#include <arpa/inet.h>
#include <netdb.h>
#include <sys/poll.h>
+`}
- typedef int S_DESCRIPTOR;
- typedef struct sockaddr_in S_ADDR_IN;
- typedef struct sockaddr S_ADDR;
- typedef struct in_addr S_IN_ADDR;
- typedef struct hostent S_HOSTENT;
- typedef struct timeval S_TIMEVAL;
- typedef struct sockaccept_result { S_ADDR_IN addr_in; S_DESCRIPTOR s_desc; } S_ACCEPT_RESULT;
- typedef fd_set S_FD_SET;
- typedef socklen_t S_LEN;
+in "C" `{
+ #include <fcntl.h>
+ #include <netinet/tcp.h>
`}
# Wrapper for the data structure PollFD used for polling on a socket
class PollFD
+ super FinalizableOnce
# The PollFD object
- private var poll_struct: FFSocketPollFD
+ private var poll_struct: NativeSocketPollFD
# A collection of the events to be watched
- var events: Array[FFSocketPollValues]
+ var events: Array[NativeSocketPollValues]
- init(pid: Int, events: Array[FFSocketPollValues])
+ init(pid: Int, events: Array[NativeSocketPollValues])
do
assert events.length >= 1
self.events = events
events_in_one += events[i]
end
- self.poll_struct = new FFSocketPollFD(pid, events_in_one)
+ self.poll_struct = new NativeSocketPollFD(pid, events_in_one)
end
# Reads the response and returns an array with the type of events that have been found
- private fun check_response(response: Int): Array[FFSocketPollValues]
+ private fun check_response(response: Int): Array[NativeSocketPollValues]
do
- var resp_array = new Array[FFSocketPollValues]
+ var resp_array = new Array[NativeSocketPollValues]
for i in events do
if c_check_resp(response, i) != 0 then
resp_array.push(i)
end
# Checks if the poll call has returned true for a particular type of event
- private fun c_check_resp(response: Int, mask: FFSocketPollValues): Int
+ private fun c_check_resp(response: Int, mask: NativeSocketPollValues): Int
`{
return response & mask;
`}
+ redef fun finalize_once
+ do
+ poll_struct.free
+ end
end
# Data structure used by the poll function
-private extern FFSocketPollFD `{ struct pollfd `}
- # File descriptor id
- private fun fd: Int `{ return recv.fd; `}
+private extern class NativeSocketPollFD `{ struct pollfd * `}
+
+ # File descriptor
+ fun fd: Int `{ return self->fd; `}
+
# List of events to be watched
- private fun events: Int `{ return recv.events; `}
+ fun events: Int `{ return self->events; `}
+
# List of events received by the last poll function
- private fun revents: Int `{ return recv.revents; `}
+ fun revents: Int `{ return self->revents; `}
- new (pid: Int, events: FFSocketPollValues) `{
- struct pollfd poll;
- poll.fd = pid;
- poll.events = events;
+ new (pid: Int, events: NativeSocketPollValues) `{
+ struct pollfd *poll = malloc(sizeof(struct pollfd));
+ poll->fd = pid;
+ poll->events = events;
return poll;
`}
-
end
-extern FFSocket `{ S_DESCRIPTOR* `}
- new socket(domain: FFSocketAddressFamilies, socketType: FFSocketTypes, protocol: FFSocketProtocolFamilies) `{
- S_DESCRIPTOR *d = NULL; d = (S_DESCRIPTOR*) malloc( sizeof(S_DESCRIPTOR) );
+extern class NativeSocket `{ int* `}
+
+ new socket(domain: NativeSocketAddressFamilies, socketType: NativeSocketTypes, protocol: NativeSocketProtocolFamilies) `{
int ds = socket(domain, socketType, protocol);
if(ds == -1){
- free(d);
return NULL;
}
+ int *d = malloc(sizeof(int));
memcpy(d, &ds, sizeof(ds));
return d;
`}
- fun destroy `{ free(recv); `}
- fun close: Int `{ return close( *recv ); `}
- fun descriptor: Int `{ return *recv; `}
