socket介绍（国外英文资料）.docVIP

socket介绍（国外英文资料） The socket/socket Sockets let you send raw streams of bytes back and forth between two computers, giving you fairly low-level access to the TCP/IP protocol. See the File I/O Amanuensis for sample code to do that. In TCP/IP each computer has a name, such as . However, various TCP/IP programs could be running on that computer. Each Socket gets a assigned a number called a port. The HTTP server would usually be assigned 80. DbAnywhere is usually 8889. This way you can specify which service on the local or remote machine you want to connect with. The Socket is specified like this: :8889. Socket provides the host passed between original byte stream function, access to TCP/IP protocol to compare the bottom layer. Can access to the file I/o similar ways to achieve this function (in Unix, took the form of file access system resources, including network resources), TCP/IP agreement, each host has a name, such as , however, may be on the same host running at the same time a lot of TCP/IP application. Each socket was assigned to a named port Numbers to distinguish between different applications or connection. HTTP application server port is specified as commonly 80, DbAnywhere usually designated as 8889. In this way, we distinguish between the services you request connection to the remote or local hosts. A socket is defined as address: port, for example, : 8889 Flush and refreshing If you write to a Socket, you usually need to call flush to force the data out onto the net. If you fail to do that, you could wait forever for a response because your complete query was never sent. You don t need to flush the If you are sending a steady stream of data that will push earlier data out onto the net. If write data to a socket, you usually need to call flush method to send data to the network. If the operation fails, may be due to complete request message not sent successfully continue to wait for a response. If you are using a stable way of data flow, do not need to ca