安装

  1. yum install iperf

iperf 架构

iperf 分为客户端和服务端. 服务端开启后, 就可以进行通信了.

应用

带宽测试

带宽测试通常采用UDP模式，因为能测出极限带宽、时延抖动、丢包率。在进行测试时，首先以链路理论带宽作为数据发送速率进行测试，例如，从客户端到服务器之间的链路的理论带宽为100Mbps，先用-b 100M进行测试，然后根据测试结果（包括实际带宽，时延抖动和丢包率），再以实际带宽作为数据发送速率进行测试，会发现时延抖动和丢包率比第一次好很多，重复测试几次，就能得出稳定的实际带宽。

UDP模式

服务器端：

  1. // -u udp 模式
  2. // -s 开启服务端
  3. iperf -u -s

输出:

  1. [  4] local 127.0.0.1 port 5001 connected with 127.0.0.1 port 59773
  2. [  4]  0.0-20.0 sec  2.50 MBytes  1.05 Mbits/sec   0.002 ms    0/ 1784 (0%)

客户端：
在udp模式下，以100Mbps为数据发送速率，客户端到服务器192.168.1.1上传带宽测试，测试时间为60秒。

  1. iperf -u -c 192.168.1.1 -b 100M -t 60

iperf -u -c 192.168.1.1 -b 5M -P 30 -t 60
客户端同时向服务器端发起30个连接线程，以5Mbps为数据发送速率。

iperf -u -c 192.168.1.1 -b 100M -d -t 60
以100M为数据发送速率，进行上下行带宽测试。

输出:

  1. # iperf -u -c 127.0.0.1 -b 1M -t 20
  2. ------------------------------------------------------------
  3. Client connecting to 127.0.0.1, UDP port 5001
  4. Sending 1470 byte datagrams, IPG target: 11215.21 us (kalman adjust)
  5. UDP buffer size:  208 KByte (default)
  6. ------------------------------------------------------------
  7. [  3] local 127.0.0.1 port 59773 connected with 127.0.0.1 port 5001
  8. [ ID] Interval       Transfer     Bandwidth
  9. [  3]  0.0-20.0 sec  2.50 MBytes  1.05 Mbits/sec
  10. [  3] Sent 1784 datagrams
  11. [  3] Server Report:
  12. [  3]  0.0-20.0 sec  2.50 MBytes  1.05 Mbits/sec   0.002 ms    0/ 1784 (0%)

**

TCP模式

服务器端：
iperf -s
客户端：
iperf -c 192.168.1.1 -t 60
在tcp模式下，客户端到服务器192.168.1.1上传带宽测试，测试时间为60秒。
iperf -c 192.168.1.1 -P 30 -t 60
客户端同时向服务器端发起30个连接线程。
iperf -c 192.168.1.1 -d -t 60
进行上下行带宽测试。

linux iperf 网络性能测试

iperf可以测试TCP和UDP带宽质量。iperf可以测量最大TCP带宽，具有多种参数和UDP特性。iperf可以报告带宽，延迟抖动和数据包丢失。
TCP（Transimission Control Protocol ，传输控制协议）是基于连接的协议，也就是说，在正式收发数据前，必须和对方建立可靠的连接，一个TCP
连接必须要经过三次的“对话”才能建立起来
UDP（User Data Protocol,用户数据报协议）是与TCP相对应的协议。他是面向非连接的协议。它不与对方建立连接，而是直接就把数据包发送过去。
udp模式
服务器端：
iperf -u -s
客户端：
iperf -u -c 192.168.1.1 -b 100M -t 60
在udp模式下，以100Mbps为数据发送速率，客户端到服务器192.168.1.1上传带宽测试，测试时间为60秒
iperf -u -c 192.168.1.1 -b 5M -P 30 -t 60
客户端同时向服务器端发起30个连接线程，已5Mbps为数据发送速率
TCP模式
服务端：
iperf -s
客户端：
iperf -c 192.168.1.1 -t 60
在tcp 模式下，客户端到服务器192.168.1.1上传带宽测试，测试时间为60秒
iperf -c 192.168.1.1 -d -t 60
进行上下行带宽测试
服务器端：
iperf -s -p 12345 -i 1 -M 以在本机端口12345上启用iperf

  1. 1. iperf: option requires an argument -- M
  2. 2. ------------------------------------------------------------
  3. 3. Server listening on TCP port 12345
  4. 4. TCP window size: 85.3 KByte (default)
  5. 5. ------------------------------------------------------------

