由于套接字故障过多，围城已中止

Question

我在Mac OS X 10.8.3上尝试运行以下命令时遇到了这个问题。

siege -d1 -c 20 -t2m -i -f -r10 urls.txt

围攻的输出如下所示：

** SIEGE 2.74
** Preparing 20 concurrent users for battle.
The server is now under siege...
done.
siege aborted due to excessive socket failure; you
can change the failure threshold in $HOME/.siegerc

Transactions:                  0 hits
Availability:               0.00 %
Elapsed time:              27.04 secs
Data transferred:           0.00 MB
Response time:              0.00 secs
Transaction rate:           0.00 trans/sec
Throughput:             0.00 MB/sec
Concurrency:                0.00
Successful transactions:           0
Failed transactions:            1043
Longest transaction:            0.00
Shortest transaction:           0.00

FILE: /usr/local/var/siege.log
You can disable this annoying message by editing
the .siegerc file in your home directory; change
the directive 'show-logfile' to false.

Answer 1

问题可能是您的临时端口用完了。要解决这个问题，要么增加要使用的端口数量，要么减少端口在TIME_WAIT中停留的时间，或者两者兼而有之。

扩展可用端口：

检查您的当前设置：

$ sudo sysctl net.inet.ip.portrange.hifirst

net.inet.ip.portrange.hifirst: 49152

将其设置得更低以展开窗口：

$ sudo sysctl -w net.inet.ip.portrange.hifirst=32768

net.inet.ip.portrange.hifirst: 49152 -> 32768

(hilast应该已经达到最大值，65536)

降低最大数据段生存期

$ sudo sysctl -w net.inet.tcp.msl=1000

net.inet.tcp.msl: 15000 -> 1000