These policy files also specify the ports to which SWF files can connect. The security requirements with regard to socket policy files have become more stringent in the last several releases of Flash Player. In all versions of Flash Player, Adobe recommends the use of a socket policy file. In some circumstances, a socket policy file is required. Therefore, if you are using Socket objects, make sure that the target host provides a socket policy file if necessary.
The following list summarizes the requirements for socket policy files in different versions of Flash Player:. The number of bytes of data available for reading in the input buffer. Your code must access bytesAvailable to ensure that sufficient data is available before trying to read it with one of the read methods. Indicates the amount of data in bytes awaiting transfer from the socket's write buffer to the network transport layer.
The following operations affect the value of bytesPending : A call to Socket. Adding data to the write buffer via a call to one of the Socket. When the operating system moves data from the write buffer to the network transport layer socket, the system updates bytesPending.
A call to Socket. Indicates whether this Socket object is currently connected. A call to this property returns a value of true if the socket is currently connected, or false otherwise. Indicates the byte order for the data.
Possible values are constants from the flash. Endian class, Endian. The IP address of the remote machine to which this socket is connected. The port on the remote machine to which this socket is connected. You can use this property to determine the port number of a client socket dispatched in a ServerSocketConnectEvent by a ServerSocket object.
Indicates the number of milliseconds to wait for a connection. If the connection doesn't succeed within the specified time, the connection fails. The default value is 20, 20 seconds. Creates a Socket object. If no parameters are specified, an initially disconnected socket is created. If parameters are specified, a connection is attempted to the specified host and port.
Note: It is strongly advised to use the constructor form without parameters. Next, add event listeners, then call the connect method with host and port parameters. This sequence guarantees that all event listeners work properly. Closes the socket. You cannot read or write any data after the close method has been called. The close event is dispatched only when the server closes the connection; it is not dispatched when you call the close method.
Connects the socket to the specified host and port. If the connection fails immediately, either an event is dispatched or an exception is thrown. An error event is dispatched if a host was specified, and an exception is thrown if no host was specified. Otherwise, an event reports the status of the connection. If the socket is already connected, the existing connection is closed first.
Note: For best practices on connecting to a socket, see the Socket class description. Parameters host :String — The name or IP address of the host to connect to. If no host is specified, the host that is contacted is the host where the calling file resides.
If you do not specify a host, use an event listener to determine whether the connection was successful. Flushes any accumulated data in the socket's output buffer. On some operating systems, flush is called automatically between execution frames. It is a good practice to call the flush method after each write to the socket. Reads a Boolean value from the socket. After reading a single byte, the method returns true if the byte is nonzero, and false otherwise. Reads the number of data bytes specified by the length parameter from the socket.
The bytes are read into the specified byte array, starting at the position indicated by offset. The default value of 0 causes all available data to be read. Parameters length :uint — The number of bytes from the byte stream to read. For a complete list, see Supported Character Sets. Note: If the system does not recognize the charSet parameter, the application uses the system's default code page as the character set. For example, a value for the charSet parameter, as in myTest.
On the other machine, the application uses the system's default code page. Reads a UTF-8 string from the socket. The method expects that the string is prefixed with an unsigned short integer that indicates the length in bytes. Reads the number of UTF-8 data bytes specified by the length parameter from the socket, and returns a string.
Parameters length :uint — The number of bytes to read. Writes a Boolean value to the socket. This method writes a single byte, with either a value of 1 true or 0 false. I know many experienced computer users who never give a thought to Bluetooth. Users of handheld computers such as my iPaq adopted the technology more quickly, as it allowed us to easily attach portable keyboards, headsets, printers, etc.
Bluetooth-enabled cell phones allow you to connect a PDA or portable computer to the Internet through them. Bluetooth was designed to be the basis of the Personal Area Network PAN — a way for devices within relatively close proximity to communicate wirelessly with one another. The range for Bluetooth transmissions varies from about 1 meter up to meters, depending on the power class of the device.
Thus, the most powerful Class 1 can communicate over a distance of more than feet, similar to a typical wi-fi network. Like Its speed is limited to about 1 Mbps far slower than wi-fi, but still roughly equivalent to a typical broadband Internet connection.
Each Bluetooth device has a unique bit device address. The authentication scheme is challenge-response, using symmetric keys, and encryption is done with a key that can be up to bits negotiated by the communicating devices, with each device having a maximum key length defined. A bit random link key handles security transactions between two or more devices. When two Bluetooth devices establish a communications channel, they both create an initialization key. A passkey or Personal Identification Number is input and the inititalization key is created, and the link key is calculated using it.
Then the link key is used for authentication. The first security concern is the passkey or PIN. As with any key, long keys are more secure than short ones. If a hacker is able to discover the passkey, he can calculate possible initiation keys, and then from that, calculate the link key. Making the passkey long will make it much harder to accomplish the first step. Asked 8 years, 8 months ago. Active 4 years, 1 month ago. Viewed 2k times. Can anybody help?
Improve this question. Italo Borges Italo Borges 2, 5 5 gold badges 30 30 silver badges 43 43 bronze badges. Apparently not: stackoverflow. Simon, do you know another way to do this? Another idea? I tried without socket. The receiving and sending works fine, but i don't know if its the better solution. Sorry - my response was just based on Google. I know nothing about socket. Add a comment. Active Oldest Votes. Improve this answer.
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