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  • Extracting IP Address and Port Info from sockaddr_storage
    I already know how to use inet_ntop and the sockaddr struct I've connected with and received from to print out the ip, but it returns a string that's not in the format I want For instance: string1 = inet_ntop(their_addr ss_family,get_in_addr( (struct sockaddr *) their_addr),s, sizeof s);
  • Getting IPV4 address from a sockaddr structure - Stack Overflow
    inet_ntoa() works for IPv4; inet_ntop() works for both IPv4 and IPv6 Given an input struct sockaddr *res, here are two snippets of code (tested on macOS):
  • Reasoning behind C sockets sockaddr and sockaddr_storage
    Functions that expect a pointer to struct sockaddr probably typecast the pointer you send them to sockaddr when you send them a pointer to struct sockaddr_storage In that way, they access it as if it was a struct sockaddr struct sockaddr_storage is designed to fit in both a struct sockaddr_in and struct sockaddr_in6
  • c++ - How to fill sockaddr_storage? - Stack Overflow
    If for example your sin_family is AF_INET6, you can cast the sockaddr_storage pointer to a sockaddr_in6 pointer and then fill in whatever you need to It is just a general socket address holding structure, big enough to hold either struct sockaddr_in or struct sockaddr_in6 data or any future sockaddr_xxx
  • How to retrieve IP and port from a `sockaddr_storage` instance?
    The issue lies in the fact that you aren't setting the ss_family field of the sockaddr_storage structure To fix this, you need to specify the ss_family value in the sockaddr_storage as follows: sockaddr_storage address; address ss_family = AF_INET;
  • Setting IPv4 IPv6 address and port to a sockaddr_storage structure
    struct sockaddr_storage is of a size and layout allowing it to be cast into any of the sockaddr variants, all of which share a common header re: passing a string as the port, I wouldn't bother, but it's your code (also, fixed typo, getaddrinfo was meant to be the buffer)
  • sockets - API using sockaddr_storage - Stack Overflow
    The CSocketAddress class is backed by a union of {sockaddr, sockaddr_in, sockaddr_in6} and can be constructed with a sockaddr_storage If I had known about sockaddr_storage before I had started this class, I would have used that instead of the union thing In any case, it allows me to write code as follows:
  • retrieving ip and port from a sockaddr_storage - Stack Overflow
    A better approach would be to pass the pointer to getnameinfo with the NI_NUMERICHOST and NI_NUMERICSERV flags to get a string representation of the address and port This has the advantage that it supports both IPv4 and IPv6 with no additional code, and in theory supports all future address types too
  • Safely converting from struct sockaddr to struct sockaddr_storage
    struct sockaddr_storage *input_address_storage = (struct sockaddr_storage *) input_address; struct sockaddr_storage result = [UtilityClass performSomeOperation: *input_address_storage]; At first I thought the cast in the first line was safe, but then in the second line I need to dereference that pointer, which seems like it may be wrong





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