module Net

Extended Modules

• Net

Defined in:

net/base.cr
net/parser.cr
net/ip.cr

Constant Summary

BIG = 16777215

Bigger than we need, not too big to worry about overflow

CLASS_A_MASK = Net.ipv4_mask(255, 0, 0, 0)

Default route masks for IPv4

CLASS_B_MASK = Net.ipv4_mask(255, 255, 0, 0)

CLASS_C_MASK = Net.ipv4_mask(255, 255, 255, 0)

IPV4_ALLROUTER = ipv4(224, 0, 0, 2)

all systems

IPV4_ALLSYS = ipv4(224, 0, 0, 1)

limited broadcast

IPV4_BCAST = ipv4(255, 255, 255, 255)

Well-known IPv4 addresses

IPV4_ZERO = ipv4(0, 0, 0, 0)

ALL ROUTERS

IPV4LEN = 4

IP address lenghts in bytes

IPV6_INTERFACE_LOCAL_ALL_NODES = IP[255, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1]

IPV6_LINK_LOCAL_ALL_NODES = IP[255, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1]

IPV6_LINK_LOCAL_ALL_ROUTERS = IP[255, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2]

IPV6_LOOPBACK = IP[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1]

IPV6_UNSPECIFIED = IP[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]

IPV6_ZERO = IP[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]

Well-known IPv6 addresses

IPV6LEN = 16

V4_IN_V6PREFIX = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 255] of Byte

Instance Method Summary

• #all_ff?(b : Bytes)
• #cidr_mask(ones : Int, bits : Int) : IPMask?

  cidr_mask returns an IPMask consisting of `ones' 1 bits followed by 0s up to a total length of `bits' bits.

• #dtoi(s : String)

  decimal to integer, returns number, characters consumed, success

• #ipv4(a : Byte, b : Byte, c : Byte, d : Byte) : IP

  ipv4 returns the IP address (in 16-byte form) of the ipv4 address a.b.c.d.

• #ipv4_mask(a : Byte, b : Byte, c : Byte, d : Byte) : IPMask

  IPv4Mask returns the IP mask (in 4-byte form) of the IPv4 mask a.b.c.d.

• #parse_cidr(s : String)
• #simple_mask_length(mask : IPMask)

  If mask is a sequence of 1 bits followed by 0 bits, returns the number of 1 bits.

• #to_hex(i : UInt32)

  convert i to a hexadecimal string.

• #ubtoa(dst : Bytes, start : Int, v : UInt8)

  ubtoa encodes the string form of the integer v to dst and returns the number of bytes written to dst.

• #uitoa(val : UInt)

  Convert unsigned integer to decimal string.

• #xtoi(s : String)

  Hexadecimal to integer.

• #zeros?(p : IP)

Instance Method Detail