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README.md
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README.md
@ -80,7 +80,7 @@ To run stably,pay attention to MTU.
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### Full Options
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```
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UDPspeeder V2
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git version:f479ca2779 build date:Oct 19 2017 01:37:08
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git version:8e7a8aed92 build date:Oct 25 2017 02:00:54
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repository: https://github.com/wangyu-/UDPspeeder
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usage:
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@ -91,13 +91,13 @@ common option,must be same on both sides:
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-k,--key <string> key for simple xor encryption. if not set,xor is disabled
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main options:
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-f,--fec x:y forward error correction,send y redundant packets for every x packets
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--timeout <number> how long could a packet be held in queue before doing fec,unit: ms
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--mode <number> fec-mode,available values: 0,1 ; 0 cost less bandwidth,1 cost less latency
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--timeout <number> how long could a packet be held in queue before doing fec,unit: ms,default :8ms
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--mode <number> fec-mode,available values: 0,1 ; 0 cost less bandwidth,1 cost less latency(default)
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--report <number> turn on send/recv report,and set a period for reporting,unit:s
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advanced options:
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--mtu <number> mtu. for mode 0,the program will split packet to segment smaller than mtu_value.
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for mode 1,no packet will be split,the program just check if the mtu is exceed.
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default value:1250
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default value:1250
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-j,--jitter <number> simulated jitter.randomly delay first packet for 0~<number> ms,default value:0.
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do not use if you dont know what it means.
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-i,--interval <number> scatter each fec group to a interval of <number> ms,to protect burst packet loss.
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@ -105,6 +105,9 @@ advanced options:
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--random-drop <number> simulate packet loss ,unit:0.01%. default value: 0
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--disable-obscure <number> disable obscure,to save a bit bandwidth and cpu
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developer options:
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--fifo <string> use a fifo(named pipe) for sending commands to the running program,so that you
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can change fec encode parameters dynamically,check readme.md in repository for
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supported commands.
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-j ,--jitter jmin:jmax similiar to -j above,but create jitter randomly between jmin and jmax
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-i,--interval imin:imax similiar to -i above,but scatter randomly between imin and imax
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-q,--queue-len <number> max fec queue len,only for mode 0
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@ -114,11 +117,21 @@ developer options:
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--disable-fec <number> completely disable fec,turn the program into a normal udp tunnel
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--sock-buf <number> buf size for socket,>=10 and <=10240,unit:kbyte,default:1024
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log and help options:
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--log-level <number> 0:never 1:fatal 2:error 3:warn
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--log-level <number> 0:never 1:fatal 2:error 3:warn
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4:info (default) 5:debug 6:trace
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--log-position enable file name,function name,line number in log
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--disable-color disable log color
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-h,--help print this help message
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```
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#### `--fifo` option
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Use a fifo(named pipe) for sending commands to the running program. For example `--fifo fifo.file`,you can use following commands to change parameters dynamically:
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```
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echo fec 19:9 >fifo.file
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echo mtu 1100 >fifo.file
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echo timeout 5 >fifo.file
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echo queue-len 100 >fifo.file
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echo mode 0 >fifo.file
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```
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### Speed-Up any traffic with OpenVPN+UDPspeeder
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@ -80,7 +80,7 @@ https://github.com/wangyu-/UDPspeeder/releases
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### 命令选项
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```
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UDPspeeder V2
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git version:99f6099e86 build date:Oct 19 2017 13:35:38
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git version:8e7a8aed92 build date:Oct 25 2017 02:00:54
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repository: https://github.com/wangyu-/UDPspeeder
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usage:
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@ -105,6 +105,9 @@ advanced options:
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--random-drop <number> simulate packet loss ,unit:0.01%. default value: 0
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--disable-obscure <number> disable obscure,to save a bit bandwidth and cpu
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developer options:
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--fifo <string> use a fifo(named pipe) for sending commands to the running program,so that you
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can change fec encode parameters dynamically,check readme.md in repository for
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supported commands.
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-j ,--jitter jmin:jmax similiar to -j above,but create jitter randomly between jmin and jmax
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-i,--interval imin:imax similiar to -i above,but scatter randomly between imin and imax
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-q,--queue-len <number> max fec queue len,only for mode 0
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@ -158,6 +161,16 @@ UDPspeeder默认情况下会对每个发出的数据包随机填充和异或一
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##### `-q,--queue-len`
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编码器在做FEC前最多积攒多少个数据包，只对mode 0有效。除非是使用下文`V2版如何多倍发包`里面提到的用法，不建议改动。
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#### `--fifo` option
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用fifo(命名管道)向运行中的程序发送command. 例如`--fifo fifo.file`,可用的command有：
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```
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echo fec 19:9 >fifo.file
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echo mtu 1100 >fifo.file
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echo timeout 5 >fifo.file
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echo queue-len 100 >fifo.file
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echo mode 0 >fifo.file
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```
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可以动态改变fec编码器参数。
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# 使用经验
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@ -202,6 +215,10 @@ FEC算法很吃CPU,初次使用建议关注UDPspeeder的CPU占用。如果CPU被
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另外，fec分组大小不宜过大，否则不但很耗CPU,还有其他副作用，建议x+y<50。
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### 改变FEC参数而不断线
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`--fifo`选项可以在运行时无缝改变FEC参数，无需重启程序，也不会断线。
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### 为什么使用之后效果反而变差了？
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有可能是你用了mode 0参数，而又没调好参数。
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@ -221,7 +238,7 @@ UDPspeeder和Kcptun配合,UDPspeeder和Kcptun可以并联也可以串联。
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并联的情况下，让kcptun负责加速TCP,UDPspeeder负责加速UDP。见下文的`UDPspeeder + kcptun + $*** 同时加速tcp和udp流量`。
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串联的情况。UDPspeeder的FEC跟Kcptun自带的相比：可以对两个方向设置不通的FEC参数、有一个更省流量的mode 0模式、可以调整的FEC参数多一些；但是UDPspeeder本身不优化拥塞和重传算法。所以UDPspeeder和Kcptun也可以配合使用，结合两者的优点。
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串联的情况。UDPspeeder的FEC跟Kcptun自带的相比：可以对两个方向设置不同的FEC参数、有一个更省流量的mode 0模式、可以动态改变FEC参数；但是UDPspeeder本身不优化拥塞和重传算法。所以UDPspeeder和Kcptun也可以配合使用，结合两者的优点。
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串联时可以关掉Kcptun的FEC,让UDPspeeder接管FEC功能。这样UDPspeeder工作在UDP层负责降低丢包率，Kcptun工作在应用层用kcp算法负责优化拥塞和重传，能起到和`UDPspeeder+BBR/锐速`类似的效果。
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