From the course: Network Programming in C: Develop Reliable Client/Server Applications
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Obtain the client's address - C Tutorial
From the course: Network Programming in C: Develop Reliable Client/Server Applications
Obtain the client's address
- [Instructor] With caller ID, you know, who's calling you. Their name appears on the smartphone screen before you answer. A server can also ID the caller obtaining their IP address when you use the getnameinfo function. This function obtains the host name and service name for a connection. The address information is held in a sockaddr structure which is what a server uses to connect with a client. The function obtains two strings and their lengths, one for the host name and a second for the service name. This function has a whopping seven arguments: the address of a sockaddr structure to hold the client's address, the client's address size, a character buffer to store the host or name, the character buffer size, a character buffer to store the service name, the service name buffer size, and a flags value. They getnameinfo function returns 0 upon success or an error value otherwise. This function requires including the…
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