WO2018036133A1

WO2018036133A1 - File download method and device

Info

Publication number: WO2018036133A1
Application number: PCT/CN2017/075606
Authority: WO
Inventors: 艾东梅
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-08-24
Filing date: 2017-03-03
Publication date: 2018-03-01
Also published as: CN107786583A

Abstract

Provided in the present disclosure are a file download method and device. The file download method comprises: sending to a server a download request; receiving an identifier returned by the server according to the download request, the identifier indicating whether multi-thread download is supported for a file to be downloaded; and if the identifier returned by the server indicates that multi-thread download is supported for the file to be downloaded, then initiating multiple threads to download the file to be downloaded. The file download method provided in the present disclosure reduces a download time of a file to be downloaded, and reduces waste caused by idle thread resources.

Description

File downloading method and device

Technical field

The present disclosure relates to the field of network communication technologies, and in particular, to a file download method and apparatus.

Background technique

In the actual project, it was found that downloading files using the native download technology of the android operating system is difficult to satisfy the user in terms of speed and performance.

At present, there are three main types of Android mainstream download methods that are used more:

(1), file stream read and write mode download, connect URL (uniform resource locator) InputStream (input stream) while reading data, while writing to Android's local memory file; (2), with Android's own DownloadManager (Download Manager) to achieve download; (3), multi-threaded download technology.

The main shortcomings of these three mainstream download methods are as follows:

(1) The method of downloading by means of file stream reading and writing, the downloading speed is very slow, takes a long time, is not suitable for downloading large files, and is prone to ANR (application no response) phenomenon;

(2), DownloadManager (Download Manager) appears in API9 (application program interface) and later Android version, the download principle is simple, but there are also problems with slow download speed and low performance;

(3) Multi-threaded downloading technology is an improvement on the first two methods. For a download task, segment downloading is performed, and multiple segments are separately downloaded by each thread, and then restored to a complete file, usually to be downloaded. The ratio of the overall file size to the total number of threads is expressed as the amount of data that a single thread needs to download to determine the workload of each thread.

The disadvantage of this scheme is that it is possible that the file length is not enough to be equally distributed to each thread. Some threads will have heavy tasks and long execution time, resulting in a long overall download time. It may also occur because the execution speed of each thread is not Equal, some threads are very fast, have been executed, but need to wait for the slowest thread, in the actual project has also encountered a certain thread due to stuck or suspended animation, the file has been unable to download completed The situation makes the overall download time prolonged, the download speed is slow, and even the download task cannot be completed.

Summary of the invention

The technical problem to be solved by the embodiments of the present disclosure is to provide a file downloading method and apparatus for reducing file downloading time, increasing file downloading speed, and maximizing avoiding file downloading failure due to problems of the multi-threaded downloading technology itself.

To solve the above technical problem, a file downloading method provided by an embodiment of the present disclosure includes:

Send a download request to the server;

Receiving, by the server, whether the file to be downloaded returned according to the download request supports an identifier of the multi-thread download;

When the identifier returned by the server indicates that the file to be downloaded supports multi-thread downloading, start multi-threaded Read the download file for download.

In one embodiment, the step of sending a download request to the server includes:

A hypertext transfer protocol http request is sent to the server according to the uniform resource locator URL of the file to be downloaded.

In an embodiment, the step of receiving, by the receiving server, whether the file to be downloaded returned by the download request supports the identifier of the multi-thread download comprises:

Receiving a response message returned by the server according to the download request;

From the packet header field of the response message, an identifier of whether the file to be downloaded supports multi-threaded download is obtained.

In an embodiment, the data packet header field further includes: a length of the file to be downloaded; the method further includes:

Obtaining the length of the file to be downloaded from the packet header field of the response message.

In an embodiment, when the identifier returned by the server indicates that the file to be downloaded supports multi-thread downloading, the step of starting multi-threading to download the file to be downloaded includes:

Determining, according to the length of the file to be downloaded, a number of threads to be started and a size of a segment to be downloaded by each thread;

Depending on the size of the segment to be downloaded by each thread, multiple threads concurrently send a download request to the server;

Obtaining data content of each download segment returned by the server according to the download request of the plurality of threads.

