![]() UnknownHostException: if the IP address of the host could not be determined.That means you have to catch (or re-throw) these checked exceptions when creating a Socket instance. IOException: if an I/O error occurs when creating the socket. These constructors can throw the following checked exceptions: The first constructor is often used because of its simplicity. With the third constructor, you can explicitly specify the address and port number of the client if needed. JAVA 8 HTTP CLIENT FREESocket(InetAddress address, int port, InetAddress localAddr, int localPort)You see, it requires the IP address/hostname of the server and the port number.With the first two constructors, the system automatically assigns a free port number and a local address for the client computer. Initiate Connection to a Server:To make a connection to a server, create a new Socket object using one of the following constructors: JAVA 8 HTTP CLIENT HOW TOClose the connection.The steps 2 and 3 can be repeated many times depending on the nature of the communication.Now, let’s study how to use the Socket class to implement these steps. Read data from the server using an InputStream.Ĥ. Send data to the server using an OutputStream.ģ. The client initiates connection to a server specified by hostname/IP address and port number.Ģ. The following steps are applied for a typical communication with the server:ġ. You use this class to make connection to a server, send data to and read data from that server. Client Socket APIThe Socketclass represents a socket client. The examples are very interesting: a daytime client, a Whois client, a HTTP client and a SMTP client. ![]() In the next few minutes, you will see that Java makes it easy to develop networking applications as Java was built for the Internet. In this Java network programming tutorial, we’ll guide you how to write a client program that talks to a server using TCP/IP protocol. ![]()
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