command line arguments

nickraj · 09-03-2006, 04:46 AM

hi

i have just started learning unix. I an making a client server program in c. two command line arguments argv[2] , argv[3] will have the ip address and port no , i m compiling the programm by gcc -lsocket 127.0.0.1 15000 a binding error is comming. Is there some problem in the following code
server.sin_port=htons(argv[3]);
server.sin_addr=htonl(argv[2]);
i am not able to figure it out

nick

Nylex · 09-03-2006, 04:55 AM

You're supposed to be passing the arguments when you run the program, not when you compile it, surely?

nickraj · 09-04-2006, 03:05 AM

Is program mane is also taken as commandline argument

Nylex · 09-04-2006, 03:13 AM

Edit: assuming by "program mane", you mean the filename, e.g. "program.c", then yes, of course you need to pass that to gcc. Otherwise, how will it know which file you want to compile?

w3bd3vil · 09-04-2006, 03:47 AM

lol

you need to first compile the program
gcc -o nickraj filename.c
then
./nickraj 127.0.0.1 15000

nickraj · 09-10-2006, 07:03 PM

hi
The program work when i give default ip (127.0.0.1) but when i use host name of server at client side(gethostbyname() ) it gives segmentation error while if i use the ip at client , connection error., occur.

i am using INADDR_ANY at server side cant i use server.sin_addr.s_addr=htonl(atoi(argv[1])); where server is struct sockaddr_in type and argv[1] is the ip address of server.

Nylex · 09-11-2006, 01:01 PM

Maybe you should post all your code, so people can check it.