In an embodiment, after obtaining the data content of each download segment returned by the server according to the download request of the multiple threads, the method further includes:

The data content of the respective downloaded segments is written into a file storage system.

In an embodiment, the obtaining, by the server, the data content of each download segment returned according to the download request of the multiple threads further includes:

When the remaining download amount of the file to be downloaded is greater than a preset threshold, and at least one of the plurality of threads completes the download segment corresponding to the thread and transitions to the idle state, the thread corresponding to the thread that has not completed the download task in the plurality of threads Downloading at least a portion of the segment, the thread assigned to the idle state to download, and continuing to send a download request to the server by the idle state thread;

Obtaining, by the server, the data content of each download segment returned according to the download request of the thread that has not completed the download task and the download request sent by the idle state thread.

In an embodiment, the step of allocating at least a part of the to-be-downloaded segment corresponding to the thread that does not complete the download task in the plurality of threads to the idle state thread for downloading includes:

When BCount>FCount, it is determined that half of the respective segments to be downloaded of the Fcount threads in the plurality of threads that have not completed the download task are respectively allocated to the Fcount idle state threads for downloading, wherein BCount is in multiple threads. The total number of threads that have not completed the download task; FCount is the total number of threads in the idle state; and the remaining amount of the segments to be downloaded of the FCount uncompleted download task is the segment to be downloaded in the thread of the BCount uncompleted download task The first remaining FCount threads that have not completed the download task;

When BCount=FCount, BCount will not complete half of the remaining amount of the segment to be downloaded of the thread of the download task, Threads assigned to FCount idle states for download;

When BCount<FCount, the remaining amount of the segment to be downloaded of the thread whose BCount has not completed the download task is equally divided into BCount+FCount shares, which are respectively allocated to the BCount uncompleted download task and the FCount idle state threads. download.

According to another aspect of the present disclosure, a file downloading apparatus is provided, the apparatus comprising:

a sending module, configured to send a download request to the server;

a receiving module, configured to receive, by the server, whether the file to be downloaded returned according to the download request supports an identifier of the multi-thread download;

And downloading, when the identifier returned by the server indicates that the file to be downloaded supports multi-thread downloading, starting multi-threading to download the file to be downloaded.

In an embodiment, the sending module is specifically configured to:

In an embodiment, the receiving module comprises:

a receiving submodule, configured to receive a response message returned by the server according to the download request;

The first obtaining submodule is configured to obtain, from a packet header field of the response message, an identifier of whether the file to be downloaded supports multi-thread downloading.

In an embodiment, the receiving module further includes:

The second obtaining submodule is configured to obtain the length of the file to be downloaded from the packet header field of the response message.

In one embodiment, the download module includes:

Determining a sub-module, determining, according to the length of the file to be downloaded, a number of threads to be started and a size of a segment to be downloaded by each thread;

a first sending submodule, according to the size of the segment to be downloaded by each thread, the plurality of threads concurrently sending a download request to the server;

The data content acquisition sub-module obtains data content of each download segment returned by the server according to the download request of the multiple threads.

In an embodiment, the downloading module further includes:

The storage submodule is configured to, after obtaining the data content of each download segment returned by the server according to the download request of each thread, write the data content of each download segment into the file storage system.

In an embodiment, the data content acquisition submodule includes:

The download unit is allocated, and the remaining download amount of the file to be downloaded is set to be greater than a preset threshold, and at least one of the plurality of threads completes the download segment corresponding to the thread, and when the idle state is changed, the multiple threads are not completed. Downloading at least a portion of the segment to be downloaded corresponding to the thread of the task, assigning the thread to the idle state to download, and continuing to send a download request to the server by the idle state thread;

The first obtaining unit is configured to obtain data content of each download segment returned by the server according to the download request of the thread that has not completed the download task and the download request sent by the thread in the idle state.

