由于套接字失败而导致围困中止

Question

我在尝试从Mac OS X 10.8.3围攻下面的cmd时遇到此问题。

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

从围困输出如下：

** 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

的问题可能是你用尽临时端口。要解决该问题，请扩展要使用的端口数量，或者减少端口保留在TIME_WAIT中的持续时间，或者两者兼而有之。

展开可用端口：

检查您的当前设置：

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

net.inet.ip.portrange.hifirst: 49152

将其设置下可以展开窗口：

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

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

（hilast应该已经处于最高，65536）

降低段最大生存

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

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