Set HTTP timeout in Java

Before jdk1.5

System. setproperty ("sun.net. Client. defaulttimetimeout", "30000 ");
System. setproperty ("sun.net. Client. defaultreadtimeout", "30000 ");

Set the preceding two attributes.

After jdk1.5, The java.net. urlconnection class has two functions available: setconnecttimeout and setreadtimeout.

Q: The implementation of HTTP is based on socket connections. Does the socket connection itself have a timeout time? If the timeout value set here is greater than the default timeout value of the socket (we should believe it has a default value), what will happen?