In an embodiment, the allocating download unit comprises:

The first allocation download subunit is configured to determine, when BCount>FCount, one half of the respective segments to be downloaded of the Fcount threads in the threads of the plurality of incomplete download tasks, respectively allocated to the Fcount idle state threads for downloading , wherein BCount is the total number of threads in the plurality of threads that have not completed the download task; FCount is the total number of threads in the idle state; and the remaining amount of the segments to be downloaded of the FCount uncompleted download task is BCount. The thread of the pre-FCount uncompleted download task with the largest remaining amount of the clip to be downloaded in the thread completing the download task;

a second allocation download subunit, configured to allocate, when BCount=FCount, half of the remaining amount of the segment to be downloaded of the thread whose BCount has not completed the download task, to the FCount idle state thread for downloading;

The third allocation download subunit is set to be the remaining amount of the segment to be downloaded of the thread whose BCount has not completed the download task when BCount<FCount is divided into BCount+FCount shares, respectively allocated to the BCount uncompleted download task thread and FCount of the idle state threads are downloaded.

Compared with the prior art, the file downloading method provided by the embodiment of the present disclosure has at least the following beneficial effects:

By assigning at least a part of the to-be-downloaded segment of the thread that has not completed the download task to the thread in the idle state, the thread resources in the idle state are reasonably utilized, thereby avoiding the phenomenon that the idleness of each thread is unequal, and the downloading is improved. The download speed of the file reduces the download time of the file to be downloaded; at the same time, the resource consumption is reduced, and the resource is optimally utilized.

DRAWINGS

1 is a schematic flowchart of a file downloading method according to an embodiment of the present disclosure;

2 is a schematic flowchart of a specific implementation process of a file downloading method according to an embodiment of the present disclosure;

FIG. 3 is a schematic block diagram of a file downloading apparatus according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of a specific implementation of a file downloading apparatus according to an embodiment of the present disclosure;

detailed description

The technical problems, the technical solutions, and the advantages of the present invention will be more clearly described in conjunction with the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to assist in a comprehensive understanding of the embodiments of the present disclosure. It will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the disclosure. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

Referring to FIG. 1, the present disclosure provides a file downloading method, including the following steps:

Step 1: Send a download request to the server;

Step 2: The identifier of the file to be downloaded returned by the server according to the download request supports multi-thread downloading;

Step 3: When the identifier returned by the server indicates that the file to be downloaded supports multi-thread downloading, start more The thread downloads the file to be downloaded.

In this embodiment, the download mode of the file to be downloaded is determined by the identifier of the file to be downloaded returned by the server, and the multi-thread download mode can reduce the time for downloading the file to be downloaded. Allocating at least a part of the to-be-downloaded segment of the thread that has not completed the download task to the thread in the idle state, so that the thread resources in the idle state are reasonably utilized, thereby avoiding the phenomenon that the idleness of each thread is uneven, and the file to be downloaded is improved. The download speed reduces the download time of the files to be downloaded; at the same time, the resource consumption is reduced and the resources are optimally utilized.

Referring to FIG. 2, a specific implementation process of the foregoing method shown in FIG. 1 includes:

Step 200: Send a download request to the server; specifically, the hypertext transfer protocol http request may be sent to the server according to the uniform resource locator URL of the file to be downloaded;

Step 201: Receive a response message returned by the server according to the download request.

Step 202: Obtain, from the packet header field of the response message, whether the file to be downloaded supports the identifier of the multi-thread download, and further, obtain the length of the file to be downloaded from the packet header field of the response message.

Step 203: Determine, according to the identifier returned by the server, whether the file to be downloaded supports multi-thread downloading;

Step 204: Determine, according to the identifier returned by the server, that the file to be downloaded does not support multi-thread downloading, and start a single-thread downloading of the file to be downloaded;

Step 205: When the identifier returned by the server determines that the file to be downloaded supports multi-thread downloading, determine the number of threads to be started and the size of the segment to be downloaded by each thread according to the length of the file to be downloaded;

Step 206: According to the size of the fragment to be downloaded by each thread, multiple threads concurrently send a download request to the server; multiple threads concurrently and independently send download requests to the server without mutual interference; and, each thread The download request initiated to the server is a http download request;

Step 207: Determine whether the remaining amount of the file to be downloaded is greater than a preset threshold; wherein the preset threshold is customized by the system;

Step 208: When the remaining download quantity of the file to be downloaded is less than or equal to the preset threshold, the thread that has not completed the download task continues to download the corresponding task to be downloaded.

