// 日常的通讯过程
---------- strCommand: ping ----------
---------- strCommand: pong ----------
// 空node, 区块高度是 0
addnode 1.1.1.1:8333 add
---------- strCommand: version ----------
---------- strCommand: verack ----------
---------- strCommand: sendheaders ----------
---------- strCommand: sendcmpct ----------
---------- strCommand: ping ----------
---------- strCommand: getheaders ----------
---------- strCommand: feefilter ----------
---------- strCommand: pong ----------
generate 1
---------- strCommand: inv ----------
---------- strCommand: headers ----------
---------- strCommand: block ----------
参考 :
https://zhuanlan.zhihu.com/p/32267090
https://en.bitcoin.it/wiki/Protocol_documentation#cmpctblock
