protected JObject ProcessRequest(HttpContext context, JObject request)
{
if (!request.ContainsKey("id"))
{
return(null);
}
if (!request.ContainsKey("method") || !request.ContainsKey("params") || !(request["params"] is JArray))
{
return(RpcMessage.CreateErrorResult(request["id"], RpcMessage.INVALID_REQUEST, "Invalid Request"));
}
JToken result = new JObject();
JObject response = RpcMessage.CreateResponse(request["id"]);
try
{
JToken id = request["id"];
string method = request["method"].Value <string>();
JArray parameters = (JArray)request["params"];
if (Process(id, method, parameters, out result))
{
response["result"] = result;
}
else
{
response["error"] = result;
}
}
catch (Exception e)
{
response["error"] = RpcMessage.CreateErrorResult(request["id"], e.HResult, e.Message);
}
return(response);
}
protected async Task ProcessAsync(HttpContext context)
{
context.Response.Headers["Access-Control-Allow-Origin"] = "*";
context.Response.Headers["Access-Control-Allow-Methods"] = "GET, POST";
context.Response.Headers["Access-Control-Allow-Headers"] = "Content-Type";
context.Response.Headers["Access-Control-Max-Age"] = "31536000";
if (context.Request.Method != "GET" && context.Request.Method != "POST")
{
return;
}
JObject request = null;
if (context.Request.Method == "GET")
{
string jsonrpc = context.Request.Query["jsonrpc"];
string id = context.Request.Query["id"];
string method = context.Request.Query["method"];
string type = context.Request.Query["type"];
string parameters = context.Request.Query["params"];
if (!string.IsNullOrEmpty(id) && !string.IsNullOrEmpty(method) && !string.IsNullOrEmpty(parameters))
{
try
{
parameters = Encoding.UTF8.GetString(Convert.FromBase64String(parameters));
}
catch (FormatException) { }
request = new JObject();
if (!string.IsNullOrEmpty(jsonrpc))
{
request["jsonrpc"] = jsonrpc;
}
request["id"] = double.Parse(id);
request["method"] = method;
request["type"] = type;
request["params"] = JArray.Parse(parameters);
}
}
else if (context.Request.Method == "POST")
{
using (StreamReader reader = new StreamReader(context.Request.Body))
{
try
{
request = JObject.Parse(reader.ReadToEnd());
}
catch (FormatException) { }
}
}
JObject response = RpcMessage.CreateResponse(request["id"]);
if (request == null)
{
response["error"] = RpcMessage.CreateErrorResult(null, RpcMessage.PARSE_ERROR, "Parse error");
}
else
{
response = ProcessRequest(context, request);
}
if (response == null)
{
return;
}
context.Response.ContentType = "application/json-rpc";
await context.Response.WriteAsync(response.ToString(), Encoding.UTF8);
}
