public IContentResponse Get(string method, string rawUrl, NameValueCollection headers, Stream inputStream)
{
long length;
using (new MutexLock(2000, _lockName))
{
using (Stream output = new FileStream(_filename, FileMode.OpenOrCreate, FileAccess.Read, FileShare.Read))
length = output.Length;
}
using (Stream rawinput = new FileStream(_filename, FileMode.OpenOrCreate, FileAccess.Read, FileShare.ReadWrite))
{
long position = 0;
Match m = Regex.Match(headers["If-None-Match"] ?? String.Empty, "^\"position:(?<position>\\d+)\"$");
if (m.Success)
{
position = Math.Min(Math.Max(0, long.Parse(m.Groups["position"].Value)), length);
}
using (Stream input = new ClampedStream(rawinput, position, Math.Max(0, length - position)))
{
PingbackRecord rec = PingbackRecord.ParseFrom(input);
return(new DynamicResponse("application/vnd.google.protobuf", rec.ToByteArray())
{
ETag = String.Format("position:{0}", length),
LastModified = rec.RecordsCount > 0
? rec.RecordsList[rec.RecordsCount - 1].When
: DateTime.Now,
});
}
}
}
public void Playback(Uri sourceSite, string stateFile)
{
Uri pingbackApi;
if (!TryGetPingbackFromHeader(out pingbackApi))
{
throw new ArgumentException("The site does not have an X-Pingback header.");
}
if (!Directory.Exists(Path.GetDirectoryName(stateFile)))
{
Directory.CreateDirectory(Path.GetDirectoryName(stateFile));
}
using (Stream stream = new FileStream(stateFile, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.Read))
{
stream.Seek(0, SeekOrigin.End);
HttpRequestUtil http = new HttpRequestUtil(sourceSite);
http.RequestHeaders["If-None-Match"] = String.Format("\"position:{0}\"", stream.Position);
if (http.Get(sourceSite.PathAndQuery) == HttpStatusCode.NotModified)
{
return;
}
if (http.StatusCode != HttpStatusCode.OK)
{
throw new ApplicationException(String.Format("Unexpected http result: {0}/{1}", (int)http.StatusCode, http.StatusCode));
}
PingbackRecord response = PingbackRecord.ParseFrom(http.Content);
foreach (PingbackInfo ping in response.RecordsList)
{
try
{
int errorCode;
string serverMessage;
Uri source = new Uri(ping.SourceUri, UriKind.Absolute);
Uri target = new Uri(_targetLink, ping.TargetUri);
if (!SendPingback(source, target, pingbackApi, LogError, out errorCode, out serverMessage))
{
LogError(String.Format("Failed to register pingback from {0}, {1}", ping.SourceUri, serverMessage));
}
}
catch (Exception e)
{
LogError(String.Format("Failed to register pingback from {0}, {1}", ping.SourceUri, e.Message));
}
}
response.WriteTo(stream);
}
}