在客户端，输入命令：
iperf -c 192.167.xxx.xxx -p 12345 -i 1 -t 10 -w 20K 其中参数说明如下
-c 客户端模式，后接服务器ip，
-p 后接服务端监听的端口
-i 设置带宽报告的时间间隔，单位为秒
-t 设置测试的时长，单位为秒
-w 设置tcp窗口大小，一般可以不用设置，默认即可
客户端测试后结果如下：

  1. 1. Last login: Thu May 29 21:58:49 2104 from 192.167.253.95
  2. 2. -bash-4.1# iperf -c 192.167.xxx.xxx -p 12345 -i 1 -t 10 -w 20K
  3. 3. ------------------------------------------------------------
  4. 4. Client connecting to 192.167.xxx.xxx, TCP port 12345
  5. 5. TCP window size: 40.0 KByte (WARNING: requested 20.0 KByte)
  6. 6. ------------------------------------------------------------
  7. 7. [  3] local 192.167.xxx.xxx port 39803 connected with 192.167.xxx.xxx port 12345
  8. 8. [  3]  0.0- 1.0 sec  89.2 MBytes    749 Mbits/sec
  9. 9. [  3]  1.0- 2.0 sec  91.5 MBytes    768 Mbits/sec
  10. 10. [  3]  2.0- 3.0 sec  89.1 MBytes    748 Mbits/sec
  11. 11. [  3]  3.0- 4.0 sec  89.8 MBytes    754 Mbits/sec
  12. 12. [  3]  4.0- 5.0 sec  89.0 MBytes    746 Mbits/sec
  13. 13. [  3]  5.0- 6.0 sec  91.4 MBytes    767 Mbits/sec
  14. 14. [  3]  6.0- 7.0 sec  89.0 MBytes    746 Mbits/sec
  15. 15. [  3]  7.0- 8.0 sec  90.6 MBytes    760 Mbits/sec
  16. 16. [  3]  8.0- 9.0 sec  89.7 MBytes    753 Mbits/sec
  17. 17. [  3]  0.0-10.0 sec    899 MBytes    754 Mbits/sec

服务器端结果：

  1. 1. wxsc@ubuntu:~$ iperf -s -p 12345 -i 1 -M
  2. 2. iperf: option requires an argument -- M
  3. 3. ------------------------------------------------------------
  4. 4. Server listening on TCP port 12345
  5. 5. TCP window size: 85.3 KByte (default)
  6. 6. ------------------------------------------------------------
  7. 7. [  4] local 192.167.xxx.xxx port 12345 connected with 192.167.xxx.xxx port 39803
  8. 8. [  4]  0.0- 1.0 sec  89.2 MBytes    748 Mbits/sec
  9. 9. [  4]  1.0- 2.0 sec  91.5 MBytes    768 Mbits/sec
  10. 10. [  4]  2.0- 3.0 sec  89.2 MBytes    748 Mbits/sec
  11. 11. [  4]  3.0- 4.0 sec  89.8 MBytes    753 Mbits/sec
  12. 12. [  4]  4.0- 5.0 sec  88.9 MBytes    746 Mbits/sec
  13. 13. [  4]  5.0- 6.0 sec  91.4 MBytes    767 Mbits/sec
  14. 14. [  4]  6.0- 7.0 sec  88.9 MBytes    746 Mbits/sec
  15. 15. [  4]  7.0- 8.0 sec  90.6 MBytes    760 Mbits/sec
  16. 16. [  4]  8.0- 9.0 sec  89.8 MBytes    753 Mbits/sec
  17. 17. [  4]  9.0-10.0 sec  89.6 MBytes    752 Mbits/sec
  18. 18. [  4]  0.0-10.0 sec    899 MBytes    754 Mbits/sec


其中：Interval 表示时间间隔，Transfer表示时间间隔里面传输的数据量，Bandwidth是时间间隔里的传输速率，最后一行是本次测试的统计，测试可知带宽平均在89.9Mbit/s
1测试多线程TCP
在客户端添加-P 参数即可测试多线程的TCP性能，如下为使用两个线程的测试情况

