static void ChangeMap(Map map)
{
if (MapList == null)
{
MapList = new List <Map>();
}
switch (map.ChangeType)
{
case (int)ChangeMapType.新增:
MapList.Add(map);
break;
case (int)ChangeMapType.修改:
var item = MapList.Find(c => c.id == map.id);
if (item != null)
{
item = map;
}
else
{
MapList.Add(map);
}
break;
case (int)ChangeMapType.除:
MapList.RemoveAll(c => c.id == map.id);
break;
}
HandleLog.WriteLine($"映射{Enum.GetName(typeof(ChangeMapType), map.ChangeType)}成功：{JsonHelper.Instance.Serialize(map)}", false);
HandleLog.WriteLine($"【{map.name}】映射{Enum.GetName(typeof(ChangeMapType), map.ChangeType)}成功：{map.local} --> {map.remote}");
}
/// <summary>
/// 处理请求
/// </summary>
/// <param name="e"></param>
static void HandleRequest(PackageEventArgs <NatPackageInfo> e)
{
Task.Run(() =>
{
try
{
var packJson = JsonHelper.Instance.Deserialize <PackJson>(e.Package.BodyRaw);
var headers = packJson.Headers;
var contentType = headers.ContainsKey("Content-Type") ? headers["Content-Type"] : null;
var data = packJson.Content == null ? "" : Encoding.UTF8.GetString(packJson.Content);
if (!string.IsNullOrEmpty(contentType))
{
var index = contentType.IndexOf(";");
if (index > 0)
{
//去掉; charset=utf-8
contentType = contentType.Substring(0, index);
}
}
var map = MapList.Find(c => c.remote == packJson.Host);
if (map == null)
{
HandleLog.WriteLine($"映射不存在，外网访问地址：{packJson.Host}");
return;
}
var res = HttpHelper.Request(packJson.Method, $"{map.protocol}://{map.local}{packJson.Route}", data, headers: headers, contentType: contentType);
if (res == null)
{
HandleLog.WriteLine("服务器返回NULL");
return;
}
using (res)
{
using var stream = res.Content.ReadAsStreamAsync().Result;
var result = DataHelper.StreamToBytes(stream);
var rawResult = Encoding.UTF8.GetString(result);
StringBuilder resp = new StringBuilder();
resp.Append($"{map.protocol.ToUpper()}/{res.Version} {(int)res.StatusCode} {res.StatusCode.ToString()}\r\n");
foreach (var item in res.Headers)
{
if (item.Key != "Transfer-Encoding")
{
resp.Append($"{item.Key}: {string.Join(";", item.Value)}\r\n");
}
}
foreach (var item in res.Content.Headers)
{
resp.Append($"{item.Key}: {string.Join(";", item.Value)}\r\n");
}
if (packJson.Method.ToUpper() == "OPTIONS")
{
resp.Append("Access-Control-Allow-Credentials: true\r\n");
if (packJson.Headers.ContainsKey("Access-Control-Request-Headers"))
{
resp.Append($"Access-Control-Allow-Headers: {packJson.Headers["Access-Control-Request-Headers"]}\r\n");
}
resp.Append("Access-Control-Allow-Methods: *\r\n");
resp.Append($"Access-Control-Allow-Origin: {packJson.Headers["Origin"]}\r\n");
}
if (!res.Content.Headers.Contains("Content-Length"))
{
resp.Append($"Content-Length: {result.Length}\r\n");
}
resp.Append($"Date: {DateTime.Now}\r\n");
resp.Append("Connection:close\r\n\r\n");
var response = Encoding.UTF8.GetBytes(resp.ToString()).ToList();
response.AddRange(result);
//先gzip压缩 再转为16进制字符串
var body = DataHelper.Compress(response.ToArray());
var pack = new PackJson()
{
Host = packJson.Host,
UserId = packJson.UserId,
Content = body,
ResponseInfo = $"{map.name} {packJson.Method} {packJson.Route} {(int)res.StatusCode} {res.StatusCode.ToString()}"
};
var json = JsonHelper.Instance.Serialize(pack);
var jsonBytes = Encoding.UTF8.GetBytes(json);
//请求头 01 03 长度(4)
var sendBytes = new List <byte>()
{
0x1, 0x3
};
sendBytes.AddRange(BitConverter.GetBytes(jsonBytes.Length).Reverse());
sendBytes.AddRange(jsonBytes);
NatClient.Send(sendBytes.ToArray());
HandleLog.WriteLine(pack.ResponseInfo);
}
}
catch (Exception ex)
{
HandleLog.WriteLine($"处理请求异常：{ex}");
}
});
}