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Fixed Unhandled Exceptions Thrown by Web Client

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Unhandled exception with the message "WebClient does not support
concurrent I/O operations" being thrown by query

Created asynchronous query function, and additionally created separate
instances of query for each method.
This commit is contained in:
streibeb 2015-01-02 15:57:12 -06:00
parent faa7542259
commit 3cf603b1ad
1 changed files with 79 additions and 21 deletions
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90
SpotifyAPI/SpoitfyLocalAPI/RemoteHandler.cs
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@ -18,21 +18,28 @@ namespace SpotifyAPI.SpotifyLocalAPI
public String host = "127.0.0.1";
ExtendedWebClient wc;
private class ExtendedWebClientInstance : ExtendedWebClient
{
internal ExtendedWebClientInstance()
{
Timeout = 2000;
Proxy = null;
Headers.Add("Origin", "https://embed.spotify.com");
Headers.Add("Referer", "https://embed.spotify.com/?uri=spotify:track:5Zp4SWOpbuOdnsxLqwgutt");
}
}
internal static RemoteHandler GetInstance()
{
// Is this supposed to return the current instance?
return instance;
}
internal RemoteHandler()
{
wc = new ExtendedWebClient();
wc.Timeout = 2000;
wc.Proxy = null;
wc.Headers.Add("Origin", "https://embed.spotify.com");
wc.Headers.Add("Referer", "https://embed.spotify.com/?uri=spotify:track:5Zp4SWOpbuOdnsxLqwgutt");
}
internal Boolean Init()
{
oauthKey = GetOAuthKey();
@ -41,22 +48,27 @@ namespace SpotifyAPI.SpotifyLocalAPI
return false;
return true;
}
internal void SendPauseRequest()
internal async void SendPauseRequest()
{
query("remote/pause.json?pause=true", true, true, -1);
await QueryAsync("remote/pause.json?pause=true", true, true, -1);
}
internal void SendPlayRequest()
internal async void SendPlayRequest()
{
query("remote/pause.json?pause=false", true, true, -1);
await QueryAsync("remote/pause.json?pause=false", true, true, -1);
}
internal void SendPlayRequest(String url)
internal async void SendPlayRequest(String url)
{
query("remote/play.json?uri=" + url, true, true, -1);
await QueryAsync("remote/play.json?uri=" + url, true, true, -1);
}
internal void SendQueueRequest(String url)
internal async void SendQueueRequest(String url)
{
query("remote/play.json?uri=" + url + "?action=queue", true, true, -1);
await QueryAsync("remote/play.json?uri=" + url + "?action=queue", true, true, -1);
}
internal StatusResponse Update()
{
String response = query("remote/status.json", true, true, -1);
@ -70,6 +82,7 @@ namespace SpotifyAPI.SpotifyLocalAPI
List<StatusResponse> raw = (List<StatusResponse>)JsonConvert.DeserializeObject(response, typeof(List<StatusResponse>));
return raw[0];
}
internal String GetOAuthKey()
{
String raw = "";
@ -82,7 +95,7 @@ namespace SpotifyAPI.SpotifyLocalAPI
return (String)lol["t"];
}
internal String GetCFID()
internal string GetCFID()
{
string a = query("simplecsrf/token.json", false, false, -1);
a = a.Replace(@"\", "");
@ -95,7 +108,8 @@ namespace SpotifyAPI.SpotifyLocalAPI
return "";
return d[0].token;
}
internal String query(string request, bool oauth, bool cfid, int wait)
internal string query(string request, bool oauth, bool cfid, int wait)
{
string parameters = "?&ref=&cors=&_=" + GetTimestamp();
if (request.Contains("?"))
@ -123,15 +137,59 @@ namespace SpotifyAPI.SpotifyLocalAPI
try
{
//Need to find a better solution
var wc = new ExtendedWebClientInstance();
if (SpotifyLocalAPIClass.IsSpotifyRunning())
response = "[ " + wc.DownloadString(a) + " ]";
}
catch (Exception z)
{
Console.WriteLine(z.Message);
return "";
}
return response;
}
internal async Task<string> QueryAsync(string request, bool oauth, bool cfid, int wait)
{
string parameters = "?&ref=&cors=&_=" + GetTimestamp();
if (request.Contains("?"))
{
parameters = parameters.Substring(1);
}
if (oauth)
{
parameters += "&oauth=" + oauthKey;
}
if (cfid)
{
parameters += "&csrf=" + cfidKey;
}
if (wait != -1)
{
parameters += "&returnafter=" + wait;
parameters += "&returnon=login%2Clogout%2Cplay%2Cpause%2Cerror%2Cap";
}
string a = "http://" + host + ":4380/" + request + parameters;
string response = "";
try
{
//Need to find a better solution
var wc = new ExtendedWebClientInstance();
if (SpotifyLocalAPIClass.IsSpotifyRunning())
response = "[ " + await wc.DownloadStringTaskAsync(new Uri(a)) + " ]";
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return "";
}
return response;
}
internal int GetTimestamp()
{
return Convert.ToInt32((DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0)).TotalSeconds);