-
- fun gethostbyname(n: String): FFSocketHostent import String.to_cstring `{ return gethostbyname(String_to_cstring(n)); `}
- fun connect(addrIn: FFSocketAddrIn): Int `{ return connect( *recv, (S_ADDR*)addrIn, sizeof(*addrIn) ); `}
- fun write(buffer: String): Int import String.to_cstring, String.length `{ return write(*recv, (char*)String_to_cstring(buffer), String_length(buffer)); `}
-
- fun read: String import NativeString.to_s_with_length `{
- static char c[1024];
- int n = read(*recv, c, 1024);
- if(n < 0) {
- return NativeString_to_s_with_length("",0);
- }
- char* ret = malloc(n + 1);
- memcpy(ret, c, n);
- ret[n] = '\0';
- return NativeString_to_s_with_length(ret, n);
+
+ fun destroy `{ free(self); `}
+
+ fun close: Int `{ return close(*self); `}
+
+ fun descriptor: Int `{ return *self; `}
+
+ fun connect(addrIn: NativeSocketAddrIn): Int `{
+ return connect(*self, (struct sockaddr*)addrIn, sizeof(*addrIn));
+ `}
+
+ # Write `length` bytes from `buffer`
+ fun write(buffer: CString, length: Int): Int `{
+ return write(*self, buffer, length);
+ `}
+
+ # Write `value` as a single byte
+ fun write_byte(value: Byte): Int `{
+ unsigned char byt = (unsigned char)value;
+ return write(*self, &byt, 1);
+ `}
+
+ # Read `length` bytes into `buffer`, returns the number of bytes read
+ fun read(buffer: CString, length: Int): Int `{
+ return read(*self, buffer, length);
`}
# Sets an option for the socket
- fun setsockopt(level: FFSocketOptLevels, option_name: FFSocketOptNames, option_value: Int) `{
- int err = setsockopt(*recv, level, option_name, &option_value, sizeof(int));
+ #
+ # Returns `true` on success.
+ fun setsockopt(level: NativeSocketOptLevels, option_name: NativeSocketOptNames, option_value: Int): Bool `{
+ int err = setsockopt(*self, level, option_name, &option_value, sizeof(int));
if(err != 0){
- perror("Error on setsockopts : ");
- exit(1);
+ return 0;
}
+ return 1;
`}
- fun bind(addrIn: FFSocketAddrIn): Int `{ return bind(*recv, (S_ADDR*)addrIn, sizeof(*addrIn)); `}
- fun listen(size: Int): Int `{ return listen(*recv, size); `}
+ fun bind(addrIn: NativeSocketAddrIn): Int `{ return bind(*self, (struct sockaddr*)addrIn, sizeof(*addrIn)); `}
+
+ fun listen(size: Int): Int `{ return listen(*self, size); `}
# Checks if the buffer is ready for any event specified when creating the pollfd structure
- fun socket_poll(filedesc: PollFD, timeout: Int): Array[FFSocketPollValues]
+ fun socket_poll(filedesc: PollFD, timeout: Int): Array[NativeSocketPollValues]
do
- var result = i_poll(filedesc.poll_struct, timeout)
+ var result = native_poll(filedesc.poll_struct, timeout)
assert result != -1
return filedesc.check_response(result)
end
+ # Poll this socket with `POLLHUP|POLLERR`
+ #
+ # A return value of 0 means there is no errors.
+ fun poll_hup_err: Int `{
+ struct pollfd fd = {*self, POLLHUP|POLLERR, 0};
+ int res = poll(&fd, 1, 0);
+ return res;
+ `}
+
# Call to the poll function of the C socket
#
- # Signature :
+ # Signature:
# int poll(struct pollfd fds[], nfds_t nfds, int timeout);
#
- # Official documentation of the poll function :
+ # Official documentation of the poll function:
#
# The poll() function provides applications with a mechanism for multiplexing input/output over a set of file descriptors.
# For each member of the array pointed to by fds, poll() shall examine the given file descriptor for the event(s) specified in events.
