From 3c79ef183573c2a3f031a209fa0ca9843ff76110 Mon Sep 17 00:00:00 2001 From: Determinant Date: Mon, 17 Jun 2019 14:20:03 -0400 Subject: add doc to netaddr.go --- netaddr.go | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/netaddr.go b/netaddr.go index 4bd7ebb..09d9c8b 100644 --- a/netaddr.go +++ b/netaddr.go @@ -5,10 +5,17 @@ package salticidae import "C" import "runtime" +// The C pointer type for a NetAddr object type CNetAddr = *C.netaddr_t type netAddr struct { inner CNetAddr } +// Network address object. type NetAddr = *netAddr +// Convert an existing C pointer into a go object. Notice that when the go +// object does *not* own the resource of the C pointer, so it is only valid to +// the extent in which the given C pointer is valid. The C memory will not be +// deallocated when the go object is finalized by GC. This applies to all other +// "FromC" functions. func NetAddrFromC(ptr CNetAddr) NetAddr { return &netAddr{ inner: ptr } } @@ -17,8 +24,10 @@ type netAddrArray struct { inner *C.netaddr_array_t } +// An array of network address. type NetAddrArray = *netAddrArray +// Create NetAddr from a TCP socket format string (e.g. 127.0.0.1:8888). func NewAddrFromIPPortString(addr string) (res NetAddr) { c_str := C.CString(addr) res = &netAddr{ inner: C.netaddr_new_from_sipport(c_str) } @@ -27,6 +36,7 @@ func NewAddrFromIPPortString(addr string) (res NetAddr) { return } +// Convert a Go slice of net addresses to NetAddrArray. func NewAddrArrayFromAddrs(arr []NetAddr) (res NetAddrArray) { size := len(arr) if size > 0 { @@ -43,14 +53,21 @@ func NewAddrArrayFromAddrs(arr []NetAddr) (res NetAddrArray) { func (self NetAddr) free() { C.netaddr_free(self.inner) } +// Check if two addresses are the same. func (self NetAddr) IsEq(other NetAddr) bool { return bool(C.netaddr_is_eq(self.inner, other.inner)) } func (self NetAddr) IsNull() bool { return bool(C.netaddr_is_null(self.inner)) } +// Get the 32-bit IP representation. func (self NetAddr) GetIP() uint32 { return uint32(C.netaddr_get_ip(self.inner)) } +// Get the 16-bit port number (in UNIX network byte order, so need to apply +// ntohs(), for example, to convert the returned integer to the local endianness). func (self NetAddr) GetPort() uint16 { return uint16(C.netaddr_get_port(self.inner)) } +// Make a copy of the object. This is required if you want to keep the NetAddr +// returned (or passed as a callback parameter) by other salticidae objects +// (such like MsgNetwork/PeerNetwork). func (self NetAddr) Copy() NetAddr { res := &netAddr{ inner: C.netaddr_copy(self.inner) } runtime.SetFinalizer(res, func(self NetAddr) { self.free() }) -- cgit v1.2.3-70-g09d2