  1. 1. -bash-4.1# iperf -c 192.167.xxx.xxx -p12345 -i 1 -t 3 -P 2
  2. 2. ------------------------------------------------------------
  3. 3. Client connecting to 192.167.xxx.xxx, TCP port 12345
  4. 4. TCP window size: 48.6 KByte (default)
  5. 5. ------------------------------------------------------------
  6. 6. [  3] local 192.167.xxx.xxx port 39805 connected with 192.167.xxx.xxx port 12345
  7. 7. [  4] local 192.167.xxx.xxx port 39806 connected with 192.167.xxx.xxx port 12345
  8. 8. [  3]  0.0- 1.0 sec  56.0 MBytes    470 Mbits/sec
  9. 9. [  4]  0.0- 1.0 sec  56.2 MBytes    472 Mbits/sec
  10. 10. [SUM]  0.0- 1.0 sec    112 MBytes    942 Mbits/sec
  11. 11. [  3]  1.0- 2.0 sec  55.7 MBytes    467 Mbits/sec
  12. 12. [  4]  1.0- 2.0 sec  55.7 MBytes    467 Mbits/sec
  13. 13. [SUM]  1.0- 2.0 sec    111 MBytes    934 Mbits/sec
  14. 14. [  3]  2.0- 3.0 sec  55.1 MBytes    462 Mbits/sec
  15. 15. [  3]  0.0- 3.0 sec    167 MBytes    466 Mbits/sec
  16. 16. [  4]  2.0- 3.0 sec  56.1 MBytes    471 Mbits/sec
  17. 17. [SUM]  2.0- 3.0 sec    111 MBytes    933 Mbits/sec
  18. 18. [  4]  0.0- 3.0 sec    168 MBytes    469 Mbits/sec
  19. 19. [SUM]  0.0- 3.0 sec    335 MBytes    935 Mbits/sec

服务器端输出：

  1. 1. [  4] local 192.167.xxx.xxx port 12345 connected with 192.167.xxx.xxx port 39805
  2. 2. [  5] local 192.167.xxx.xxx port 12345 connected with 192.167.xxx.xxx port 39806
  3. 3. [  4]  0.0- 1.0 sec  55.5 MBytes    465 Mbits/sec
  4. 4. [  5]  0.0- 1.0 sec  55.4 MBytes    465 Mbits/sec
  5. 5. [SUM]  0.0- 1.0 sec    111 MBytes    930 Mbits/sec
  6. 6. [  4]  1.0- 2.0 sec  55.7 MBytes    467 Mbits/sec
  7. 7. [  5]  1.0- 2.0 sec  55.7 MBytes    468 Mbits/sec
  8. 8. [SUM]  1.0- 2.0 sec    111 MBytes    935 Mbits/sec
  9. 9. [  4]  2.0- 3.0 sec  55.1 MBytes    462 Mbits/sec
  10. 10. [  5]  2.0- 3.0 sec  56.1 MBytes    470 Mbits/sec
  11. 11. [SUM]  2.0- 3.0 sec    111 MBytes    932 Mbits/sec
  12. 12. [  4]  0.0- 3.0 sec    167 MBytes    465 Mbits/sec
  13. 13. [  5]  0.0- 3.0 sec    168 MBytes    468 Mbits/sec
  14. 14. [SUM]  0.0- 3.0 sec    335 MBytes    932 Mbits/sec

2测试单线程UDP（默认带宽）
在服务器端运行iperf,输入命令iperf –s -u –p 12345 –i 1 以在本机端口12345上启用iperf,并运行与udp模式
在客户端运行iperf,输入命令iperf -c server-ip -p server-port -i 1 -t 10 -b 其中参数说明如下：
-b :设置udp 的发送带宽，单位bit/s
客户端输出：

