispatcherRecipient> recipientList = new List<DispatcherRecipient>();
foreach(string recipient in _message.Headers.DreamEventRecipients) {
recipientList.Add(new DispatcherRecipient(new XUri(recipient)));
}
Recipients = recipientList.ToArray();
List<XUri> viaList = new List<XUri>();
foreach(string via in _message.Headers.DreamEventVia) {
viaList.Add(new XUri(via));
}
Via = viaList.ToArray();
// attach an Id, if one does not exist
Id = message.Headers.DreamEventId;
if(string.IsNullOrEmpty(Id)) {
Id = Guid.NewGuid().ToString();
}
}
private Yield HandleInvoke(Action <string> activity, Plug plug, string verb, XUri uri, DreamMessage request, Result <DreamMessage> response)
{
Result <IAsyncResult> async;
// remove internal headers
request.Headers.DreamTransport = null;
// set request headers
request.Headers.Host = uri.Host;
if (request.Headers.UserAgent == null)
{
request.Headers.UserAgent = "Dream/" + DreamUtil.DreamVersion;
}
// add cookies to request
if (request.HasCookies)
{
request.Headers[DreamHeaders.COOKIE] = DreamCookie.RenderCookieHeader(request.Cookies);
}
// check if we can pool the request with an existing one
if ((plug.Credentials == null) && StringUtil.ContainsInvariantIgnoreCase(verb, "GET"))
{
// create the request hashcode
StringBuilder buffer = new StringBuilder();
buffer.AppendLine(uri.ToString());
foreach (KeyValuePair <string, string> header in request.Headers)
{
buffer.Append(header.Key).Append(": ").Append(header.Value).AppendLine();
}
Guid hash = new Guid(StringUtil.ComputeHash(buffer.ToString()));
// check if an active connection exists
Result <DreamMessage> relay = null;
lock (_requests) {
List <Result <DreamMessage> > pending;
if (_requests.TryGetValue(hash, out pending))
{
relay = new Result <DreamMessage>(response.Timeout);
pending.Add(relay);
}
else
{
pending = new List <Result <DreamMessage> >();
pending.Add(response);
_requests[hash] = pending;
}
}
// check if we're pooling a request
if (relay != null)
{
// wait for the relayed response
yield return(relay);
response.Return(relay);
yield break;
}
else
{
// NOTE (steveb): we use TaskEnv.Instantaneous so that we don't exit the current stack frame before we've executed the continuation;
// otherwise, we'll trigger an exception because our result object may not be set.
// create new handler to multicast the response to the relays
response = new Result <DreamMessage>(response.Timeout, TaskEnv.Instantaneous);
response.WhenDone(_ => {
List <Result <DreamMessage> > pending;
lock (_requests) {
_requests.TryGetValue(hash, out pending);
_requests.Remove(hash);
}
// this check should never fail!
if (response.HasException)
{
// send the exception to all relays
foreach (Result <DreamMessage> result in pending)
{
result.Throw(response.Exception);
}
}
else
{
DreamMessage original = response.Value;
// only memorize the message if it needs to be cloned
if (pending.Count > 1)
{
// clone the message to all relays
original.Memorize(new Result()).Wait();
foreach (var result in pending)
{
result.Return(original.Clone());
}
}
else
{
// relay the original message
pending[0].Return(original);
}
}
});
}
}
// initialize request
activity("pre WebRequest.Create");
var httpRequest = (HttpWebRequest)WebRequest.Create(uri.ToUri());
activity("post WebRequest.Create");
httpRequest.Method = verb;
httpRequest.Timeout = System.Threading.Timeout.Infinite;
httpRequest.ReadWriteTimeout = System.Threading.Timeout.Infinite;
// Note (arnec): httpRequest AutoRedirect is disabled because Plug is responsible for it (this allows redirects to follow
// the appropriate handler instead staying stuck in http end point land
httpRequest.AllowAutoRedirect = false;
// Note from http://support.microsoft.com/kb/904262
// The HTTP request is made up of the following parts:
// 1. Sending the request is covered by using the HttpWebRequest.Timeout method.
// 2. Getting the response header is covered by using the HttpWebRequest.Timeout method.
