接口: javax.microedition.io.ServerSocketConnection ，扩展了StreamConnectionNotifier
BNF:
url ::== "socket://" | "socket://" hostport
hostport ::== host ":" port
host ::== omitted for inbound connections
port ::== numeric port number (omitted for system assigned port)
例子:
"socket://:25"
"socket://:17"
"socket://"
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Socket Connection
支持: 推荐
接口: javax.microedition.io.SocketConnection ，扩展了StreamConnection
BNF:
