static void Main(string[] args)
{
if (args.Count() > 1)
{
switch (args[0])
{
case "-url":
using (Radio radio = new Radio(args[1]))
{
radio.OnCurrentSongChanged += (sender, eventArgs) =>
{
Console.WriteLine(eventArgs.NewSong.Artist + " - " + eventArgs.NewSong.Title);
};
radio.Start();
Console.ReadLine();
GC.KeepAlive(radio);
}
break;
}
}
}
public void Start(string pluginsPath = null)
{
if (string.IsNullOrEmpty(Url))
{
Radio.Log("The specified Url is empty.", this);
return;
}
if (pluginsPath == null)
{
pluginsPath = Directory.GetCurrentDirectory() + "\\plugins";
}
var plugins = pluginManager.LoadPlugins(pluginsPath);
OnPluginsLoaded?.Invoke(this, new PluginEventArgs(plugins));
OnCurrentSongChanged += pluginManager.OnCurrentSongChanged;
OnStreamStart += pluginManager.OnStreamStart;
OnStreamUpdate += pluginManager.OnStreamUpdate;
OnStreamOver += pluginManager.OnStreamOver;
Running = true;
runningTask = Task.Run(GetHttpStreamAsync);
}
void GetHttpStream()
{
do
{
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);
request.Headers.Add("icy-metadata", "1");
request.ReadWriteTimeout = 10 * 1000;
request.Timeout = 10 * 1000;
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
//get the position of metadata
int metaInt = Convert.ToInt32(response.GetResponseHeader("icy-metaint"));
using (Stream socketStream = response.GetResponseStream())
{
byte[] buffer = new byte[16384];
int metadataLength = 0;
int streamPosition = 0;
int bufferPosition = 0;
int readBytes = 0;
StringBuilder metadataSb = new StringBuilder();
while (Running)
{
if (bufferPosition >= readBytes)
{
readBytes = socketStream.Read(buffer, 0, buffer.Length);
bufferPosition = 0;
}
if (readBytes <= 0)
{
Radio.Log("Stream over", this);
break;
}
if (metadataLength == 0)
{
if (streamPosition + readBytes - bufferPosition <= metaInt)
{
streamPosition += readBytes - bufferPosition;
ProcessStreamData(buffer, ref bufferPosition, readBytes - bufferPosition);
continue;
}
ProcessStreamData(buffer, ref bufferPosition, metaInt - streamPosition);
metadataLength = Convert.ToInt32(buffer[bufferPosition++]) * 16;
//check if there's any metadata, otherwise skip to next block
if (metadataLength == 0)
{
streamPosition = Math.Min(readBytes - bufferPosition, metaInt);
ProcessStreamData(buffer, ref bufferPosition, streamPosition);
continue;
}
}
//get the metadata and reset the position
while (bufferPosition < readBytes)
{
metadataSb.Append(Convert.ToChar(buffer[bufferPosition++]));
metadataLength--;
if (metadataLength == 0)
{
Metadata = metadataSb.ToString();
metadataSb.Clear();
streamPosition = Math.Min(readBytes - bufferPosition, metaInt);
ProcessStreamData(buffer, ref bufferPosition, streamPosition);
break;
}
}
}
}
}
}
catch (IOException ex)
{
Radio.Log(string.Format("Handled IOException, reconnecting. Details:\n{0}\n{1}", ex.Message, ex.StackTrace), this);
OnStreamOver?.Invoke(this, new StreamOverEventArgs());
}
catch (SocketException ex)
{
Radio.Log(string.Format("Handled SocketException, reconnecting. Details:\n{0}\n{1}", ex.Message, ex.StackTrace), this);
OnStreamOver?.Invoke(this, new StreamOverEventArgs());
}
catch (WebException ex)
{
Radio.Log(string.Format("Handled WebException, reconnecting. Details:\n{0}\n{1}", ex.Message, ex.StackTrace), this);
OnStreamOver?.Invoke(this, new StreamOverEventArgs());
}
} while (Running);
}
async Task GetHttpStreamAsync()
{
do
{
try
{
using var streamHandler = await BaseStreamHandler.GetStreamHandler(Url, httpClient);
await streamHandler.StartAsync();
{
//get the position of metadata
int metaInt = streamHandler.GetIceCastMetaInterval();
using MemoryStream metadataData = new MemoryStream();
byte[] buffer = null;
int metadataLength = 0;
int streamPosition = 0;
int bufferPosition = 0;
int readBytes = 0;
OnStreamStart?.Invoke(this, new StreamStartEventArgs(streamHandler.GetCodec()));
while (Running)
{
if (bufferPosition >= readBytes)
{
(readBytes, buffer) = await streamHandler.ReadAsync();
bufferPosition = 0;
}
if (readBytes <= 0)
{
Radio.Log("Stream over", this);
break;
}
if (metadataLength == 0)
{
if (metaInt == 0 || streamPosition + readBytes - bufferPosition <= metaInt)
{
streamPosition += readBytes - bufferPosition;
ProcessStreamData(buffer, ref bufferPosition, readBytes - bufferPosition);
continue;
}
ProcessStreamData(buffer, ref bufferPosition, metaInt - streamPosition);
metadataLength = Convert.ToInt32(buffer[bufferPosition++]) * 16;
//check if there's any metadata, otherwise skip to next block
if (metadataLength == 0)
{
streamPosition = Math.Min(readBytes - bufferPosition, metaInt);
ProcessStreamData(buffer, ref bufferPosition, streamPosition);
continue;
}
}
//get the metadata and reset the position
while (bufferPosition < readBytes)
{
metadataData.WriteByte(buffer[bufferPosition++]);
metadataLength--;
if (metadataLength == 0)
{
var metadataBuffer = metadataData.ToArray();
Metadata = Encoding.UTF8.GetString(metadataBuffer);
metadataData.SetLength(0);
streamPosition = Math.Min(readBytes - bufferPosition, metaInt);
ProcessStreamData(buffer, ref bufferPosition, streamPosition);
break;
}
}
}
}
}
catch (IOException ex)
{
Radio.Log(string.Format("Handled IOException, reconnecting. Details:\n{0}\n{1}", ex.Message, ex.StackTrace), this);
OnStreamOver?.Invoke(this, new StreamOverEventArgs());
}
catch (SocketException ex)
{
Radio.Log(string.Format("Handled SocketException, reconnecting. Details:\n{0}\n{1}", ex.Message, ex.StackTrace), this);
OnStreamOver?.Invoke(this, new StreamOverEventArgs());
}
catch (WebException ex)
{
Radio.Log(string.Format("Handled WebException, reconnecting. Details:\n{0}\n{1}", ex.Message, ex.StackTrace), this);
OnStreamOver?.Invoke(this, new StreamOverEventArgs());
}
catch (Exception ex)
{
Radio.Log(string.Format("Handled Exception, reconnecting. Details:\n{0}\n{1}", ex.Message, ex.StackTrace), this);
OnStreamOver?.Invoke(this, new StreamOverEventArgs());
}
} while (Running);
}