// 3. Reading the body of the response is not covered by using the HttpWebResponse.Timeout method. In ASP.NET 1.1 and in later versions, reading the body of the response
// is covered by using the HttpWebRequest.ReadWriteTimeout method. The HttpWebRequest.ReadWriteTimeout method is used to handle cases where the response headers are
// retrieved in a timely manner but where the reading of the response body times out.
httpRequest.KeepAlive = false;
httpRequest.ProtocolVersion = System.Net.HttpVersion.Version10;
// TODO (steveb): set default proxy
//httpRequest.Proxy = WebProxy.GetDefaultProxy();
//httpRequest.Proxy.Credentials = CredentialCache.DefaultCredentials;
// set credentials
if (plug.Credentials != null)
{
httpRequest.Credentials = plug.Credentials;
httpRequest.PreAuthenticate = true;
}
else if (!string.IsNullOrEmpty(uri.User) || !string.IsNullOrEmpty(uri.Password))
{
httpRequest.Credentials = new NetworkCredential(uri.User ?? string.Empty, uri.Password ?? string.Empty);
httpRequest.PreAuthenticate = true;
// Note (arnec): this manually adds the basic auth header, so it can authorize
// in a single request without requiring challenge
var authbytes = Encoding.ASCII.GetBytes(string.Concat(uri.User ?? string.Empty, ":", uri.Password ?? string.Empty));
var base64 = Convert.ToBase64String(authbytes);
httpRequest.Headers.Add(DreamHeaders.AUTHORIZATION, "Basic " + base64);
}
// add request headres
foreach (KeyValuePair <string, string> header in request.Headers)
{
HttpUtil.AddHeader(httpRequest, header.Key, header.Value);
}
// send message stream
if ((request.ContentLength != 0) || (verb == Verb.POST))
{
async = new Result <IAsyncResult>();
try {
activity("pre BeginGetRequestStream");
httpRequest.BeginGetRequestStream(async.Return, null);
activity("post BeginGetRequestStream");
} catch (Exception e) {
activity("pre HandleResponse 1");
if (!HandleResponse(activity, e, null, response))
{
_log.ErrorExceptionMethodCall(e, "HandleInvoke@BeginGetRequestStream", verb, uri);
try {
httpRequest.Abort();
} catch { }
}
yield break;
}
activity("pre yield BeginGetRequestStream");
yield return(async.Catch());
activity("post yield BeginGetRequestStream");
// send request
Stream outStream;
try {
activity("pre EndGetRequestStream");
outStream = httpRequest.EndGetRequestStream(async.Value);
activity("pre EndGetRequestStream");
} catch (Exception e) {
activity("pre HandleResponse 2");
if (!HandleResponse(activity, e, null, response))
{
_log.ErrorExceptionMethodCall(e, "HandleInvoke@EndGetRequestStream", verb, uri);
try {
httpRequest.Abort();
} catch { }
}
yield break;
}
// copy data
using (outStream) {
Result <long> res;
activity("pre yield CopyStream");
yield return(res = request.ToStream().CopyTo(outStream, request.ContentLength, new Result <long>(TimeSpan.MaxValue)).Catch());
activity("post yield CopyStream");
if (res.HasException)
{
activity("pre HandleResponse 3");
if (!HandleResponse(activity, res.Exception, null, response))
{
_log.ErrorExceptionMethodCall(res.Exception, "*****@*****.**", verb, uri);
try {
httpRequest.Abort();
} catch { }
}
yield break;
}
}
}
request = null;
// wait for response
async = new Result <IAsyncResult>(response.Timeout);
try {
activity("pre BeginGetResponse");
httpRequest.BeginGetResponse(async.Return, null);
activity("post BeginGetResponse");
} catch (Exception e) {
activity("pre HandleResponse 4");
if (!HandleResponse(activity, e, null, response))
{
_log.ErrorExceptionMethodCall(e, "HandleInvoke@BeginGetResponse", verb, uri);
try {
httpRequest.Abort();
} catch { }
}
yield break;
}
activity("pre yield BeginGetResponse");
yield return(async.Catch());
activity("post yield BeginGetResponse");
// check if an error occurred
if (async.HasException)
{
activity("pre HandleResponse 5");
if (!HandleResponse(activity, async.Exception, null, response))
{
_log.ErrorExceptionMethodCall(async.Exception, "HandleInvoke@BeginGetResponse", verb, uri);
try {
httpRequest.Abort();
} catch { }
}
yield break;
}
else
{
// handle response
try {
HttpWebResponse httpResponse = (HttpWebResponse)httpRequest.EndGetResponse(async.Value);
activity("pre HandleResponse 6");
if (!HandleResponse(activity, null, httpResponse, response))
{
try {
httpRequest.Abort();
} catch { }
}
} catch (Exception e) {
activity("pre HandleResponse 7");
if (!HandleResponse(activity, e, null, response))
{
_log.ErrorExceptionMethodCall(e, "HandleInvoke@EndGetResponse", verb, uri);
try {
httpRequest.Abort();
} catch { }
}
yield break;
}
}
}
public IEnumerator<IYield> Invoke(Plug plug, string verb, XUri uri, DreamMessage request, Result<DreamMessage> response)
{
MockPlug.MockInvokeDelegate callback;
var match = GetBestMatch(uri);
if(match.Item1 == null) {
response.Return(DreamMessage.Ok(new XDoc("empty")));
yield break;
}
lock(_registry) {
callback = _registry[match.Item1];
}
yield return Async.Fork(() => callback(plug, verb, uri, request.Clone(), response), new Result(TimeSpan.MaxValue));
}