# It is a pointer to an array with one member for each open file descriptor of interest.
# The array's members are pollfd structures within which fd specifies an open file descriptor and events and revents are bitmasks constructed by
# OR'ing a combination of the pollfd flags.
- private fun i_poll(filedesc: FFSocketPollFD, timeout: Int): Int `{
- int poll_return = poll(&filedesc, 1, timeout);
+ private fun native_poll(filedesc: NativeSocketPollFD, timeout: Int): Int `{
+ int poll_return = poll(filedesc, 1, timeout);
return poll_return;
`}
- private fun i_accept(addrIn: FFSocketAddrIn): FFSocket `{
- S_LEN s = sizeof(S_ADDR);
- S_DESCRIPTOR *d = NULL;
- d = malloc(sizeof(S_DESCRIPTOR));
- *d = accept(*recv,(S_ADDR*)addrIn, &s);
- return d;
+ private fun native_accept(addr_in: NativeSocketAddrIn): NativeSocket `{
+ socklen_t s = sizeof(struct sockaddr);
+ int socket = accept(*self, (struct sockaddr*)addr_in, &s);
+ if (socket == -1) return NULL;
+
+ int *ptr = malloc(sizeof(int));
+ *ptr = socket;
+ return ptr;
`}
- fun accept: FFSocketAcceptResult
+
+ fun accept: nullable SocketAcceptResult
do
- var addrIn = new FFSocketAddrIn
- var s = i_accept(addrIn)
- return new FFSocketAcceptResult(s, addrIn)
+ var addrIn = new NativeSocketAddrIn
+ var s = native_accept(addrIn)
+ if s.address_is_null then return null
+ return new SocketAcceptResult(s, addrIn)
end
-end
-extern FFSocketAcceptResult `{ S_ACCEPT_RESULT* `}
- new (socket: FFSocket, addrIn: FFSocketAddrIn) `{
- S_ACCEPT_RESULT *sar = NULL;
- sar = malloc( sizeof(S_ACCEPT_RESULT) );
- sar->s_desc = *socket;
- sar->addr_in = *addrIn;
- return sar;
+ # Set whether this socket is non blocking
+ fun non_blocking=(value: Bool) `{
+ int flags = fcntl(*self, F_GETFL, 0);
+ if (flags == -1) flags = 0;
+
+ if (value) {
+ flags = flags | O_NONBLOCK;
+ } else if (flags & O_NONBLOCK) {
+ flags = flags - O_NONBLOCK;
+ } else {
+ return;
+ }
+ fcntl(*self, F_SETFL, flags);
+ `}
+
+ # Send `len` bytes from `buf` to `dest_addr`
+ fun sendto(buf: CString, len: Int, flags: Int, dest_addr: NativeSocketAddrIn): Int `{
+ return sendto(*self, buf, len, flags, (struct sockaddr*)dest_addr, sizeof(struct sockaddr_in));
`}
- fun socket: FFSocket `{ return &recv->s_desc; `}
- fun addrIn: FFSocketAddrIn `{ return &recv->addr_in; `}
- fun destroy `{ free(recv); `}
+
+ # Receive a message into `buf` of maximum `len` bytes
+ fun recv(buf: CString, len: Int, flags: Int): Int `{
+ return recv(*self, buf, len, flags);
+ `}
+
+ # Receive a message into `buf` of maximum `len` bytes and store sender info into `src_addr`
+ fun recvfrom(buf: CString, len: Int, flags: Int, src_addr: NativeSocketAddrIn): Int `{
+ socklen_t srclen = sizeof(struct sockaddr_in);
+ return recvfrom(*self, buf, len, flags, (struct sockaddr*)src_addr, &srclen);
+ `}
+end
+
+# Result of a call to `NativeSocket::accept`
+class SocketAcceptResult
+
+ # Opened socket
+ var socket: NativeSocket
+
+ # Address of the remote client
+ var addr_in: NativeSocketAddrIn
end
-extern FFSocketAddrIn `{ S_ADDR_IN* `}
+# Socket address in the Internet namespace, pointer to a `struct sockaddr_in`
+extern class NativeSocketAddrIn `{ struct sockaddr_in* `}