Step 209: When the remaining download amount of the file to be downloaded is greater than a preset threshold, determine whether at least one of the plurality of threads completes the download segment corresponding to the thread and turns to an idle state; when it is determined that no thread is completed in the multiple threads When the corresponding download segment of the thread is converted to the idle state, go to step 208;

Step 210: When the remaining download amount of the file to be downloaded is greater than a preset threshold and at least one of the plurality of threads completes the download segment corresponding to the thread and transitions to the idle state, determining the total number of threads in the plurality of threads that have not completed the download task Whether BCount is greater than the total number of threads in the idle state FCount;

Step 211: When the remaining download quantity of the file to be downloaded is greater than a preset threshold and the total number of threads FCount of the plurality of threads that have not completed the download task is greater than the total number of threads FCount of the idle state, determining a plurality of the threads of the uncompleted download task Half of the respective segments to be downloaded of the Fcount threads are respectively allocated to the Fcount idle state threads for downloading, wherein BCount is the total number of threads in the plurality of threads that have not completed the download task; FCount is the total number of threads in the idle state. And the remaining amount of the segments to be downloaded of the thread of the FCount unfinished download task is BCount The thread of the pre-FCount uncompleted download task with the largest remaining amount of the clip to be downloaded in the thread completing the download task;

Step 212: When the remaining download amount of the file to be downloaded is greater than a preset threshold and the total number of threads FCount in the plurality of threads that have not completed the download task is not greater than the total number of threads FCount in the idle state, determine the total number of threads in the plurality of threads that have not completed the download task. Whether FCount is equal to the total number of threads in the idle state FCount;

Step 213: When the remaining download amount of the file to be downloaded is greater than a preset threshold and the total number of threads FCount in the plurality of threads that have not completed the download task is equal to the total number of threads FCount in the idle state, the remaining segments of the thread whose BCount has not completed the download task remain. Half of the amount is allocated to the FCount idle state thread for downloading;

Step 214: When the remaining download amount of the file to be downloaded is greater than a preset threshold and the total number of threads FCount of the uncompleted download task in the plurality of threads is smaller than the total number of threads FCount in the idle state, when the remaining download amount of the file to be downloaded is greater than a preset threshold and When the total number of threads in the multiple threads that have not completed the download task is smaller than the total number of threads in the idle state, FCount, the remaining amount of the segments to be downloaded of the thread whose BCount has not completed the download task is equally divided into BCount+FCount shares, which are respectively assigned to BCount. The thread completing the download task and the thread of the FCount idle state are downloaded;

Step 215: Obtain a download request of the thread according to the thread that has not completed the download task in step 208, and a download request of the thread of the Bcount uncompleted download task in

steps

211, 212, 213, and 214, and a thread that is in the Fcount idle state. Download the data content of each download segment returned by the request;

Step 216: Write the obtained data content of each downloaded segment into the file storage system.

In this embodiment of the present disclosure, in order to maximize the download speed of the download task and reduce the time required for downloading, when it is determined that the remaining download amount of the file to be downloaded is less than or equal to the preset threshold, the download task is not completed. The thread continues to download the corresponding clip to be downloaded.

When it is determined that the remaining download amount of the file to be downloaded is greater than the preset threshold and the total number of threads that have not completed the download task is greater than the total number of threads in the idle state, by assigning a part of the to-be-downloaded segment of the uncompleted download task to the idle state thread, not only Resource utilization for threads in idle state is achieved, while reducing the required download time for files to be downloaded.

