error){ip:=net.ParseIP(IPv4Addr)ifip==nil{return0,fmt.Errorf("invalid IP address: %s",IPv4Addr)}ipv4:=ip.To4()ifipv4==nil{return0,fmt.Errorf("not an IPv4 address: %s",IPv4Addr)}returnbinary.BigEndian.Uint32(ipv4),nil}funcmain(){ipStr:="192.168.0.110"ipInt,err:=IPv4ToInt(ipS...
startip, endip uint32 local_offset, local_length uint32 } type prefixIndex struct { start_index, end_index uint32 } type ipSearch struct { data []byte prefixMap map[uint32]prefixIndex firstStartIpOffset uint32 prefixStartOffset uint32 prefixEndOffset uint32 prefixCount uint32 } var ips *...
import"fmt"func main() {varauint=60/*60 = 0011 1100*/varbuint=13/*13 = 0000 1101*/varcuint=0c= a & b/*12 = 0000 1100*/fmt.Printf("第一行 - c 的值为 %d\n", c) c= a | b/*61 = 0011 1101*/fmt.Printf("第二行 - c 的值为 %d\n", c) c= a ^ b/*49 = 0011...
vlogf("http2: Transport failed to get client conn for %s: %v", addr, err) return nil, err } reused := !atomic.CompareAndSwapUint32(&cc.reused, 0, 1) // 这个是打印traceLog日志的 traceGotConn(req, cc, reused) // 这个方法是最后处理请求或者响应的方法 res, gotErrAfterReqBodyWrite,...
struct { Host string TTL uint32 Type string Data string } func toResource(req request) (dnsmessage.Resource, error) { ... } // POST handler err = JSON.NewDecoder(r.Body).Decode(&req) // transform req to a dnsmessage.Resource r, err := toResource(req) // write r to the store...
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stackLock uint32 goid int64// goroutine的IDwaitsince int64// g被阻塞的大体时间lockedm*m// G被锁定只在这个m上运行} 其中最主要的当然是sched了,保存了goroutine的上下文。goroutine切换的时候不同于线程有OS来负责这部分数据,而是由一个gobuf对象来保存,这样能够更加轻量级,再来看看gobuf的结构: ...
32 33 34 35 36 37 38 packageiphelper import( "strings" "strconv" "bytes" ) funcStringIpToInt(ipstring string) int { ipSegs := strings.Split(ipstring,".") varipInt int = 0 varpos uint = 24 for_, ipSeg :=rangeipSegs {
第二个 探针类似ping 查询,除了 TOS设置为IP_TOS_RELIABILITY,ICMP Code为0(ICMPv4CodeNet),发送 150 字节的数据。 UDP探针 向一个关闭的UDP端口发包,IP协议的ID设置为0x1042,payload为300字节的0x43 如果nmap未找到关闭的UDP端口,将随机取值 closedUDPPort=(get_random_uint()%14781)+30000; ...
_, ip, err := net.ParseCIDR(cidr) return ip.Mask, err } // Converts IP mask to 16 bit unsigned integer. func mtoi(mask net.IPMask) (uint16, error) { var i uint16 buf := bytes.NewReader(mask) err := binary.Read(buf, binary.BigEndian, &i) return i, err } 反对 回复 2021...