static bool tcp_check_do(string host, int port, int timeout)
{
Sock s = Sock.Connect(host, port, timeout, true, true);
try
{
byte[] d = new byte[1];
d[0] = (byte)'a';
int i;
int num = 3;
for (i = 0; i < num; i++)
{
if (s.SendAll(d) == false)
{
return(false);
}
if (i <= (num - 1))
{
ThreadObj.Sleep(300);
}
}
return(true);
}
finally
{
s.Disconnect();
}
}
// 実行スレッド
void pingerThreadProc(object?param)
{
string optionsStr = this.DefaultOptions; // まずデフォルトのオプション文字列を読む
string hostname = TargetHost;
if (hostname._InStri("@"))
{
if (hostname._GetKeyAndValue(out string hostname2, out string tmp, "@"))
{
hostname = hostname2;
// オプション文字列が個別に指定されていた場合は、それを先に付ける。同じ項目について上書きをすることになる、
optionsStr = tmp._NonNull() + "," + optionsStr;
}
}
// オプション文字列のパース
var options = QueryStringList.Parse(optionsStr, splitChar: ',', trimKeyAndValue: true);
// IP アドレスバージョンの決定
AllowedIPVersions allowedIPVersions = AllowedIPVersions.All;
string ipVerStr = options._GetStrFirst("ipver");
if (ipVerStr._InStr("4") && ipVerStr._InStr("6") == false)
{
allowedIPVersions = AllowedIPVersions.IPv4;
}
else if (ipVerStr._InStr("6") && ipVerStr._InStr("4") == false)
{
allowedIPVersions = AllowedIPVersions.IPv6;
}
bool preferV6 = false;
string ipperfer = options._GetStrFirst("ipprefer");
if (ipperfer._InStri("6"))
{
preferV6 = true;
}
IPAddress GetIpAddress(string hostname, AllowedIPVersions allowedIPVersions)
{
var ip = hostname._ToIPAddress(allowedIPVersions, true);
if (ip != null)
{
return(ip);
}
return(this.DnsClient.GetIpAddressAsync(hostname, allowedIPVersions, preferV6, noCache: true)._GetResult());
}
if (TargetPort == 0)
{
// ping の実行
try
{
IPAddress ip = GetIpAddress(hostname, allowedIPVersions);
SendPingReply ret = SendPing.Send(ip, null, Timeout);
lock (lockObj)
{
ok = ret.Ok;
finished = true;
}
}
catch
{
lock (lockObj)
{
ok = false;
finished = true;
}
}
Console.Write(ok ? "+" : "-");
}
else
{
int port = TargetPort;
bool tcp_check = false;
if (port >= 100000)
{
port -= 100000;
tcp_check = true;
}
// TCP Connect の実行
try
{
if (tcp_check == false)
{
IPAddress ip = GetIpAddress(hostname, allowedIPVersions);
Sock s = Sock.Connect(ip.ToString(), port, Timeout, true, true);
try
{
if (TcpSendData)
{
s.SetTimeout(Timeout);
long end_tick = Time.Tick64 + (long)Timeout;
int num_packets = 0;
while (true)
{
if (Time.Tick64 > end_tick)
{
break;
}
if (num_packets >= 16)
{
break;
}
byte[] data = new byte[1];
data[0] = (byte)'a';
if (s.SendAll(data) == false)
{
break;
}
ThreadObj.Sleep(1);
num_packets++;
}
}
s.Disconnect();
}
catch
{
}
}
else
{
IPAddress ip = GetIpAddress(hostname, allowedIPVersions);
if (tcp_check_do(ip.ToString(), port, Timeout) == false)
{
throw new ApplicationException();
}
}
lock (lockObj)
{
ok = true;
finished = true;
}
}
catch
{
lock (lockObj)
{
ok = false;
finished = true;
}
}
Console.Write(ok ? "*" : "-");
}
//EndEvent.Set();
}