You have to use socket_select before socket_accept, so your code will wait for connection with select. socket_select can be interrupted by signals easily. Below is an example from my library (methods of class TNetSocket):
//-- select
function select($aread=NULL,$awrite=NULL,$aexcept=NULL,$timeout=NULL)
{
while(1)
{
$res="";
$res=socket_select($aread, $awrite, $aexcept, $timeout);
// if errno===0 it means what select was interrrupted by SysV signal
if($res===false && socket_last_error($this->socket())!==0)
{ // error occured, interrupted not by a signal
$this->set_socket_error(__LINE__);
return(false);
}
break;
}
return(true);
}
//-- accept, wait for incomming connection
function accept()
{
$this->clear_socket_error();
$this->set_io_socket(_SOCKET_);
$socket=$this->socket();
$aread=array($socket);
if ($this->select($a=&$aread)===false)
return(false);
$child_socket=socket_accept($this->socket);
if($child_socket <= 0)
{ // error occured
$this->set_socket_error(__LINE__);
return(false);
}
$this->child_socket=$child_socket;
$this->sockets[_CHILD_SOCKET_]=&$this->child_socket;
$this->set_io_socket(_CHILD_SOCKET_);
$a=&$this->peername;
$res=socket_getpeername($child_socket,$a);
if($res <= 0)
{ // error occured
$this->set_socket_error(__LINE__);
return(false);
}
$this->get_address_and_port(_CHILD_SOCKET_);
TLogManager::phpserv("Connection accepted. ADDRESS $this->address, PORT $this->port","net_socket",__FILE__,__LINE__);
$this->connected=true;
return(true); // return new object of TNetSocket type
}
