I. Introduction.
In today's rapid development of network technology, IP address and **IP have become an indispensable concept in our daily life. But many people may still have vague definitions and distinctions between them. This article will delve into the intrinsic connection and difference between IP addresses and IPs, and help you understand their differences more intuitively through practical examples.
2. IP address.
1. IP address definition.
An IP address, or Internet Protocol address, is a unique identifier assigned to each host on the network. It consists of four values, each between 0-255, separated by dotsxxx.xxx.xxx.xxx
2. IP address classification.
Depending on the IP address, IP addresses can be divided into five categories, which are Class A, Class B, Class C, Class D, and Class E. Among them, the commonly used are A, B, and C.
3. **IP
1. Definition of IP.
An IP, also known as a server, is a type of server that can make network requests on behalf of other hosts. When a host sends a request through the ** server, the server sends the request to the destination server on behalf of the host and returns the result to the host.
2. The role of IP.
1) Privacy: Through server access, the real IP address can be hidden to protect the user's privacy and security.
2) Breach Access Restrictions: In some cases, direct access to some** may be restricted. Through the server, it is possible to bypass these restrictions and access the blocked server.
3) Accelerated Web Access: The server can cache web page content, reducing the number of direct visits, thereby increasing the speed of web access.
4. The difference between IP address and **IP.
1. Scope of action.
An IP address is a unique identifier for each host and is used to locate and identify the host in the network. On the other hand, IP is a service that is used to make network requests on behalf of other hosts, and its scope is much larger.
2. Usage scenarios.
IP address is the basis of network communication, and any host that accesses the Internet needs a unique IP address. **IP is often used in special situations such as where privacy needs to be protected, access restrictions are broken, or network access is accelerated.
3. Variability.
The IP address is fixed and cannot be changed once assigned to the host. The **IP can be changed at any time, and the user can choose a different **IP according to their needs.
5. Practical application examples.
In order to understand the difference between IP address and IP address more intuitively, the following will be demonstrated through Python.
1. Obtain the IP address of the machine
Using Python's socket module makes it easy to get the IP address of the machine:
python reproduction**.
The above ** obtains the native IP address by creating a UDP socket and trying to communicate with Google public DNS on its local port. If the connection is successful, the local IP address assigned to that socket will be returned.
If an error occurs (e.g. network unavailable), the local loopback address (127.) is returned0.0.1）。Finally close the socket and return the IP address found. This is an easy way to get the public IP address of your local computer. Note: This method can only obtain public IP addresses, not private IP addresses.
In some cases, the local computer may have multiple network interfaces, such as wired and wireless, so this method may return the wrong IP address. If you need to get the IP addresses of all network interfaces, you can use the if nameindex() function in the socket module of Python to get the information about all network interfaces.
2. Use **ip:
The use of IP usually involves setting up HTTP or SOCKS. Here's an example of using the Python requests library to access via **:
python reproduction**.
In the above, we have created a dictionary called Proxies that contains the IP addresses and ports for HTTP and HTTPS. We then use the get method of the requests library to access a ** and pass it through the argumentsproxiesSpecify the ** to use. Finally, we print out the content of the response.
6. Summary. Through the above analysis, we can see that although IP addresses and **IP are both related to network communication, they have significant differences in terms of scope, usage scenarios, and variability.
IP address is the basis of network communication, and each host needs a unique IP address for location and identification. On the other hand, IP is a service that is used to make network requests on behalf of other hosts, and its scope is broader and can be used in a variety of scenarios, such as protecting privacy, breaking access restrictions, or accelerating network access. In practice, we can use Python to get the native IP address and use the IP to make network requests.
With the continuous development of network technology, the application scenarios of IP addresses and IPs will become more extensive and complex. Hopefully, this article has been helpful in your understanding and has sparked your interest in exploring web technologies further.