+
+ # `NULL` pointer
+ new nul `{ return NULL; `}
+
+ # `malloc` a new instance
new `{
- S_ADDR_IN *sai = NULL;
- sai = malloc( sizeof(S_ADDR_IN) );
- return sai;
- `}
- new with(port: Int, family: FFSocketAddressFamilies) `{
- S_ADDR_IN *sai = NULL;
- sai = malloc( sizeof(S_ADDR_IN) );
- sai->sin_family = family;
- sai->sin_port = htons(port);
- sai->sin_addr.s_addr = INADDR_ANY;
+ struct sockaddr_in *sai = NULL;
+ sai = malloc(sizeof(struct sockaddr_in));
return sai;
`}
- new with_hostent(hostent: FFSocketHostent, port: Int) `{
- S_ADDR_IN *sai = NULL;
- sai = malloc( sizeof(S_ADDR_IN) );
- sai->sin_family = hostent->h_addrtype;
- sai->sin_port = htons(port);
- memcpy( (char*)&sai->sin_addr.s_addr, (char*)hostent->h_addr, hostent->h_length );
- return sai;
+
+ # Set `address` and `family` from `hostent` (to use with `Sys::gethostbyname`)
+ fun fill_from_hostent(hostent: NativeSocketHostent) `{
+ self->sin_family = hostent->h_addrtype;
+ memcpy((char*)&self->sin_addr.s_addr,
+ (char*)hostent->h_addr,
+ hostent->h_length);
`}
- fun address: String import NativeString.to_s `{ return NativeString_to_s( (char*)inet_ntoa(recv->sin_addr) ); `}
- fun family: FFSocketAddressFamilies `{ return recv->sin_family; `}
- fun port: Int `{ return ntohs(recv->sin_port); `}
- fun destroy `{ free(recv); `}
+
+ # Internet address as then IPV4 numbers-and-dots notation
+ fun address: CString `{ return (char*)inet_ntoa(self->sin_addr); `}
+
+ # Set `address` to `INADDR_ANY`
+ fun address_any `{ self->sin_addr.s_addr = INADDR_ANY; `}
+
+ # Set `address` to `INADDR_BROADCAST`
+ fun address_broadcast `{ self->sin_addr.s_addr = INADDR_BROADCAST; `}
+
+ # Address family
+ fun family: NativeSocketAddressFamilies `{ return self->sin_family; `}
+
+ # Address family
+ fun family=(value: NativeSocketAddressFamilies) `{ self->sin_family = value; `}
+
+ # Port
+ fun port: Int `{ return ntohs(self->sin_port); `}
+
+ # Port
+ fun port=(value: Int) `{ self->sin_port = htons(value); `}
end
-extern FFSocketHostent `{ S_HOSTENT* `}
- private fun i_h_aliases(i: Int): String import NativeString.to_s `{ return NativeString_to_s(recv->h_aliases[i]); `}
- private fun i_h_aliases_reachable(i: Int): Bool `{ return (recv->h_aliases[i] != NULL); `}
+# Host entry information, a pointer to a `struct hostent`
+extern class NativeSocketHostent `{ struct hostent* `}
+ private fun native_h_aliases(i: Int): CString `{
+ return self->h_aliases[i];
+ `}
+
+ # Alternative names for the host
fun h_aliases: Array[String]
do
- var i=0
- var d=new Array[String]
+ var res = new Array[String]
loop
- d.add(i_h_aliases(i))
- if i_h_aliases_reachable(i+1) == false then break
- i += 1
+ var ha = native_h_aliases(res.length)
+ if ha.address_is_null then break
+ res.add ha.to_s
end
- return d
+ return res
end
- fun h_addr: String import NativeString.to_s `{ return NativeString_to_s( (char*)inet_ntoa(*(S_IN_ADDR*)recv->h_addr) ); `}
- fun h_addrtype: Int `{ return recv->h_addrtype; `}
- fun h_length: Int `{ return recv->h_length; `}
- fun h_name: String import NativeString.to_s `{ return NativeString_to_s(recv->h_name); `}
+
+ fun h_addr: CString `{
