lora protocol

TCP vs. UDP differencesTCP---Transmission Control Protocol, providing a connection-oriented, reliable byte-stream service. Before the customer and the server Exchange data with each other, a TCP connection must be established between the two parties before the data can be transferred. TCP provides time-out re-send, discard duplicate data, test data, flow control and other functions to ensure that data can be transmitted from one end to the other.UDP--

Preface: Because OBJECT-C does not support multiple inheritance, it is often replaced with protocol (protocol). The Protocol (protocol) can only define a common set of interfaces, but cannot provide a specific implementation method. That is, it only tells you what to do, but specifically how to do it, it does not care.

Objective-c Protocol (Protocol), objectivecprotocol The Protocol is a list of methods shared by multiple classes. methods listed in the Protocol are not implemented in this class, but are implemented by other classes. To comply with a protocol, a class must implement all met

　TPC/IP Protocol is a Transport layer protocol, which mainly solves how data is transmitted in the network, and HTTP is the application layer protocol, which mainly solves how to wrap the data. regarding the relationship between TCP/IP and HTTP protocol, the network has a relatively easy to understand: "When we transmi

The protocol @protocol in Objective-c, similar to the interface interface in Java, lists the methods that this class does not need to implement, and is implemented by classes that implement this Protocol.1 Declaration Agreement ProtocolFormat:@protocol protocol Name.... Meth

--> 　　核心提示：-->With the development of the IP network to the multi-service network, especially the development of VoIP in recent years, it is inevitable to transmit signaling messages in the IP network. But in the IP network cannot provide high-quality transmission services like mtp3 and ATM, so the ITU-T proposed an improved version of sscop-sscopmce in Multi-link and non-connection environment ), it is used to transmit signaling messages in an IP-based network. However, compared with sscop, ssc

Introduction to HTTPS protocol instances, https protocol instances HTTPS is an SSL-based HTTP protocol, which is simply a secure version of HTTP. Relying on the SSL protocol, the HTTPS protocol can ensure that the entire communication process is encrypted, the key is genera

TCP the difference between protocol and UDP protocol first, let's get this straight. TCP agreements and UCP Agreement and TCP/IP agreement, a lot of people are confused, has always been said TCP/IP Agreement and UDP the difference between the protocols, I think it is not clear from the nature of network communication! the TCP/IP Protocol is a

SIP (Session Initiation Protocol) Conversation Initiation Protocol is an application layer control (signaling) protocol for network telephony and conferencing. It is mainly a multimedia communication protocol based on IP network. It can realize the signaling functions are also using RTP as a media transmission

This paper mainly introduces the implementation of the 802.1Q VLAN protocol in the Ethernet switch, and some basic contents of the 802.1P protocol, details of the implementation of the two Protocols, and reference data of the 802.1Q and 802.1P protocols. First, 802.1Q protocol 802.1Q protocol, that is, Virtual bridge

A host that communicates in the same network (which is not specifically referred to as an Ethernet network) must have the MAC address of the target host to correctly send the data to the target host, so how to know the MAC address of the target host. Can be passed through the ARP protocol. The ARP protocol is used to obtain the corresponding MAC address of the destination IP address, that is, the ARP