In the present disclosure, the system first presets a minimum preset threshold (for example, 10%). As the remaining workload of the file to be downloaded decreases, the system may decrease the preset threshold according to the remaining workload of the file to be downloaded, for example, the system. The preset threshold for determining the file to be downloaded is set to 80% for the first time, and the preset threshold for determining the file to be downloaded is set to 70% for the second time. When the system determines for the first time that the remaining download amount of the file to be downloaded is less than or equal to the first When the preset threshold is 80%, the system presets the second preset threshold, and compares the remaining download amount of the downloaded file with the second preset threshold. When the second judgment is performed, it is determined that the remaining workload of the file to be downloaded is smaller than Or equal to 70%, the system again reduces the threshold value compared with the remaining workload of the file to be downloaded by 60%. At this time, if the system judges for the third time, it determines that the remaining workload of the file to be downloaded is greater than 60%, the system Repeating the workflow described in the above steps 209 to 215 again, when it is determined that the remaining download amount of the file to be downloaded is less than or equal to 10% of the system preset minimum preset threshold, Workflow is repeated according to step 208 until the end of the download file to be downloaded.

The system determines the download status of each thread according to the length of the data content of the length of the downloaded segment downloaded by each thread written in the file storage system, and updates the download amount of the file to be downloaded in real time.

The file downloading method provided by the present disclosure determines the downloading manner of the file to be downloaded according to the identifier of the file to be downloaded returned by the server, and avoids the situation that the file to be downloaded cannot be downloaded due to the wrong download mode.

When the multi-threaded downloading of the downloaded file is performed, the resource is utilized by the idle state of the downloaded task, and at least a part of the downloaded segment corresponding to the thread that has not completed the downloading task is allocated to the idle state thread for downloading, and The process is cyclically executed according to the algorithm described in the text, thereby greatly reducing the download time of the file to be downloaded, increasing the download speed, and optimizing the utilization of idle thread resources.

As shown in FIG. 3, according to another aspect of the present disclosure, the present disclosure further provides a file downloading apparatus, the apparatus comprising:

Sending module 1, configured to send a download request to the server;

The receiving module 2 is configured to receive, by the server, whether the file to be downloaded returned according to the download request supports an identifier of the multi-thread download;

The downloading module 3, when the identifier indicates that the file to be downloaded supports multi-thread downloading, starts multi-threading to download the file to be downloaded.

Further, the sending module is specifically configured to:

Further, the receiving module 2 includes:

The receiving submodule 21 is configured to receive a response message returned by the server according to the download request;

The first obtaining sub-module 22 is configured to obtain, from the packet header field of the response message, whether an identifier of the file to be downloaded supports multi-thread downloading.

Further, the receiving module 2 further includes:

The second obtaining submodule 23 is configured to obtain the length of the file to be downloaded from the packet header field of the response message.

Further, the download module 3 includes:

Determining the sub-module 31, determining, according to the length of the file to be downloaded, the number of threads to be started and the size of the segment to be downloaded by each thread;

The first sending sub-module 32, according to the size of the segment to be downloaded by each thread, multiple threads concurrently send a download request to the server;

The data content obtaining sub-module 33 obtains data content of each download segment returned by the server according to the download request of the plurality of threads.

Further, the downloading module further includes:

The storage sub-module 34 is configured to, after obtaining the data content of each download segment returned by the server according to the download request of each thread, write the data content of each download segment into the file storage system.

Further, the data content obtaining submodule 33 includes:

The distribution download unit 331 is configured to: when the remaining download amount of the file to be downloaded is greater than a preset threshold, and at least one of the plurality of threads completes the download segment corresponding to the thread, and transitions to the idle state, the plurality of threads are not At least a portion of the segment to be downloaded corresponding to the thread completing the download task, assigned to the idle state thread, and by the idle state Thread continues to send a download request to the server;

The first obtaining unit 332 is configured to obtain data content of each download segment returned by the server according to the download request of the thread that has not completed the download task and the download request sent by the thread in the idle state.

