1, chat? QQapp wechat app, etc.
Both parties use the same chat tool. You can use chat tools to send pictures.
2, the network disk Baidu cloud app? wait for
Sharing files with the network disk is suitable for the case of large files or more files, and uploading files to the network disk through the client of the network disk. After the file is uploaded, you can share the file * * *, and then a sharing link will be generated. If necessary, you can set a password for the shared file.
3、otoswipe ? app
Install fotoswipe on both mobile phones, then select the photo of the file you want to transfer, click Send, and then enter the corresponding transfer code on the other mobile phone, and the file will be transferred, which can be said to be very convenient.
4. Fast Tooth/Eggplant Express app
The principle of these two softwares is similar, that is, using WiFi to transfer files. Generally speaking, one mobile phone is used to open the hotspot, the other mobile phone is connected to the hotspot, and then the fast tooth or eggplant is used for transmission.
Extended data
There are three working modes of file transmission, namely, information flow mode, compression mode and information block mode.
① Information flow mode transmits files as byte streams. A file can be divided into several logical records consisting of a series of logical units in bytes or machine word length. At the end of a record or a file, there are "end" signs such as "end of record" or "end of file". The "end" flag consists of two bytes. The first byte is the "escape" byte, and the second byte is the corresponding "end" byte. If the data bytes in the file are exactly the same as the "escaped" bytes, it will be treated as character filling. That is to say, the sender sends an extra "escape" byte before the data byte, and the receiver removes one when it encounters two consecutive "escape" bytes, so as to achieve transparent data transmission.
② The compression method is also to express the file as a byte sequence for transmission, but compress the repeated bytes (such as blank characters) to improve the transmission efficiency. Therefore, this byte stream is composed of three components: conventional data, compressed data and control information. Each component is preceded by a byte indicating the relevant information. Print files in this way.
(3) The information block mode represents the file as a series of information blocks for transmission. Each block is preceded by a block header indicating the length of the information block.
Virtual file concept In computer systems, file formats and data representations are different, such as different character sets, codes and machine word lengths. In order to keep the semantics of data unchanged when transmitting files, corresponding transformations are needed. In order to reduce the number of conversion software, the concept of virtual file is introduced. Define the same virtual file structure and virtual file transmission system within the network. Develop a standard logical file structure and data representation. When transmitting files, each host should convert its own file data into a standard form that can be transmitted on the network. And the destination host converts it into its own local form when receiving it. Thus, the incompatibility between different file management systems is solved.
Baidu Encyclopedia-File Transfer