public List <string> exposedHeaders = new List <string>(); //List of headers that are exposed to CORS
public async Task OnHTTPRequest(HttpContext e)
{
//Do CORS stuff
e.Response.Headers.Add("X-Delta-Server-Instance-ID", conn.instanceId);
e.Response.Headers.Add("X-Delta-Server-Type", conn.server_type.ToString().ToUpper());
e.Response.Headers.Add("Access-Control-Expose-Headers", GetExposedHeadersString());
e.Response.Headers.Add("Access-Control-Allow-Headers", GetExposedHeadersString());
e.Response.Headers.Add("Access-Control-Allow-Origin", "*");
e.Response.Headers.Add("Access-Control-Allow-Methods", "GET, POST, OPTIONS, DELETE, PUT, PATCH");
if (e.Request.Method.ToUpper() == "OPTIONS")
{
await WriteStringToBody(e, "Dropping OPTIONS request. Hello CORS!", "text/plain", 200);
return;
}
//Log
conn.Log("DeltaWebServer-OnHTTPRequest", $"Got HTTP {e.Request.Method.ToUpper()} -> {e.Request.Path + e.Request.QueryString}", DeltaLogLevel.Debug);
stat_requests_handled++;
//Check if this is a status request
if (e.Request.Path == "/status.json")
{
await WriteStringToBody(e, JsonConvert.SerializeObject(GetStatus()), "application/json");
return;
}
//Find a matching service
DeltaWebServiceDefinition service = FindService(e.Request.Path);
//Check to see if we found a service
if (service == null)
{
await WriteStringToBody(e, "Not Found", "text/plain", 404);
return;
}
//Parse args
Dictionary <string, string> args = MatchWildcardArgs(e.Request.Path.ToString().Split('/'), service.GetTemplateUrl().Split('/'));
//Create a new session
DeltaWebService session = service.OpenRequest(conn, e);
try
{
//Preauthenticate this session
if (!await session.OnPreRequest())
{
return;
}
//Set args on this session
if (!await session.SetArgs(args))
{
return;
}
//Run the actual code
await session.OnRequest();
} catch (DeltaWebException wex)
{
await WriteStringToBody(e, wex.text, "text/plain", wex.httpCode);
} catch (Exception ex)
{
await WriteStringToBody(e, $"Internal Server Error. Please try again later.\n\nDEBUG DATA:\nService={service.GetType().Name}\nAppVersion={conn.system_version_major}.{conn.system_version_minor}\nLibVersion={DeltaConnection.LIB_VERSION_MAJOR}.{DeltaConnection.LIB_VERSION_MINOR}\nDeltaServerInstanceID={conn.instanceId}\nRequestID={session._request_id}", "text/plain", 500);
conn.Log("DeltaWebServer-OnHTTPRequest", $"Internal server error. Service={service.GetType().Name}, RequestID={session._request_id}, AppVersion={conn.system_version_major}.{conn.system_version_minor}, LibVersion={DeltaConnection.LIB_VERSION_MAJOR}.{DeltaConnection.LIB_VERSION_MINOR}, URL={e.Request.Path.Value}{e.Request.QueryString}, Exception={ex.Message}, StackTrace={ex.StackTrace}", DeltaLogLevel.High);
}
}
