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• • MB

MB

<< 其功能把"<<"左边的运算数的各二进位全部左移若干位，由"<<"右边的数指定移动的位数，低位补0。
左移n位就是乘以2的n次方,

1048576 = 1MB

InitialStreamReceiveWindow: 1<<20, // 1 MB
MaxStreamReceiveWindow: 6<<20, // 6 MB
InitialConnectionReceiveWindow: 2<<20, // 2 MB
MaxConnectionReceiveWindow: 12<<20, // 12 MB