+ return (char*)inet_ntoa(*(struct in_addr*)self->h_addr);
+ `}
+
+ fun h_addrtype: Int `{ return self->h_addrtype; `}
+
+ fun h_length: Int `{ return self->h_length; `}
+
+ fun h_name: CString `{ return self->h_name; `}
end
-extern FFTimeval `{ S_TIMEVAL* `}
+extern class NativeTimeval `{ struct timeval* `}
new (seconds: Int, microseconds: Int) `{
- S_TIMEVAL* tv = NULL;
- tv = malloc( sizeof(S_TIMEVAL) );
+ struct timeval* tv = NULL;
+ tv = malloc(sizeof(struct timeval));
tv->tv_sec = seconds;
tv->tv_usec = microseconds;
return tv;
`}
- fun seconds: Int `{ return recv->tv_sec; `}
- fun microseconds: Int `{ return recv->tv_usec; `}
- fun destroy `{ free( recv ); `}
+
+ fun seconds: Int `{ return self->tv_sec; `}
+
+ fun microseconds: Int `{ return self->tv_usec; `}
+
+ fun destroy `{ free(self); `}
end
-extern FFSocketSet `{ S_FD_SET* `}
+extern class NativeSocketSet `{ fd_set* `}
new `{
- S_FD_SET *f = NULL;
- f = malloc( sizeof(S_FD_SET) );
+ fd_set *f = NULL;
+ f = malloc(sizeof(fd_set));
return f;
`}
- fun set(s: FFSocket) `{ FD_SET( *s, recv ); `}
- fun is_set(s: FFSocket): Bool `{ return FD_ISSET( *s, recv ); `}
- fun zero `{ FD_ZERO( recv ); `}
- fun clear(s: FFSocket) `{ FD_CLR( *s, recv ); `}
- fun destroy `{ free( recv ); `}
+
+ fun set(s: NativeSocket) `{ FD_SET(*s, self); `}
+
+ fun is_set(s: NativeSocket): Bool `{ return FD_ISSET(*s, self); `}
+
+ fun zero `{ FD_ZERO(self); `}
+
+ fun clear(s: NativeSocket) `{ FD_CLR(*s, self); `}
+
+ fun destroy `{ free(self); `}
end
-class FFSocketObserver
- fun select(max: FFSocket, reads: nullable FFSocketSet, write: nullable FFSocketSet,
- except: nullable FFSocketSet, timeout: FFTimeval): Int `{
- S_FD_SET *rds, *wts, *exs = NULL;
- S_TIMEVAL *tm = NULL;
- if(reads != NULL) rds = (S_FD_SET*)reads;
- if(write != NULL) wts = (S_FD_SET*)write;
- if(except != NULL) exs = (S_FD_SET*)except;
- if(timeout != NULL) tm = (S_TIMEVAL*)timeout;
+class NativeSocketObserver
+ # FIXME this implementation is broken. `reads`, `write` and `except`
+ # are boxed objects, passing them to a C function is illegal.
+ fun select(max: NativeSocket, reads: nullable NativeSocketSet, write: nullable NativeSocketSet,
+ except: nullable NativeSocketSet, timeout: NativeTimeval): Int `{
+ fd_set *rds = NULL,
+ *wts = NULL,
+ *exs = NULL;
+ struct timeval *tm = NULL;
+ if (reads != NULL) rds = (fd_set*)reads;
+ if (write != NULL) wts = (fd_set*)write;
+ if (except != NULL) exs = (fd_set*)except;
+ if (timeout != NULL) tm = (struct timeval*)timeout;
return select(*max, rds, wts, exs, tm);
`}
end
-extern FFSocketTypes `{ int `}
+extern class NativeSocketTypes `{ int `}
new sock_stream `{ return SOCK_STREAM; `}
new sock_dgram `{ return SOCK_DGRAM; `}
new sock_raw `{ return SOCK_RAW; `}
new sock_seqpacket `{ return SOCK_SEQPACKET; `}
end
-extern FFSocketAddressFamilies `{ int `}
+
+extern class NativeSocketAddressFamilies `{ int `}
new af_null `{ return 0; `}
- new af_unspec `{ return AF_UNSPEC; `} # unspecified
- new af_unix `{ return AF_UNIX; `} # local to host (pipes)
- new af_local `{ return AF_LOCAL; `} # backward compatibility
- new af_inet `{ return AF_INET; `} # internetwork: UDP, TCP, etc.
