connectToHost() resets local port number specified by bind

[mohammad.meo]

hello!

I try to connect to a server as tcp from client and bind(enter the port for the client), but after I connect to the host (used connecttoHost() method ) in the client
the port changed.
QT client:

Socket->bind(QHostAddress("localhost"),2555);
 
            Socket->connectToHost(QHostAddress::LocalHost,1458);

Socket->bind(QHostAddress("localhost"),2555);
 
            Socket->connectToHost(QHostAddress::LocalHost,1458);

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there is any method or approach to make the port for the client fix ??