func (r *req) receiver(ep mangos.Endpoint) {
rq := r.sock.RecvChannel()
cq := r.sock.CloseChannel()
for {
m := ep.RecvMsg()
if m == nil {
break
}
if len(m.Body) < 4 {
m.Free()
continue
}
m.Header = append(m.Header, m.Body[:4]...)
m.Body = m.Body[4:]
select {
case rq <- m:
case <-cq:
m.Free()
break
}
}
}
func (r *rep) receiver(ep mangos.Endpoint) {
for {
m := ep.RecvMsg()
if m == nil {
return
}
v := ep.GetID()
m.Header = append(m.Header,
byte(v>>24), byte(v>>16), byte(v>>8), byte(v))
// Move backtrace from body to header.
for {
if len(m.Body) < 4 {
m.Free() // ErrGarbled
return
}
m.Header = append(m.Header, m.Body[:4]...)
m.Body = m.Body[4:]
// Check for high order bit set (0x80000000, big endian)
if m.Header[len(m.Header)-4]&0x80 != 0 {
break
}
}
select {
case r.sock.RecvChannel() <- m:
case <-r.sock.CloseChannel():
m.Free()
return
}
}
}
func (s *sub) receiver(ep mangos.Endpoint) {
for {
var matched = false
m := ep.RecvMsg()
if m == nil {
return
}
s.Lock()
for _, sub := range s.subs {
if bytes.HasPrefix(m.Body, sub) {
// Matched, send it up. Best effort.
matched = true
break
}
}
s.Unlock()
if !matched {
m.Free()
continue
}
select {
case s.sock.RecvChannel() <- m:
case <-s.sock.CloseChannel():
m.Free()
return
default: // no room, drop it
m.Free()
}
}
}
func (x *push) receiver(ep mangos.Endpoint) {
// In order for us to detect a dropped connection, we need to poll
// on the socket. We don't care about the results and discard them,
// but this allows the disconnect to be noticed. Note that we will
// be blocked in this call forever, until the connection is dropped.
for {
if m := ep.RecvMsg(); m == nil {
break
}
}
}
func (x *pull) receiver(ep mangos.Endpoint) {
rq := x.sock.RecvChannel()
cq := x.sock.CloseChannel()
for {
m := ep.RecvMsg()
if m == nil {
return
}
select {
case rq <- m:
case <-cq:
return
}
}
}
func (x *resp) receiver(ep mangos.Endpoint) {
rq := x.sock.RecvChannel()
cq := x.sock.CloseChannel()
for {
m := ep.RecvMsg()
if m == nil {
return
}
v := ep.GetID()
m.Header = append(m.Header,
byte(v>>24), byte(v>>16), byte(v>>8), byte(v))
hops := 0
for {
if hops >= x.ttl {
m.Free() // ErrTooManyHops
continue
}
hops++
if len(m.Body) < 4 {
m.Free()
continue
}
m.Header = append(m.Header, m.Body[:4]...)
m.Body = m.Body[4:]
if m.Header[len(m.Header)-4]&0x80 != 0 {
break
}
}
select {
case rq <- m:
case <-cq:
m.Free()
return
}
}
}
