[]Struct gio::Socket

pub struct Socket(_, _);

A Socket is a low-level networking primitive. It is a more or less direct mapping of the BSD socket API in a portable GObject based API. It supports both the UNIX socket implementations and winsock2 on Windows.

Socket is the platform independent base upon which the higher level network primitives are based. Applications are not typically meant to use it directly, but rather through classes like SocketClient, SocketService and SocketConnection. However there may be cases where direct use of Socket is useful.

Socket implements the Initable interface, so if it is manually constructed by e.g. gobject::Object::new you must call Initable::init and check the results before using the object. This is done automatically in Socket::new and Socket::new_from_fd, so these functions can return None.

Sockets operate in two general modes, blocking or non-blocking. When in blocking mode all operations (which don’t take an explicit blocking parameter) block until the requested operation is finished or there is an error. In non-blocking mode all calls that would block return immediately with a IOErrorEnum::WouldBlock error. To know when a call would successfully run you can call SocketExt::condition_check, or SocketExt::condition_wait. You can also use Socket::create_source and attach it to a glib::MainContext to get callbacks when I/O is possible. Note that all sockets are always set to non blocking mode in the system, and blocking mode is emulated in GSocket.

When working in non-blocking mode applications should always be able to handle getting a IOErrorEnum::WouldBlock error even when some other function said that I/O was possible. This can easily happen in case of a race condition in the application, but it can also happen for other reasons. For instance, on Windows a socket is always seen as writable until a write returns IOErrorEnum::WouldBlock.

GSockets can be either connection oriented or datagram based. For connection oriented types you must first establish a connection by either connecting to an address or accepting a connection from another address. For connectionless socket types the target/source address is specified or received in each I/O operation.

All socket file descriptors are set to be close-on-exec.

Note that creating a Socket causes the signal SIGPIPE to be ignored for the remainder of the program. If you are writing a command-line utility that uses Socket, you may need to take into account the fact that your program will not automatically be killed if it tries to write to stdout after it has been closed.

Like most other APIs in GLib, Socket is not inherently thread safe. To use a Socket concurrently from multiple threads, you must implement your own locking.

Implements

SocketExt, glib::object::ObjectExt, SocketExtManual

Implementations

impl Socket[src]

pub unsafe fn from_fd<T: IntoRawFd>(fd: T) -> Result<Socket, Error>[src]

pub unsafe fn from_socket<T: IntoRawSocket>(socket: T) -> Result<Socket, Error>[src]

impl Socket[src]

pub fn new(
    family: SocketFamily,
    type_: SocketType,
    protocol: SocketProtocol
) -> Result<Socket, Error>
[src]

Creates a new Socket with the defined family, type and protocol. If protocol is 0 (SocketProtocol::Default) the default protocol type for the family and type is used.

The protocol is a family and type specific int that specifies what kind of protocol to use. SocketProtocol lists several common ones. Many families only support one protocol, and use 0 for this, others support several and using 0 means to use the default protocol for the family and type.

The protocol id is passed directly to the operating system, so you can use protocols not listed in SocketProtocol if you know the protocol number used for it.

family

the socket family to use, e.g. SocketFamily::Ipv4.

type_

the socket type to use.

protocol

the id of the protocol to use, or 0 for default.

Returns

a Socket or None on error. Free the returned object with gobject::ObjectExt::unref.

Trait Implementations

impl AsRawFd for Socket[src]

impl AsRawSocket for Socket[src]

impl Clone for Socket

impl Debug for Socket

impl Display for Socket[src]

impl Eq for Socket

impl Hash for Socket

impl Ord for Socket

impl<T: ObjectType> PartialEq<T> for Socket

impl<T: ObjectType> PartialOrd<T> for Socket

impl SendUnique for Socket[src]

impl StaticType for Socket

Auto Trait Implementations

impl RefUnwindSafe for Socket

impl !Send for Socket

impl !Sync for Socket

impl Unpin for Socket

impl UnwindSafe for Socket

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
[src]

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

impl<Super, Sub> CanDowncast<Sub> for Super where
    Sub: IsA<Super>,
    Super: IsA<Super>, 

impl<T> Cast for T where
    T: ObjectType, 

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T> ObjectExt for T where
    T: ObjectType, 

impl<'a, T> ToGlibContainerFromSlice<'a, *const GList> for T where
    T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>, 

type Storage = (Option<List>, Vec<Stash<'a, <T as GlibPtrDefault>::GlibType, T>>)

impl<'a, T> ToGlibContainerFromSlice<'a, *const GPtrArray> for T where
    T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>, 

type Storage = (Option<PtrArray>, Vec<Stash<'a, <T as GlibPtrDefault>::GlibType, T>>)

impl<'a, T> ToGlibContainerFromSlice<'a, *mut GArray> for T where
    T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>, 

type Storage = (Option<Array>, Vec<Stash<'a, <T as GlibPtrDefault>::GlibType, T>>)

impl<'a, T> ToGlibContainerFromSlice<'a, *mut GList> for T where
    T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>, 

type Storage = (Option<List>, Vec<Stash<'a, <T as GlibPtrDefault>::GlibType, T>>)

impl<'a, T> ToGlibContainerFromSlice<'a, *mut GPtrArray> for T where
    T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>, 

type Storage = (Option<PtrArray>, Vec<Stash<'a, <T as GlibPtrDefault>::GlibType, T>>)

impl<T> ToOwned for T where
    T: Clone
[src]

type Owned = T

The resulting type after obtaining ownership.

impl<T> ToString for T where
    T: Display + ?Sized
[src]

impl<T> ToValue for T where
    T: SetValue + ?Sized

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.