function::htonl - Linux
Overview
The function::htonl
function in Linux is used to convert a 32-bit integer (host byte order) to a network byte order (big-endian). This is useful when working with network protocols, where data needs to be in network byte order for proper transmission and interpretation.
Syntax
::htonl(int hostlong) -> long
Options/Flags
None.
Examples
Example 1: Convert a host byte order integer to network byte order.
#include <netinet/in.h>
int main() {
uint32_t host_long = 0x12345678;
uint32_t network_long = htonl(host_long);
printf("Host byte order: 0x%x\n", host_long);
printf("Network byte order: 0x%x\n", network_long);
return 0;
}
Output:
Host byte order: 0x12345678
Network byte order: 0x78563412
Common Issues
None.
Integration
The function::htonl
function can be used in conjunction with the function::ntohl
function to convert between host and network byte orders. This is particularly useful when working with network protocols that use big-endian byte ordering, such as TCP/IP.
Related Commands
function::ntohl
: Converts a network byte order integer to host byte order.function::htons
: Converts a 16-bit integer from host byte order to network byte order.function::ntohs
: Converts a 16-bit integer from network byte order to host byte order.