Download BSD Sockets Programming from a Multi-Language Perspective by M. Tim Jones PDF

By M. Tim Jones

ISBN-10: 1584502681

ISBN-13: 9781584502685

BSD Sockets Programming from a Multi-Language standpoint is written for software program builders who have to create quite a few community functions. It starts via detailing the effective and potent makes use of of the BSD Sockets API for networked software improvement in a number of languages. From there the BSD API is roofed intimately and the aim of every functionality and socket choice is pointed out, together with the complicated behavioral side-effects of every. Having an intensive figuring out of those matters and strategies is usually the variation among being a beginner community software developer. Optimizing networked functions and heading off universal pitfalls also are addressed. After the forged foundational assurance of the Sockets API partly I, half II investigates it from quite a few language views. utilizing six diverse languages in all, together with important languages (C), object-oriented languages (Java), and scripting languages (Perl), you study the benefits and drawbacks of every language as they relate to the advance of networked functions and the Sockets API. eventually, partly III, a collection of software program styles is mentioned for every language. styles comprise an easy HTTP server and SMTP patron, and numerous Sockets verbal exchange types (stream, datagram, multicast, and broadcast). those styles can be utilized because the foundation for extra complicated purposes or to offer you a quick-start while construction networked purposes. The styles additionally light up the variations among the community APIs for every language and establish how yes languages make styles easy and others lead them to advanced. The accompanying CD-ROM comprises all the resource code from the booklet, together with the styles special partly III, in addition to open resource interpreters and different instruments.

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At line 19, we attempt to read from the socket using the read call. We specify three parameters, representing our socket endpoint (connectionFd), the buffer for incoming data (timebuffer), and the size of the buffer (maximum amount of data to read, or MAX__BUFFER). The read call returns the number of bytes read from the socket. If a value less than 1 is read, an error has occurred. Succeeding this check, we NULL-terminate our buffer in line 22 and print it in line 23. Our read occurs within a while loop, so we try to read again.

3). 3: MOST COMMON FLAGS FOR THE recv/recvfrom FUNCTIONS Flag Description MSG_OOB Requests out-of-band data from the socket MSG_PEEK Returns data, but doesn’t consume MSG_WAITALL Requests blocking call until all requested data is returned MSG_OOB refers to the request of out-of-band data through the socket. Out-of-band data, otherwise known as expedited data, permits an application to communicate data with higher priority to the peer. MSG_PEEK allows an application to preview the data that’s available in the socket buffer to read, without actually consuming it at the Sockets layer.

The first format, known as little endian, stores the contiguous bytes of a type in memory with the least significant byte (0x04) first and the most significant byte last (0x01). The big endian format stores contiguous bytes in the opposite order; the most significant byte is stored first and the least significant byte is stored last. 2 for a graphical description. 2: Memory storage of little and big endian formats. Although the data contained in the messages uses a format predefined by the applications that use it, the values stored in the packet headers are in big endian format.

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BSD Sockets Programming from a Multi-Language Perspective by M. Tim Jones

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