Further, the distribution download unit 331 includes:

The first allocation download sub-unit 3311 is configured to determine, when BCount>FCount, half of the respective segments to be downloaded of the Fcount threads in the plurality of threads that have not completed the download task, and respectively allocate them to the Fcount idle state threads. Download, wherein BCount is the total number of threads in the plurality of threads that have not completed the download task; FCount is the total number of threads in the idle state; and the remaining amount of the segments to be downloaded of the FCount incomplete download task is BCount The thread of the first FCount uncompleted download task with the largest remaining number of segments to be downloaded in the thread that has not completed the download task;

The second allocation download sub-unit 3312 is configured to allocate, when BCount=FCount, half of the remaining amount of the segment to be downloaded of the thread whose BCount has not completed the download task, to the FCount idle state thread for downloading;

The third allocation download sub-unit 3313 is configured to divide the remaining amount of the to-be-downloaded segment of the thread whose BCount has not completed the download task into BCount+FCount shares when BCount<FCount, respectively, and allocate the BCount to the uncompleted download task. And FCount the idle state of the thread to download.

The device for downloading the file provided by the present disclosure can also allocate at least a part of the to-be-downloaded segment corresponding to the thread that has not completed the download task to the idle state thread, thereby improving the download speed of the file to be downloaded, and maximizing the utilization of the resource. .

The above is a preferred embodiment of the present disclosure, and it should be noted that those skilled in the art can also make several improvements and refinements without departing from the principles of the present disclosure. It should also be considered as the scope of protection of the present disclosure.

Industrial applicability

The file downloading method provided by the embodiment of the present disclosure is applicable to a device or a terminal having a file downloading function, and is configured to be in an idle state by allocating at least a part of a segment of a thread to be downloaded of a thread that has not completed the download task to a thread in an idle state. The thread resources are reasonably utilized to avoid the phenomenon of idleness and unequality of each thread, improve the download speed of the files to be downloaded, and reduce the downloading time of the files to be downloaded; at the same time, the resource consumption is reduced, and the resources are obtained the most. Optimized use.

Claims

A file download method, including:

Send a download request to the server;

Receiving, by the server, whether the file to be downloaded returned according to the download request supports an identifier of the multi-thread download;

When the identifier returned by the server indicates that the file to be downloaded supports multi-thread downloading, the multi-thread is started to download the file to be downloaded.
The file downloading method according to claim 1, wherein said step of transmitting a download request to the server comprises:

A hypertext transfer protocol http request is sent to the server according to the uniform resource locator URL of the file to be downloaded.
The file downloading method according to claim 1, wherein the step of receiving, by the receiving server, whether the file to be downloaded returned according to the download request supports the identifier of the multi-thread download comprises:

Receiving a response message returned by the server according to the download request;

From the packet header field of the response message, an identifier of whether the file to be downloaded supports multi-threaded download is obtained.
The file downloading method according to claim 3, wherein the data packet header field further includes: a length of the file to be downloaded; the method further includes:

Obtaining the length of the file to be downloaded from the packet header field of the response message.
The file downloading method according to claim 4, wherein the step of initiating multi-threading to download the file to be downloaded when the identifier returned by the server indicates that the file to be downloaded supports multi-thread downloading comprises:

Determining, according to the length of the file to be downloaded, a number of threads to be started and a size of a segment to be downloaded by each thread;

Depending on the size of the segment to be downloaded by each thread, multiple threads concurrently send a download request to the server;

Obtaining data content of each download segment returned by the server according to the download request of the plurality of threads.
The file downloading method according to claim 5, wherein the obtaining the data content of each download segment returned by the server according to the download request of the plurality of threads further comprises:

The data content of the respective downloaded segments is written into a file storage system.
The file downloading method according to claim 5, wherein the obtaining the data content of each download segment returned by the server according to the download request of the plurality of threads further comprises:

When the remaining download amount of the file to be downloaded is greater than a preset threshold, and at least one of the plurality of threads completes the download segment corresponding to the thread and transitions to the idle state, the thread corresponding to the thread that has not completed the download task in the plurality of threads Downloading at least a portion of the segment, the thread assigned to the idle state to download, and continuing to send a download request to the server by the idle state thread;

