static async Task PerformHttpRequest(string url, Func <object, object, object, LuaResult> cb, string method = "GET", string data = "", LuaTable headers = null)
{
var webRequest = HttpWebRequest.CreateHttp(url);
webRequest.Method = method;
var senv = ScriptEnvironment.CurrentEnvironment;
if (headers != null)
{
foreach (var header in headers)
{
var key = header.Key.ToString();
var value = header.Value.ToString();
if (key.Equals("content-type", StringComparison.InvariantCultureIgnoreCase))
{
webRequest.ContentType = value;
}
else
{
webRequest.Headers.Add(key, value);
}
}
}
try
{
if (data != string.Empty)
{
var reqStream = await webRequest.GetRequestStreamAsync();
var dataBytes = Encoding.UTF8.GetBytes(data);
await reqStream.WriteAsync(dataBytes, 0, dataBytes.Length);
}
var response = await webRequest.GetResponseAsync() as HttpWebResponse;
// store headers
var respHeaders = new LuaTable();
for (int i = 0; i < response.Headers.Count; i++)
{
respHeaders[response.Headers.Keys[i]] = response.Headers[i];
}
// get the response
var respStream = response.GetResponseStream();
var streamReader = new StreamReader(respStream);
var responseText = await streamReader.ReadToEndAsync();
try
{
var penv = ScriptEnvironment.PushEnvironment(senv);
cb(0, responseText, respHeaders);
penv.PopEnvironment();
}
catch (Exception e)
{
webRequest.Log().Error("Error in callback for web request: {0}", e.Message);
ScriptEnvironment.PrintLuaStackTrace(e);
}
}
catch (WebException e)
{
webRequest.Log().Warn("Web request to {0} failed: {1}", url, e.Message);
try
{
var penv = ScriptEnvironment.PushEnvironment(senv);
cb((int)((HttpWebResponse)e.Response).StatusCode, null, null);
penv.PopEnvironment();
}
catch (Exception e2)
{
webRequest.Log().Error("Error in callback for web request: {0}", e2.Message);
ScriptEnvironment.PrintLuaStackTrace(e2);
}
}
}
