tcping这个软件是针对TCP监控的，也可以看到ping 值，即使机房禁PING，服务器禁PING了，也可以通过它来监控服务器的情况。除了ping ，它还有一个功能，监听端口的状态。请在附件中获取tcping工具。
tcping www.baidu.com tcping -t www.baidu.com 【参数-t 是让命令一直运行ping 】
tcping -d -t www.baidu.com 【参数 -d 是显示时间，这样就可以更清楚了】
tcping -d -t www.baidu.com 21 【这里只是举例，21是您所需要监听的端口，这个可以行定义。】
tcping - simulate "ping" over tcp by establishing a connection to network hosts.
Measures the time for your system to [SYN], receive the target's [SYN][ACK] and send [ACK]. Note that the travel time for
the last ACK is not included - only the time it takes to be put on the wire a tthe sending end.
tcping [-tdsvf46] [-i interval] [-n times] [-w interval] [-b n] [-r times][-j depth] [--tee filename] [-f] destination [port]
tcping measures the time it takes to perform a TCP 3-way handshake (SYN, SYN/ACK, ACK) between itself and a remote host.
The travel time of the outgoing final ACK is not included, only the (minimal) amount of time it has taken to drop it on
the wire at the near end. This allows the travel time of the (SYN, SYN/ACK) to approximate the travel time of the
ICMP (request, response) equivalent.
-4 Prefer using IPv4
-6 Prefer using IPv6
-t ping continuously until stopped via control-c
-n count send _count_ pings and then stop. Default 4.
Wait _interval_ seconds between pings. Default 1. Decimals permitted.
Wait _interval_ seconds for a response. Default 2. Decimals permitted.
-d include date and time on every output line
-f Force sending at least one byte in addition to making the connection.
Enable audible beeps.
'-b 1' will beep "on down". If a host was up, but now its not, beep.
'-b 2' will beep "on up". If a host was down, but now its up, beep.
'-b 3' will beep "on change". If a host was one way, but now its the other, beep.
'-b 4' will beep "always".
Every _count_ pings, we will perform a new DNS lookup for the host in case it changed.
-s Exit immediately upon a success.
-v Print version and exit.
Calculate jitter. Jitter is defined as the difference between the last response time and the historical average.
If _depth_ is specified tcping will use the prior _depth_ values to calculate a rolling average.
If _depth_ is not
specified tcping will use the overall average.
Duplicate output to the _filename_ specified. Windows can still not be depended upon to have a useful command line
environment. Don't tease me, *nix guys.
A DNS name, an IP address, or (in "http" mode) a URL.
Do not specify the protocol ("http://") in "http" mode. Also do not specify server port via ":port" syntax.
For instance: "tcping http://www.elifulkerson.com:8080/index.html" would fail
Use the style: "tcping www.elifulkerson.com/index.html 8080" instead.
A numeric TCP port, 1-65535. If not specified, defaults to 80.
HTTP MODE OPTIONS
-h Use "http" mode. In http mode we will attempt to GET the specified document and return additional values including
the document's size, http response code, kbit/s.
-u In "http" mode, include the target URL on each output line.
--post Use POST instead of GET in http mode.
--head Use HEAD instead of GET in http mode.
--get Shorthand to invoke "http" mode for consistency's sake.
Connect to _proxyserver_ to request the url rather than the server indicated in the url itself.
Specify the numeric TCP port of the proxy server. Defaults to 3128.
tcping returns 0 if all pings are successful, 1 if zero pings are successful and 2 for mixed outcome.
Please report bugs and feature requests to the author via contact information on http://www.elifulkerson.com
tcping is available at http://www.elifulkerson.com/projects/tcping.php
Probing 126.96.36.199:80/tcp - Port is open - time=23.285ms
Probing 188.8.131.52:80/tcp - Port is open - time=21.651ms
Probing 184.108.40.206:80/tcp - Port is open - time=21.899ms
Probing 220.127.116.11:80/tcp - Port is open - time=21.789ms
Ping statistics for 18.104.22.168:80
4 probes sent.
4 successful, 0 failed.
Approximate trip times in milli-seconds:
Minimum = 21.651ms, Maximum = 23.285ms, Average = 22.156ms
D:\tcping-devel>tcping -h www.elifulkerson.com
** Requesting "" from www.elifulkerson.com
(for various reasons, kbit/s is an approximation)
Probing 22.214.171.124:80/tcp - HTTP is open - time=31.288ms rcv_time=31.951 status=200 bytes=4052 kbit/s=~1014.554
Probing 126.96.36.199:80/tcp - HTTP is open - time=29.553ms rcv_time=30.947 status=200 bytes=4052 kbit/s=~1047.479
Probing 188.8.131.52:80/tcp - HTTP is open - time=29.871ms rcv_time=31.727 status=200 bytes=4052 kbit/s=~1021.728
Probing 184.108.40.206:80/tcp - HTTP is open - time=29.976ms rcv_time=36.002 status=200 bytes=4052 kbit/s=~900.393
Ping statistics for 220.127.116.11:80
4 probes sent.
4 successful, 0 failed.
Approximate trip times in milli-seconds: Minimum = 29.553ms, Maximum = 31.288ms, Average = 30.172ms