  1. 1. -bash-4.1# iperf -c 192.167.xxx.xxx -p12345 -i 1 -t 10 -u -b
  2. 2. iperf: option requires an argument -- b
  3. 3. ------------------------------------------------------------
  4. 4. Client connecting to 192.167.xxx.xxx, UDP port 12345
  5. 5. Sending 1470 byte datagrams
  6. 6. UDP buffer size:   224 KByte (default)
  7. 7. ------------------------------------------------------------
  8. 8. [  3] local 192.167.xxx.xxx port 36125 connected with 192.167.xxx.xxx port 12345
  9. 9. [  3]  0.0- 1.0 sec    129 KBytes  1.06 Mbits/sec
  10. 10. [  3]  1.0- 2.0 sec    128 KBytes  1.05 Mbits/sec
  11. 11. [  3]  2.0- 3.0 sec    128 KBytes  1.05 Mbits/sec
  12. 12. [  3]  3.0- 4.0 sec    128 KBytes  1.05 Mbits/sec
  13. 13. [  3]  4.0- 5.0 sec    128 KBytes  1.05 Mbits/sec
  14. 14. [  3]  5.0- 6.0 sec    128 KBytes  1.05 Mbits/sec
  15. 15. [  3]  6.0- 7.0 sec    129 KBytes  1.06 Mbits/sec
  16. 16. [  3]  7.0- 8.0 sec    128 KBytes  1.05 Mbits/sec
  17. 17. [  3]  8.0- 9.0 sec    128 KBytes  1.05 Mbits/sec
  18. 18. [  3]  9.0-10.0 sec    128 KBytes  1.05 Mbits/sec
  19. 19. [  3]  0.0-10.0 sec  1.25 MBytes  1.05 Mbits/sec
  20. 20. [  3] Sent 893 datagrams
  21. 21. [  3] Server Report:
  22. 22. [  3]  0.0-10.0 sec  1.25 MBytes  1.05 Mbits/sec  0.009 ms    0/  893 (0%)

服务器端输出：

  1. 1. wxsc@ubuntu:~$ iperf -s -p12345 -m -i 1 -u
  2. 2. ------------------------------------------------------------
  3. 3. Server listening on UDP port 12345
  4. 4. Receiving 1470 byte datagrams
  5. 5. UDP buffer size:   208 KByte (default)
  6. 6. ------------------------------------------------------------
  7. 7. [  3] local 192.167.xxx.xxx port 12345 connected with 192.167.xxx.xxx port 36125
  8. 8. [  3]  0.0- 1.0 sec    128 KBytes  1.05 Mbits/sec  0.016 ms    0/   89 (0%)
  9. 9. [  3]  1.0- 2.0 sec    128 KBytes  1.05 Mbits/sec  0.219 ms    0/   89 (0%)
  10. 10. [  3]  2.0- 3.0 sec    128 KBytes  1.05 Mbits/sec  0.016 ms    0/   89 (0%)
  11. 11. [  3]  3.0- 4.0 sec    128 KBytes  1.05 Mbits/sec  0.018 ms    0/   89 (0%)
  12. 12. [  3]  4.0- 5.0 sec    128 KBytes  1.05 Mbits/sec  0.021 ms    0/   89 (0%)
  13. 13. [  3]  5.0- 6.0 sec    129 KBytes  1.06 Mbits/sec  0.451 ms    0/   90 (0%)
  14. 14. [  3]  6.0- 7.0 sec    128 KBytes  1.05 Mbits/sec  0.013 ms    0/   89 (0%)
  15. 15. [  3]  7.0- 8.0 sec    128 KBytes  1.05 Mbits/sec  0.020 ms    0/   89 (0%)
  16. 16. [  3]  8.0- 9.0 sec    128 KBytes  1.05 Mbits/sec  0.011 ms    0/   89 (0%)
  17. 17. [  3]  9.0-10.0 sec    128 KBytes  1.05 Mbits/sec  0.008 ms    0/   89 (0%)
  18. 18. [  3]  0.0-10.0 sec  1.25 MBytes  1.05 Mbits/sec  0.009 ms    0/  893 (0%)

iperf: 网络性能测试工具 - 图1
其中Jitter为抖动，lost/total为丢包数量，Datagrams 为包数量
测试单线程UDP（带宽为10Mbit/s）
设置客户端带宽为10M即可，使用参数-b 指定
客户端输出：

