public async Task ProcessAsync(HttpContext context)
{
JObject jsonParam = null;
try
{
context.Response.ContentType = "application/json;charset=UTF-8";
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")
{
string jsonrpc = context.Request.Query["jsonrpc"];
string id = context.Request.Query["id"];
string _method = context.Request.Query["method"];
string _params = context.Request.Query["params"];
if (jsonrpc == null)
{
throw new Exception("do not have element:jsonrpc");
}
if (id == null)
{
throw new Exception("do not have element:id");
}
if (_method == null)
{
throw new Exception("do not have element:method");
}
if (_params == null)
{
throw new Exception("do not have element:params");
}
jsonParam = new JObject();
jsonParam["jsonrpc"] = jsonrpc;
jsonParam["id"] = id;
jsonParam["method"] = _method;
jsonParam["params"] = JArray.Parse(_params);
}
else if (context.Request.Method == "POST")
{
var ctype = context.Request.ContentType;
if (ctype == "application/x-www-form-urlencoded" || (ctype.IndexOf("multipart/form-data;") == 0))
{
var form = await FormData.FromRequest(context.Request);
var _jsonrpc = form.mapParams["jsonrpc"];
var _id = long.Parse(form.mapParams["id"]);
var _method = form.mapParams["method"];
var _strparams = form.mapParams["params"];
if (_jsonrpc == null)
{
throw new Exception("do not have element:jsonrpc");
}
if (_id == null)
{
throw new Exception("do not have element:id");
}
if (_method == null)
{
throw new Exception("do not have element:method");
}
if (_strparams == null)
{
throw new Exception("do not have element:params");
}
jsonParam = new JObject();
jsonParam["jsonrpc"] = _jsonrpc;
jsonParam["id"] = _id;
jsonParam["method"] = _method;
jsonParam["params"] = JArray.Parse(_strparams);
}
else
{
var text = await FormData.GetStringFromRequest(context.Request);
jsonParam = JObject.Parse(text);
if (jsonParam["jsonrpc"] == null)
{
throw new Exception("do not have element:jsonrpc");
}
if (jsonParam["id"] == null)
{
throw new Exception("do not have element:id");
}
if (jsonParam["method"] == null)
{
throw new Exception("do not have element:method");
}
if (jsonParam["params"] == null)
{
throw new Exception("do not have element:params");
}
}
}
else
{
throw new Exception("not implement request method.");
}
if (mapAction.TryGetValue(jsonParam["method"].Value <string>(), out ActionRPC method))
{
var json = await method(jsonParam);
JObject result = new JObject();
result["result"] = json;
result["id"] = jsonParam["id"].Value <int>();
result["jsonrpc"] = "2.0";
await context.Response.WriteAsync(result.ToString());
}
else
{
throw new Exception("Do not have this method.");
}
}
catch (Exception err)
{
try
{
if (failAction != null)
{
var errorobj = await failAction(jsonParam, err.Message);
if (jsonParam == null)
{
jsonParam = new JObject();
jsonParam["jsonrpc"] = "2.0";
jsonParam["id"] = null;
}
jsonParam["error"] = errorobj.ToJObject();
await context.Response.WriteAsync(jsonParam.ToString());
}
else
{
var errorobj = new ErrorObject();
errorobj.data = jsonParam;
errorobj.message = err.Message;
errorobj.code = -32000;
if (jsonParam == null)
{
jsonParam = new JObject();
jsonParam["jsonrpc"] = "2.0";
jsonParam["id"] = null;
}
jsonParam["error"] = errorobj.ToJObject();
await context.Response.WriteAsync(jsonParam.ToString());
}
}
catch
{
}
}
}
public static async Task <FormData> FromRequest(Microsoft.AspNetCore.Http.HttpRequest request)
{
try
{
FormData data = new FormData();
foreach (var kv in request.Query)
{
data.mapParams[kv.Key] = kv.Value[0];
}
if (request.Method.ToUpper() == "POST")
{
if (request.ContentType == null)
{
return(data);
}
else if (request.ContentType == "application/x-www-form-urlencoded")
{
byte[] allfile = null;
int seek = 0;
var _clen = request.Headers["Content-Length"];
string clen = null;
if (_clen.Count > 0)
{
clen = _clen[0];
}
if (clen != null)
{
int leng = int.Parse(clen);
allfile = new byte[leng];
while (request.Body.CanRead)
{
int read = await request.Body.ReadAsync(allfile, seek, leng - seek);
seek += read;
if (read == 0)
{
break;
}
}
}
else
{
allfile = new byte[4 * 1024 * 1024];
while (request.Body.CanRead)
{
int read = await request.Body.ReadAsync(allfile, seek, 1024);
seek += read;
if (read == 0)
{
break;
}
}
}
string text = System.Text.Encoding.UTF8.GetString(allfile, 0, seek);
var infos = text.Split(new char[] { '=', '&' });
for (var i = 0; i < infos.Length / 2; i++)
{
data.mapParams[infos[i * 2]] = Uri.UnescapeDataString(infos[i * 2 + 1]);
}
}
else if (request.ContentType.IndexOf("multipart/form-data;") == 0)
{
byte[] allfile = null;
int seek = 0;
var _clen = request.Headers["Content-Length"];
string clen = null;
if (_clen.Count > 0)
{
clen = _clen[0];
}
if (clen != null)
{
int leng = int.Parse(clen);
allfile = new byte[leng];
while (request.Body.CanRead)
{
int read = await request.Body.ReadAsync(allfile, seek, leng - seek);
seek += read;
if (read == 0)
{
break;
}
}
}
else
{
allfile = new byte[4 * 1024 * 1024];
while (request.Body.CanRead)
{
int read = await request.Body.ReadAsync(allfile, seek, 1024);
seek += read;
if (read == 0)
{
break;
}
}
}
var iSplitTag = request.ContentType.IndexOf("=") + 1;
var sSplitTag = "--" + request.ContentType.Substring(iSplitTag);
var bSplitTag = System.Text.Encoding.ASCII.GetBytes(sSplitTag);
int iTag = ByteIndexOf(allfile, seek, bSplitTag, 0);
if (iTag < 0)
{
string s = System.Text.Encoding.ASCII.GetString(allfile, 0, seek);
}
else
{
while (iTag >= 0)
{
int iTagNext = ByteIndexOf(allfile, seek, bSplitTag, iTag + 1);
if (iTagNext < 0)
{
break;
}
var bs = System.Text.Encoding.ASCII.GetBytes("\r\n\r\n");
int iStart = iTag + bSplitTag.Length + 2;
int iDataStart = ByteIndexOf(allfile, seek, bs, iStart) + 4;
string s = System.Text.Encoding.ASCII.GetString(allfile, iStart, iDataStart - iStart);
List <string> infos = new List <string>(s.Split(new string[] { "; ", ": ", "\r\n", "=" }, StringSplitOptions.None));
var i = infos.IndexOf("name");
var name = infos[i + 1].Substring(1);
name = name.Substring(0, name.Length - 1);
byte[] ddata = new byte[iTagNext - iDataStart - 2];
Array.Copy(allfile, iDataStart, ddata, 0, ddata.Length);
if (infos.Contains("application/octet-stream"))
{
data.mapFiles[name] = ddata;
}
else
{
string txtData = System.Text.Encoding.UTF8.GetString(ddata);
data.mapParams[name] = Uri.UnescapeDataString(txtData);
}
iTag = iTagNext;
}
}
}
else
{
return(null);
}
}
return(data);
}
catch
{
return(null);
}
}