服务器提交了协议冲突. Section=ResponseHeader Detail=CR 后面必须是 LF

解决办法：

ToggleAllowUnsafeHeaderParsing(true);

public static bool ToggleAllowUnsafeHeaderParsing(bool enable)
        {
            Assembly assembly = Assembly.GetAssembly(typeof(SettingsSection));
            if (assembly != null)
            {
                Type settingsSectionType = assembly.GetType("System.Net.Configuration.SettingsSectionInternal");
                if (settingsSectionType != null)
                {
                    
                    object anInstance = settingsSectionType.InvokeMember("Section",
                    BindingFlags.Static | BindingFlags.GetProperty | BindingFlags.NonPublic, null, null, new object[] { });
                    if (anInstance != null)
                    {
                        FieldInfo aUseUnsafeHeaderParsing = settingsSectionType.GetField("useUnsafeHeaderParsing", BindingFlags.NonPublic | BindingFlags.Instance);
                        if (aUseUnsafeHeaderParsing != null)
                        {
                            aUseUnsafeHeaderParsing.SetValue(anInstance, enable);
                            return true;
                        }

                    }
                }
            }
            return false;
        }