forked from alecthomas/gozmq
/
zmq_3_x_hack.go
189 lines (164 loc) · 4.9 KB
/
zmq_3_x_hack.go
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// +build zmq_3_x
package gozmq
/*
#cgo pkg-config: libzmq
#include <zmq.h>
#include <stdlib.h>
#include <string.h>
char *ev_get_addr(zmq_event_t *ev) {
switch (ev->event) {
case ZMQ_EVENT_CONNECTED:
return ev->data.connected.addr;
case ZMQ_EVENT_CONNECT_DELAYED:
return ev->data.connect_delayed.addr;
case ZMQ_EVENT_CONNECT_RETRIED:
return ev->data.connect_retried.addr;
case ZMQ_EVENT_LISTENING:
return ev->data.listening.addr;
case ZMQ_EVENT_BIND_FAILED:
return ev->data.bind_failed.addr;
case ZMQ_EVENT_ACCEPTED:
return ev->data.accepted.addr;
case ZMQ_EVENT_ACCEPT_FAILED:
return ev->data.accept_failed.addr;
case ZMQ_EVENT_CLOSED:
return ev->data.closed.addr;
case ZMQ_EVENT_CLOSE_FAILED:
return ev->data.close_failed.addr;
case ZMQ_EVENT_DISCONNECTED:
return ev->data.disconnected.addr;
case ZMQ_EVENT_PEER_ATTACHED:
return ev->data.peer_attached.addr;
case ZMQ_EVENT_PEER_DETACHED:
return ev->data.peer_detached.addr;
}
}
size_t ev_get_extra(zmq_event_t *ev) {
switch (ev->event) {
case ZMQ_EVENT_CONNECTED:
return ev->data.connected.fd;
case ZMQ_EVENT_CONNECT_DELAYED:
return ev->data.connect_delayed.err;
case ZMQ_EVENT_CONNECT_RETRIED:
return ev->data.connect_retried.interval;
case ZMQ_EVENT_LISTENING:
return ev->data.listening.fd;
case ZMQ_EVENT_BIND_FAILED:
return ev->data.bind_failed.err;
case ZMQ_EVENT_ACCEPTED:
return ev->data.accepted.fd;
case ZMQ_EVENT_ACCEPT_FAILED:
return ev->data.accept_failed.err;
case ZMQ_EVENT_CLOSED:
return ev->data.closed.fd;
case ZMQ_EVENT_CLOSE_FAILED:
return ev->data.close_failed.err;
case ZMQ_EVENT_DISCONNECTED:
return ev->data.disconnected.fd;
case ZMQ_EVENT_PEER_ATTACHED:
return ev->data.peer_attached.id;
case ZMQ_EVENT_PEER_DETACHED:
return ev->data.peer_detached.id;
}
}
*/
import "C"
import (
"unsafe"
"errors"
)
const (
APUB = SocketType(C.ZMQ_APUB)
BLOCK_ADDR = StringSocketOption(C.ZMQ_BLOCK_ADDR)
UNBLOCK_ADDR = StringSocketOption(C.ZMQ_UNBLOCK_ADDR)
APUB_APPROVE = StringSocketOption(C.ZMQ_APUB_APPROVE)
LAST_PEER_ADDR = StringSocketOption(C.ZMQ_LAST_PEER_ADDR)
APUB_REQ = IntSocketOption(C.ZMQ_APUB_REQ)
LAST_PEER_UNIQ_ID = IntSocketOption(C.ZMQ_LAST_PEER_UNIQ_ID)
DISCONNECT_PEER_BY_ID = IntSocketOption(C.ZMQ_DISCONNECT_PEER_BY_ID)
EVENT_PEER_ATTACHED = Event(C.ZMQ_EVENT_PEER_ATTACHED)
EVENT_PEER_DETACHED = Event(C.ZMQ_EVENT_PEER_DETACHED)
)
func (s *Socket) GetSockOptUInt(option IntSocketOption) (value uint32, err error) {
size := C.size_t(unsafe.Sizeof(value))
var rc C.int
if rc, err = C.zmq_getsockopt(s.s, C.int(option), unsafe.Pointer(&value), &size); rc != 0 {
err = casterr(err)
return
}
return
}
func (s *Socket) APubReq() (bool, error) {
value, err := s.GetSockOptInt(APUB_REQ)
return value != 0, err
}
func (s *Socket) DisconnectPeerById(id uint32) error {
if rc, err := C.zmq_setsockopt(s.s, C.int(DISCONNECT_PEER_BY_ID), unsafe.Pointer(nil), C.size_t(id)); rc != 0 {
return casterr(err)
}
return nil
}
func (s *Socket) GetLastPeerUniqueID() (uint32, error) {
return s.GetSockOptUInt(LAST_PEER_UNIQ_ID)
}
func (s *Socket) APubApprove(value string, peerid uint32) error {
v := C.CString(value)
defer C.free(unsafe.Pointer(v))
if rc, err := C.zmq_setsockopt(s.s, C.int(APUB_APPROVE), unsafe.Pointer(v), C.size_t(peerid)); rc != 0 {
return casterr(err)
}
return nil
}
func (s *Socket) BlockAddr(value string) error {
return s.SetSockOptString(BLOCK_ADDR, value)
}
func (s *Socket) UnblockAddr(value string) error {
return s.SetSockOptString(UNBLOCK_ADDR, value)
}
func (s *Socket) DisconnectLastRecvPeer() error {
if rc, err := C.zmq_disconnect_last_recv_peer(s.s); rc != 0 {
return casterr(err)
}
return nil
}
func (s *Socket) BlockLastRecvPeer() error {
if rc, err := C.zmq_block_last_recv_peer(s.s); rc != 0 {
return casterr(err)
}
return nil
}
func (s *Socket) GetLastRecvPeerAddr() (string, error) {
var addr *C.char
if rc, err := C.zmq_last_recv_peer_addr(s.s, &addr); rc != 0 {
return "", casterr(err)
}
defer C.free(unsafe.Pointer(addr))
return C.GoString(addr), nil
}
func (s *Socket) RecvEvent(flags SendRecvOption) (ty Event, addr string, ex int64, err error) {
// Allocate and initialise a new zmq_msg_t
var m C.zmq_msg_t
var rc C.int
if rc, err = C.zmq_msg_init(&m); rc != 0 {
err = casterr(err)
return
}
defer C.zmq_msg_close(&m)
// Receive into message
if rc, err = C.zmq_recvmsg(s.s, &m, C.int(flags)); rc == -1 {
err = casterr(err)
return
}
var ev *C.zmq_event_t
size := C.zmq_msg_size(&m)
if uintptr(size) != unsafe.Sizeof(*ev) {
err = errors.New("Invalid event message received")
return
}
err = nil
ev = (*C.zmq_event_t)(C.zmq_msg_data(&m))
ty = Event(ev.event)
addr = C.GoString(C.ev_get_addr(ev))
ex = int64(C.ev_get_extra(ev))
return
}