protocol oriented programming swift

the application: Socket.getservbyname (' ssh ') 22 Socket.getservbyname (' MySQL ') 320W Transport Layer Services:Connection-oriented transport service (TCP protocol): Transmission characteristics: Reliable data transfer: reliability: No disorder, no error, no duplication, no loss Connection and disconnection required before and after data transfer

myself figured out, spent a long time. But then I saw the book "Thinking in Java", which read these concepts. The third step is to learn the characteristics of Java object-oriented programming language such as inheritance, constructors, abstract classes, interfaces, polymorphism of methods, overloads, Overrides, Java exception handling mechanisms. For a person who doesn't have an object-

As we have said before, the sender can send data in one K and one K, while the application at the receiver can extract data in two K and two K, of course, it is also possible to extract 3 K or 6 K data at a time, or extract only a few bytes of data at a time. That is to say, the data seen by the application is a whole, or a stream, the data may be split into many data packets for transmission in the underlying communication, but the number of bytes of a data packet is invisible to the applicatio

Common network application protocols running on top of TCP are HTTP, FTP, SMTP, POP3, IMAP.TCP is the most important transport protocol in the TCP/IP system, and it provides full duplex and reliable delivery service, which is the foundation of most application protocol work.TCP is a kind of connection-oriented, reliable, traffic-layer communication

PrefaceThis article is the beginning of this series, as a mobile developer, the development of the application will inevitably have access to the network, although now there are many open source libraries to help us to easily access the network, but we still have to understand the principle of network access, this is a good developer of the necessary knowledge points. In this article, let's start by understanding the HTTP protocol principle.1.HTTP Int

Android Network Programming (I) HTTP protocol PrinciplePreface This article is the beginning of this series. As a mobile developer, the developed applications will inevitably access the network. Although there are already many open source libraries to help us easily access the network, however, we still need to understand the principle of network access, which is also a required knowledge point for excellen

One. Socket APIThe previous article "--socket Programming based on TCP protocol" http://2627lounuo.blog.51cto.com/10696599/1775559 has spent a lot of time talking about sockets and using basic sockets API needs to be aware of the problem, here will not repeat it. The following is mainly about UDP and TCP in the socket programming differences;1. Create sockand TCP

This blog post is a reading note after learning UNP (UNIX Network programming), for you to review your knowledge later. TCP, UDP overviewIn front of the "Computer Network and TCP/IP" section has introduced a number of TCP, UDP related knowledge TCP/IP (iii): Transport layer TCP and UDP, here is simply a UNIX network programming from the perspective of the TCP, UDP protocol.We all know that UDP lacks rel

, roughly speaking, TCP is the transport layer of the Protocol for data transmission, when we write text messages, SMS window is actually an application, when we send text messages, SMS from the application roll to There is a socket between the transport channel, the application and the transport channel, and without the socket, the application cannot roll the text message to the transport channel. The amount ... Feeling grey is often awkward.If you w

InetAddress class:Represents an IP address in the Internet, example: Packagedemo;Importjava.net.InetAddress;Importjava.net.UnknownHostException; Public classInetaddressdemo { Public Static voidMain (string[] args)throwsunknownhostexception {function1 (); Function2 (); } Public Static voidFunction1 ()throwsunknownhostexception {inetaddress inet=Inetaddress.getlocalhost (); System.out.println (Inet.gethostname ());//Get host name//Output: Desktop-q3o8aeoSystem.out.println (Inet.gethostaddre

[. Net Object-Oriented programming advanced] (9) Serialization (1) binary stream Serialization and binary Serialization [. Net Object-Oriented programming advanced] (9) Serialization (Serialization) (1) binary stream Serialization This section introduces: In. NET programming

processing module changes the name of a variable, the protocol between the two may be broken. this leads to an error in the processing of the credit card module, which leads to an error in the processing of the invoice module. soon, all irrelevant modules in the system may fail. Therefore, I think it is a little dramatic that most programmers are grateful for coupling and encapsulation. coupling is a measure of the degree of dependency between two m

Section 1-Object-oriented programming + ----------------------------------------------------------------------- + | = This article is Haohappy read > | = Notes in the Classes and Objects chapter | = Translation-oriented + personal experiences | = Do not repost it to avoid unnecessary troubles. thank you. | = Thank you for your criticism and hope to make pr

Section 1-Object-oriented programming object-oriented programming is designed to provide solutions for large-scale software projects, especially projects that involve multiple people. when the source code grows to 10 thousand lines or even more lines, every change may lead to unwanted side effects. this happens when th

PHP object-oriented programming. Object-oriented programming is designed to provide solutions for large-scale software projects, especially projects with multi-person cooperation. when the source code grows to 10 thousand lines or even more lines, every change may lead to object-or