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Socket Programming Interview Question:
Explain Routines for converting data between a hosts internal representation and Network Byte Order?
Submitted by: AdministratorRoutines for converting data between a host's internal representation and Network Byte Order are:
#include <sys/types.h>
#include <netinet/in.h>
u_long htonl(u_long hostlong);
u_short htons(u_short hostshort);
u_long ntohl(u_long netlong);
u_short ntohs(u_short netshort);
These functions are macros and result in the insertion of conversion source code into the calling program. On little-endian machines the code will change the values around to network byte order. On big-endian machines no code is inserted since none is needed; the functions are defined as null.
Submitted by: Administrator
#include <sys/types.h>
#include <netinet/in.h>
u_long htonl(u_long hostlong);
u_short htons(u_short hostshort);
u_long ntohl(u_long netlong);
u_short ntohs(u_short netshort);
These functions are macros and result in the insertion of conversion source code into the calling program. On little-endian machines the code will change the values around to network byte order. On big-endian machines no code is inserted since none is needed; the functions are defined as null.
Submitted by: Administrator
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