A UDP socket class




readFrom(buf:Bytes, pos:Int, len:Int, addr:Address):Int

Reads data from any incoming address and store the receiver address into the address parameter.

sendTo(buf:Bytes, pos:Int, len:Int, addr:Address):Int

Sends data to the specified target host/port address.


Allows the socket to send to broadcast addresses.

Inherited Variables

Defined by Socket


Available on cs, php, neko, cpp, macro, java, python, hl

A custom value that can be associated with the socket. Can be used to retrieve your custom infos after a select.

read onlyinput:Input

The stream on which you can read available data. By default the stream is blocking until the requested data is available, use setBlocking(false) or setTimeout to prevent infinite waiting.

read onlyoutput:Output

The stream on which you can send data. Please note that in case the output buffer you will block while writing the data, use setBlocking(false) or setTimeout to prevent that.

Inherited Methods

Defined by Socket


Accept a new connected client. This will return a connected socket on which you can read/write some data.

bind(host:Host, port:Int):Void

Bind the socket to the given host/port so it can afterwards listen for connections there.


Closes the socket : make sure to properly close all your sockets or you will crash when you run out of file descriptors.

connect(host:Host, port:Int):Void

Connect to the given server host/port. Throw an exception in case we couldn't successfully connect.

host():{port:Int, host:Host}

Return the information about our side of a connected socket.


Allow the socket to listen for incoming questions. The parameter tells how many pending connections we can have until they get refused. Use accept() to accept incoming connections.

peer():{port:Int, host:Host}

Return the information about the other side of a connected socket.


Read the whole data available on the socket.

Note: this is not meant to be used together with setBlocking(false), as it will always throw haxe.io.Error.Blocked. input methods should be used directly instead.


Change the blocking mode of the socket. A blocking socket is the default behavior. A non-blocking socket will abort blocking operations immediately by throwing a haxe.io.Error.Blocked value.


Allows the socket to immediately send the data when written to its output : this will cause less ping but might increase the number of packets / data size, especially when doing a lot of small writes.


Gives a timeout (in seconds) after which blocking socket operations (such as reading and writing) will abort and throw an exception.

shutdown(read:Bool, write:Bool):Void

Shutdown the socket, either for reading or writing.


Block until some data is available for read on the socket.


Write the whole data to the socket output.

Note: this is not meant to be used together with setBlocking(false), as haxe.io.Error.Blocked may be thrown mid-write with no indication of how many bytes have been written. output.writeBytes() should be used instead as it returns this information.