- new af_sna `{ return AF_SNA; `} # IBM SNA
- new af_decnet `{ return AF_DECnet; `} # DECnet
- new af_route `{ return AF_ROUTE; `} # Internal Routing Protocol
- new af_ipx `{ return AF_IPX; `} # Novell Internet Protocol
- new af_isdn `{ return AF_ISDN; `} # Integrated Services Digital Network
- new af_inet6 `{ return AF_INET6; `} # IPv6
- new af_max `{ return AF_MAX; `}
+
+ # Unspecified
+ new af_unspec `{ return AF_UNSPEC; `}
+
+ # Local to host (pipes)
+ new af_unix `{ return AF_UNIX; `}
+
+ # For backward compatibility
+ new af_local `{ return AF_LOCAL; `}
+
+ # Internetwork: UDP, TCP, etc.
+ new af_inet `{ return AF_INET; `}
+
+ # IBM SNA
+ new af_sna `{ return AF_SNA; `}
+
+ # DECnet
+ new af_decnet `{ return AF_DECnet; `}
+
+ # Internal Routing Protocol
+ new af_route `{ return AF_ROUTE; `}
+
+ # Novell Internet Protocol
+ new af_ipx `{ return AF_IPX; `}
+
+ # IPv6
+ new af_inet6 `{ return AF_INET6; `}
+
+ new af_max `{ return AF_MAX; `}
end
-extern FFSocketProtocolFamilies `{ int `}
+
+extern class NativeSocketProtocolFamilies `{ int `}
new pf_null `{ return 0; `}
new pf_unspec `{ return PF_UNSPEC; `}
new pf_local `{ return PF_LOCAL; `}
new pf_decnet `{ return PF_DECnet; `}
new pf_route `{ return PF_ROUTE; `}
new pf_ipx `{ return PF_IPX; `}
- new pf_isdn `{ return PF_ISDN; `}
new pf_key `{ return PF_KEY; `}
new pf_inet6 `{ return PF_INET6; `}
new pf_max `{ return PF_MAX; `}
+ new ipproto_udp `{ return IPPROTO_UDP; `}
end
+
# Level on which to set options
-extern FFSocketOptLevels `{ int `}
+extern class NativeSocketOptLevels `{ int `}
+
# Dummy for IP (As defined in C)
new ip `{ return IPPROTO_IP;`}
+
# Control message protocol
new icmp `{ return IPPROTO_ICMP;`}
+
# Use TCP
new tcp `{ return IPPROTO_TCP; `}
+
# Socket level options
new socket `{ return SOL_SOCKET; `}
end
+
# Options for socket, use with setsockopt
-extern FFSocketOptNames `{ int `}
+extern class NativeSocketOptNames `{ int `}
+
# Enables debugging information
new debug `{ return SO_DEBUG; `}
+
# Authorizes the broadcasting of messages
new broadcast `{ return SO_BROADCAST; `}
+
# Authorizes the reuse of the local address
new reuseaddr `{ return SO_REUSEADDR; `}
+
# Authorizes the use of keep-alive packets in a connection
new keepalive `{ return SO_KEEPALIVE; `}
+
+ # Disable the Nagle algorithm and send data as soon as possible, in smaller packets
+ new tcp_nodelay `{ return TCP_NODELAY; `}
end
+
# Used for the poll function of a socket, mix several Poll values to check for events on more than one type of event
-extern FFSocketPollValues `{ int `}
- new pollin `{ return POLLIN; `} # Data other than high-priority data may be read without blocking.
- new pollrdnorm `{ return POLLRDNORM; `} # Normal data may be read without blocking.
- new pollrdband `{ return POLLRDBAND; `} # Priority data may be read without blocking.
- new pollpri `{ return POLLPRI; `} # High-priority data may be read without blocking.
- new pollout `{ return POLLOUT; `} # Normal data may be written without blocking.
- new pollwrnorm `{ return POLLWRNORM; `} # Equivalent to POLLOUT
- new pollwrband `{ return POLLWRBAND; `} # Priority data may be written.
