SOCKET PROGRAMMING DISCUSSION

keshavmehta15

INTRODUCTION TO SOCKET

SOCKET : It is a communication technique like pipe which has file descriptor at one end and network connections at other end .

Socket is basically the first tool through which initiative of connection takes place .
Socket is created using Socket system call i.e socket(int domain,int type,protocol).
Socket system call return file descriptor at one end and its other end is initialised with port no. and IP address.

bhardwaj_himanshu

@keshav can you please explain the third argument of socket i.e protocol
What protocol exactly does and why we put 0

saurabh.hmr009

Protocol I think it will whether to use UDP protocol or TCP protocol . 0 is for default protocol.

keshavmehta15

@bhardwaj_himanshu

According to me the third argument in socket system call i.e 0 is used because we want kernel to decide the default protocol suitable for the communication ..... default protocol can be TCP also.

gauravchopra284

By using 0 as a 3rd argument in socket system call, default protocol will be used for a given domain and given connection type in a socket System Call.

surajk1164

the concept of third argument of the socket is that it enables default protocol depending on the type of the communication . let say , if you are using SOCK_STREAM style then the default protocol enabled is TCP . similarly if you are using SOCK_DGRAM style , then the default protocol will be UDP protocol.

SOCKET PROGRAMMING DISCUSSION

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