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By Michael J. Donahoo, Kenneth L. Calvert
TCP/IP Sockets in C: useful advisor for Programmers, 2nd version is a short and cheap technique to achieve the data and talents had to strengthen refined and strong web-based functions. The book's concentrated, tutorial-based method permits the reader to grasp the projects and methods necessary to nearly all client-server initiatives utilizing sockets in C. This variation has been improved to incorporate new developments similar to help for IPv6 in addition to specified protecting programming strategies.
If you software utilizing Java, make sure to try out this book's significant other, TCP/IP Sockets in Java: useful advisor for Programmers, 2nd Edition.
• contains thoroughly new and extended sections that handle the IPv6 community setting, protective programming, and the select() procedure name, thereby permitting the reader to application according to the most up-tp-date criteria for internetworking.
• Streamlined and concise tutelage along side line-by-line code remark permits readers to speedy software web-based purposes with no need to go through unrelated and discursive networking tenets.
• offers the reader entry to on-line resource code, which the can then be used to without delay enforce sockets programming tactics.
Read or Download TCP/IP Sockets in C: Practical Guide for Programmers (2nd Edition) (Morgan Kaufmann Practical Guides) PDF
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Additional resources for TCP/IP Sockets in C: Practical Guide for Programmers (2nd Edition) (Morgan Kaufmann Practical Guides)
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AI_PASSIVE If hostStr is NULL when this flag is set, any returned addrinfos will have their addresses set to the appropriate “any” address constant—inaddr_any (IPv4) or in6addr_any_init (IPv6). AI_CANONNAME Just as one name can resolve to many numeric addresses, multiple names can resolve to the same IP address. However, one name is usually defined to be the official (“canonical”) name. By setting this flag in ai_flags, we instruct getaddrinfo() to return a pointer to the canonical name (if it exists) in the ai_canonname field of the first struct addrinfo of the linked list.
Thus, a client must call bind() before calling connect() if it is going to use it. You can initialize a in6_addr structure to the wildcard address with in6addr_any_init; however, this special constant may only be used as an “initializer” in a declaration. Note well that while inaddr_any is defined to be in host byte order and, consequently, must be converted to network byte order with htonl() before being used as an argument to bind(), in6addr_any and in6addr_any_init are already in network byte order.
In this section, we describe the data structures used as containers for this information by the Sockets API. , AF_INET) // Family-specific address information 24 Chapter 2: Basic TCP Sockets The first part of this address structure defines the address family—the space to which the address belongs. For our purposes, we will always use the system-defined constants af_inet and af_inet6, which specify the Internet address families for IPv4 and IPv6, respectively. The second part is a blob of bits whose exact form depends on the address family.