- new pollerr `{ return POLLERR; `} # An error has occurred on the device or stream. This flag is only valid in the revents bitmask; it shall be ignored in the events member.
- new pollhup `{ return POLLHUP; `} # The device has been disconnected. This event and POLLOUT are mutually-exclusive; a stream can never be writable if a hangup has occurred. However, this event and POLLIN, POLLRDNORM, POLLRDBAND, or POLLPRI are not mutually-exclusive. This flag is only valid in the revents bitmask; it shall be ignored in the events member.
- new pollnval `{ return POLLNVAL; `} # The specified fd value is invalid. This flag is only valid in the revents member; it shall ignored in the events member.
-
- # Combines two FFSocketPollValues
- private fun +(other: FFSocketPollValues): FFSocketPollValues `{
- return recv | other;
+extern class NativeSocketPollValues `{ int `}
+
+ # Data other than high-priority data may be read without blocking.
+ new pollin `{ return POLLIN; `}
+
+ # Normal data may be read without blocking.
+ new pollrdnorm `{ return POLLRDNORM; `}
+
+ # Priority data may be read without blocking.
+ new pollrdband `{ return POLLRDBAND; `}
+
+ # High-priority data may be read without blocking.
+ new pollpri `{ return POLLPRI; `}
+
+ # Normal data may be written without blocking.
+ new pollout `{ return POLLOUT; `}
+
+ # Equivalent to POLLOUT
+ new pollwrnorm `{ return POLLWRNORM; `}
+
+ # Priority data may be written.
+ new pollwrband `{ return POLLWRBAND; `}
+
+ # An error has occurred on the device or stream.
+ #
+ # This flag is only valid in the revents bitmask; it shall be ignored in the events member.
+ new pollerr `{ return POLLERR; `}
+
+ # The device has been disconnected.
+ #
+ # This event and POLLOUT are mutually-exclusive; a stream can never be
+ # writable if a hangup has occurred. However, this event and POLLIN,
+ # POLLRDNORM, POLLRDBAND, or POLLPRI are not mutually-exclusive.
+ #
+ # This flag is only valid in the revents bitmask; it shall be ignored in the events member.
+ new pollhup `{ return POLLHUP; `}
+
+ # The specified fd value is invalid.
+ #
+ # This flag is only valid in the revents member; it shall ignored in the events member.
+ new pollnval `{ return POLLNVAL; `}
+
+ # Combines two NativeSocketPollValues
+ private fun +(other: NativeSocketPollValues): NativeSocketPollValues `{
+ return self | other;
+ `}
+end
+
+redef class Sys
+ # Get network host entry
+ fun gethostbyname(name: CString): NativeSocketHostent `{
+ return gethostbyname(name);
`}
+
+ # Last error raised by `gethostbyname`
+ fun h_errno: HErrno `{ return h_errno; `}
+end
+
+# Error code of `Sys::h_errno`
+extern class HErrno `{ int `}
+ # The specified host is unknown
+ fun host_not_found: Bool `{ return self == HOST_NOT_FOUND; `}
+
+ # The requested name is valid but does not have an IP address
+ #
+ # Same as `no_data`.
+ fun no_address: Bool `{ return self == NO_ADDRESS; `}
+
+ # The requested name is valid byt does not have an IP address
+ #
+ # Same as `no_address`.
+ fun no_data: Bool `{ return self == NO_DATA; `}
+
+ # A nonrecoverable name server error occurred
+ fun no_recovery: Bool `{ return self == NO_RECOVERY; `}
+
+ # A temporary error occurred on an authoritative name server, try again later
+ fun try_again: Bool `{ return self == TRY_AGAIN; `}
+
+ redef fun to_s
+ do
+ if host_not_found then
+ return "The specified host is unknown"
+ else if no_address then
+ return "The requested name is valid but does not have an IP address"
+ else if no_recovery then
+ return "A nonrecoverable name server error occurred"
+ else if try_again then
+ return "A temporary error occurred on an authoritative name server, try again later"
+ else
+ # This may happen if another call was made to `gethostbyname`
+ # before we fetch the error code.
+ return "Unknown error on `gethostbyname`"
+ end
+ end
end
nitlanguage / nit.git / blobdiff