TCP Socketprogramming ( basics questions)

[zeeshannnetwork]

Hi Everyone,

I am from Networking back ground,I have some conceptual questions about TCP Socket.

Let say we have two machines SERVER and Client

Client will send some data via TCP SOCKET to Server.

I have seen where Client can use TCP socket where it instructs the Socket to Send particular amount of bytes from the Buffer in SEND function.
But I have also seen where TCP uses particular MSS, my question is :

What eventually decides the maximum segment size that TCP socket can send is it configured/negotiated MSS or number of bytes specified in SEND function?


Thanks and have a nice weekend!!