  1. 1. -bash-4.1# iperf -c 192.167.xxx.xxx -p12345 -i 1 -t 10 -u -b 10M
  2. 2. ------------------------------------------------------------
  3. 3. Client connecting to 192.167.xxx.xxx, UDP port 12345
  4. 4. Sending 1470 byte datagrams
  5. 5. UDP buffer size:   224 KByte (default)
  6. 6. ------------------------------------------------------------
  7. 7. [  3] local 192.167.xxx.xxx port 57147 connected with 192.167.xxx.xxx port 12345
  8. 8. [  3]  0.0- 1.0 sec  1.19 MBytes  10.0 Mbits/sec
  9. 9. [  3]  1.0- 2.0 sec  1.19 MBytes  10.0 Mbits/sec
  10. 10. [  3]  2.0- 3.0 sec  1.19 MBytes  10.0 Mbits/sec
  11. 11. [  3]  3.0- 4.0 sec  1.19 MBytes  10.0 Mbits/sec
  12. 12. [  3]  4.0- 5.0 sec  1.19 MBytes  10.0 Mbits/sec
  13. 13. [  3]  5.0- 6.0 sec  1.19 MBytes  10.0 Mbits/sec
  14. 14. [  3]  6.0- 7.0 sec  1.19 MBytes  10.0 Mbits/sec
  15. 15. [  3]  7.0- 8.0 sec  1.19 MBytes  10.0 Mbits/sec
  16. 16. [  3]  8.0- 9.0 sec  1.19 MBytes  10.0 Mbits/sec
  17. 17. [  3]  9.0-10.0 sec  1.19 MBytes  10.0 Mbits/sec
  18. 18. [  3]  0.0-10.0 sec  11.9 MBytes  10.0 Mbits/sec
  19. 19. [  3] Sent 8505 datagrams
  20. 20. [  3] Server Report:
  21. 21. [  3]  0.0-10.0 sec  11.9 MBytes  10.0 Mbits/sec  0.007 ms    0/ 8504 (0%)
  22. 22. [  3]  0.0-10.0 sec  1 datagrams received out-of-order

服务器端输出：

  1. 1. 
  2. 2. [  4] local 192.167.xxx.xxx port 12345 connected with 192.167.xxx.xxx port 57147
  3. 3. [  4]  0.0- 1.0 sec  1.19 MBytes  10.0 Mbits/sec  0.026 ms    0/  850 (0%)
  4. 4. [  4]  1.0- 2.0 sec  1.19 MBytes  10.0 Mbits/sec  0.005 ms    0/  851 (0%)
  5. 5. [  4]  2.0- 3.0 sec  1.19 MBytes  10.0 Mbits/sec  0.056 ms    0/  850 (0%)
  6. 6. [  4]  3.0- 4.0 sec  1.19 MBytes  10.0 Mbits/sec  0.006 ms    0/  850 (0%)
  7. 7. [  4]  4.0- 5.0 sec  1.19 MBytes  10.0 Mbits/sec  0.010 ms    0/  850 (0%)
  8. 8. [  4]  5.0- 6.0 sec  1.19 MBytes  10.0 Mbits/sec  0.010 ms    0/  851 (0%)
  9. 9. [  4]  6.0- 7.0 sec  1.19 MBytes  10.0 Mbits/sec  0.048 ms    0/  850 (0%)
  10. 10. [  4]  7.0- 8.0 sec  1.19 MBytes  10.0 Mbits/sec  0.007 ms    0/  850 (0%)
  11. 11. [  4]  8.0- 9.0 sec  1.19 MBytes  10.0 Mbits/sec  0.078 ms    0/  851 (0%)
  12. 12. [  4]  9.0-10.0 sec  1.19 MBytes  10.0 Mbits/sec  0.008 ms    0/  850 (0%)
  13. 13. [  4]  0.0-10.0 sec  11.9 MBytes  10.0 Mbits/sec  0.007 ms    0/ 8504 (0%)
  14. 14. [  4]  0.0-10.0 sec  1 datagrams received out-of-order

