September 2001
Intermediate to advanced
400 pages
11h 23m
English
Content preview from Palm OS Network ProgrammingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Chapter 9. Exchanging Data
Chapter 8 discusses how to connect to a remote host on the network. This chapter is about exchanging data across a socket connection, which is largely what the Net is all about. Everything else is just infrastructure and protocols that you can generally ignore when developing Network Applications.
The Network Library provides support for exchanging data with a remote host either as “streams” of incoming or outgoing data, or individual data packets. In this chapter, we explore streams of data. Streams are based on the TCP protocol, packets are supported by the UDP protocol. We cover TCP streams in this chapter. UDP and datagrams are discussed in Chapter 13.
We explore the File Transfer Protocol (FTP) as an example of sending and receiving data. FTP allows clients to store and retrieve files from a file server across a TCP/IP network. In this chapter, we discuss the logistics of logging in and out from an FTP server.
Streaming Data Exchanges
TCP and the Sockets API provide a simple yet powerful interface for exchanging data. TCP Socket connections present data as a stream, where bytes flow in at one end and flow out at the other in the same order, like box cars on a train going through a tunnel.
Sending Data
The TCP layer maintains a set of buffers for each socket. When an application sends data, the data is copied to the outbound buffers and control returns to the application.
The protocol stack is an operating system service that runs on its own thread. ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.