inet_addr(3) - Linux manual page

The inet_addr() function converts the Internet host address cp from IPv4 numbers-and-dots notation into binary data in network byte order. If the input is invalid, INADDR_NONE (usually -1) is returned. Use of this function is problematic because -1 is a valid address (255.255.255.255). Avoid its use in favor of inet The inet_addr() function has a dependency on the level of the Enhanced ASCII Extensions. See Enhanced ASCII support for details. Returned value. If successful, inet_addr() returns the Internet address in network byte order. The inet_ntoa function takes an Internet address structure specified by the in parameter and returns a NULL-terminated ASCII string that represents the address in "." (dot) notation as in "192.168.16.0", an example of an IPv4 address in dotted-decimal notation. Value Meaning; AF_INET 2: The Internet Protocol version 4 (IPv4) address family. When this parameter is specified, the pszAddrString parameter must point to a text representation of an IPv4 address and the pAddrBuf parameter returns a pointer to an IN_ADDR structure that represents the IPv4 address.: AF_INET6 23: The Internet Protocol version 6 (IPv6) address family. Unlike inet_aton(3) and inet_addr(3), inet_pton() supports IPv6 addresses. On the other hand, inet_pton () only accepts IPv4 addresses in dotted-decimal notation, whereas inet_aton (3) and inet_addr (3) allow the more general numbers-and-dots notation (hexadecimal and octal number formats, and formats that don't require all four bytes to be 'inet_addr': Use inet_pton() or InetPton() instead or define _WINSOCK_DEPRECATED_NO_WARNINGS. partner.sin_addr.s_addr = inet_addr(ip.c_str()); I attempted to use the functions mentioned but they were undefined. I attempted to define the macro in many different spots but nothing happened. Another thread said that I should include Ws2tcpip.h The ANSI version of this function is always defined as inet_ntop. The pStringBuf parameter is defined to the PWSTR data type. The IN_ADDR structure is defined in the Inaddr.h header file. The IN6_ADDR structure is defined in the In6addr.h header file.

UDPを使う際、inet_addr()でC4996エラーが出るときの対処方法 - …

The inet_addr() function converts the Internet host address cp from IPv4 numbers-and-dots notation into binary data in network byte order. If the input is invalid, INADDR_NONE (usually -1) is returned. Use of this function is problematic because -1 is a valid address (255.255.255.255). Avoid its use in favor of inet_ntoa(), inet_aton() The function inet_aton() is the opposite, converting from a dots-and-numbers string into a in_addr_t (which is the type of the field s_addr in your struct in_addr.) Finally, the function inet_addr() is an older function that does basically the same thing as inet_aton(). It's theoretically deprecated, but you'll see it alot and the police won't 'inet_addr': Use inet_pton() or InetPton() instead or

Program examples on how to use the InetNtop()/inet_ntop

inet_addr interprets a null-terminated character string, pointed to by cp, that represents numbers in the Internet standard dotted decimal notation and returns a corresponding Internet address.The dotted decimal string can contain up to four components. All but the last components are placed in succeeding bytes, beginning with the high-order byte. inet_ntop(3) - Linux man page AF_INET src points to a struct in_addr (in network byte order) which is converted to an IPv4 network address in the dotted-decimal format, "ddd.ddd.ddd.ddd". The buffer dst must be at least INET_ADDRSTRLEN bytes long. AF_INET6