测试UDP的双向传输
客户端使用参数-d 以运行双测试模式，客户端会与服务端进行UDP往返测试完。可以使用-L 参数指定本端双测试监听的端口

  1. 1. -bash-4.1# iperf -c 192.167.xxx.xxx -p12345 -i 1 -t 5 -u -b 10M -d -L 30000
  2. 2. ------------------------------------------------------------
  3. 3. Server listening on UDP port 30000
  4. 4. Receiving 1470 byte datagrams
  5. 5. UDP buffer size:   224 KByte (default)
  6. 6. ------------------------------------------------------------
  7. 7. ------------------------------------------------------------
  8. 8. Client connecting to 192.167.xxx.xxx, UDP port 12345
  9. 9. Sending 1470 byte datagrams
  10. 10. UDP buffer size:   224 KByte (default)
  11. 11. ------------------------------------------------------------
  12. 12. [  4] local 192.167.xxx.xxx port 45123 connected with 192.167.xxx.xxx port 12345
  13. 13. [  3] local 192.167.xxx.xxx port 30000 connected with 192.167.xxx.xxx port 38182
  14. 14. [  4]  0.0- 1.0 sec  1.19 MBytes  10.0 Mbits/sec
  15. 15. [  3]  0.0- 1.0 sec  1.19 MBytes  10.0 Mbits/sec  0.017 ms    0/  850 (0%)
  16. 16. [  4]  1.0- 2.0 sec  1.19 MBytes  10.0 Mbits/sec
  17. 17. [  3]  1.0- 2.0 sec  1.19 MBytes  10.0 Mbits/sec  0.018 ms    0/  851 (0%)
  18. 18. [  4]  2.0- 3.0 sec  1.19 MBytes  10.0 Mbits/sec
  19. 19. [  3]  2.0- 3.0 sec  1.19 MBytes  10.0 Mbits/sec  0.016 ms    0/  850 (0%)
  20. 20. [  4]  3.0- 4.0 sec  1.19 MBytes  10.0 Mbits/sec
  21. 21. [  3]  3.0- 4.0 sec  1.19 MBytes  10.0 Mbits/sec  0.016 ms    0/  850 (0%)
  22. 22. [  4]  4.0- 5.0 sec  1.19 MBytes  10.0 Mbits/sec
  23. 23. [  4]  0.0- 5.0 sec  5.96 MBytes  10.0 Mbits/sec
  24. 24. [  4] Sent 4253 datagrams
  25. 25. [  3]  4.0- 5.0 sec  1.19 MBytes  10.0 Mbits/sec  0.017 ms    0/  851 (0%)
  26. 26. [  3]  0.0- 5.0 sec  5.96 MBytes  10.0 Mbits/sec  0.016 ms    0/ 4253 (0%)
  27. 27. [  4] Server Report:
  28. 28. [  4]  0.0- 5.0 sec  5.96 MBytes  10.0 Mbits/sec  0.002 ms    0/ 4252 (0%)
  29. 29. [  4]  0.0- 5.0 sec  1 datagrams received out-of-order

服务端输出：

  1. 1. ------------------------------------------------------------
  2. 2. Client connecting to 192.167.xxx.xxx, UDP port 30000
  3. 3. Sending 1470 byte datagrams
  4. 4. UDP buffer size:   208 KByte (default)
  5. 5. ------------------------------------------------------------
  6. 6. [  5] local 192.167.xxx.xxx port 38182 connected with 192.167.xxx.xxx port 30000
  7. 7. [  3] local 192.167.xxx.xxx port 12345 connected with 192.167.xxx.xxx port 45123
  8. 8. [  5]  0.0- 1.0 sec  1.19 MBytes  10.0 Mbits/sec
  9. 9. [  3]  0.0- 1.0 sec  1.20 MBytes  10.0 Mbits/sec  0.011 ms    0/  853 (0%)
  10. 10. [  5]  1.0- 2.0 sec  1.19 MBytes  10.0 Mbits/sec
  11. 11. [  3]  1.0- 2.0 sec  1.19 MBytes  10.0 Mbits/sec  0.414 ms    0/  851 (0%)
  12. 12. [  5]  2.0- 3.0 sec  1.19 MBytes  10.0 Mbits/sec
  13. 13. [  3]  2.0- 3.0 sec  1.19 MBytes  10.0 Mbits/sec  0.005 ms    0/  850 (0%)
  14. 14. [  5]  3.0- 4.0 sec  1.19 MBytes  10.0 Mbits/sec
  15. 15. [  3]  3.0- 4.0 sec  1.19 MBytes  10.0 Mbits/sec  0.713 ms    0/  850 (0%)
  16. 16. [  5]  4.0- 5.0 sec  1.19 MBytes  10.0 Mbits/sec
  17. 17. [  3]  0.0- 5.0 sec  5.96 MBytes  10.0 Mbits/sec  0.003 ms    0/ 4252 (0%)
  18. 18. [  3]  0.0- 5.0 sec  1 datagrams received out-of-order
  19. 19. [  5]  0.0- 5.0 sec  5.96 MBytes  10.0 Mbits/sec
  20. 20. [  5] Sent 4253 datagrams
  21. 21. [  5] Server Report:
  22. 22. [  5]  0.0- 5.0 sec  5.96 MBytes  10.0 Mbits/sec  0.016 ms    0/ 4253 (0%)

遇到问题

1 使用客户端连接服务端时，报错“received an unknown control message”

image.png