Obtaining, by the server, the data content of each download segment returned according to the download request of the thread that has not completed the download task and the download request sent by the idle state thread.
The file downloading method according to claim 7, wherein the step of allocating at least a part of the to-be-downloaded segment corresponding to the thread that has not completed the downloading task to the idle state thread for downloading comprises:

When BCount>FCount, it is determined that half of the respective segments to be downloaded of the Fcount threads in the plurality of threads that have not completed the download task are respectively allocated to the Fcount idle state threads for downloading, wherein BCount is in multiple threads. The total number of threads that have not completed the download task; FCount is the total number of threads in the idle state; and the remaining amount of the segments to be downloaded of the FCount uncompleted download task is the segment to be downloaded in the thread of the BCount uncompleted download task The first remaining FCount threads that have not completed the download task;

When BCount=FCount, half of the remaining amount of the segment to be downloaded of the thread whose BCount has not completed the download task is respectively allocated to the FCount idle state thread for downloading;

When BCount<FCount, the remaining amount of the segment to be downloaded of the thread whose BCount has not completed the download task is equally divided into BCount+FCount shares, which are respectively allocated to the BCount uncompleted download task and the FCount idle state threads. download.
A file downloading device, wherein the device comprises:

a sending module, configured to send a download request to the server;

a receiving module, configured to receive, by the server, whether the file to be downloaded returned according to the download request supports an identifier of the multi-thread download;

And downloading, when the identifier returned by the server indicates that the file to be downloaded supports multi-thread downloading, starting multi-threading to download the file to be downloaded.
The file downloading apparatus according to claim 9, wherein said transmitting module is further configured to:

A hypertext transfer protocol http request is sent to the server according to the uniform resource locator URL of the file to be downloaded.
The file downloading apparatus according to claim 9, wherein the receiving module comprises:

a receiving submodule, configured to receive a response message returned by the server according to the download request;

The first obtaining submodule is configured to obtain, from a packet header field of the response message, an identifier of whether the file to be downloaded supports multi-thread downloading.
The file downloading apparatus according to claim 11, wherein the receiving module further comprises:

The second obtaining submodule is configured to obtain the length of the file to be downloaded from the packet header field of the response message.
The file downloading apparatus according to claim 12, wherein said downloading module comprises:

Determining a sub-module, determining, according to the length of the file to be downloaded, a number of threads to be started and a size of a segment to be downloaded by each thread;

a first sending submodule, according to the size of the segment to be downloaded by each thread, the plurality of threads concurrently sending a download request to the server;

The data content acquisition sub-module obtains data content of each download segment returned by the server according to the download request of the multiple threads.
The file downloading apparatus according to claim 13, wherein the downloading module further comprises:

a storage submodule, configured to obtain each download segment returned by the server according to the download request of each thread After the data content, the data content of each download segment is written into the file storage system.
The file downloading apparatus according to claim 13, wherein the data content obtaining submodule comprises:

The download unit is allocated, and the remaining download amount of the file to be downloaded is set to be greater than a preset threshold, and at least one of the plurality of threads completes the download segment corresponding to the thread, and when the idle state is changed, the multiple threads are not completed. Downloading at least a portion of the segment to be downloaded corresponding to the thread of the task, assigning the thread to the idle state to download, and continuing to send a download request to the server by the idle state thread;

The first obtaining unit is configured to obtain data content of each download segment returned by the server according to the download request of the thread that has not completed the download task and the download request sent by the idle state thread.
The file downloading apparatus according to claim 15, wherein said distribution downloading unit comprises:

The first allocation download subunit is configured to determine, when BCount>FCount, one half of the respective segments to be downloaded of the Fcount threads in the threads of the plurality of incomplete download tasks, respectively allocated to the Fcount idle state threads for downloading , wherein BCount is the total number of threads in the plurality of threads that have not completed the download task; FCount is the total number of threads in the idle state; and the remaining amount of the segments to be downloaded of the FCount uncompleted download task is BCount. The thread of the pre-FCount uncompleted download task with the largest remaining amount of the clip to be downloaded in the thread completing the download task;

a second allocation download subunit, configured to allocate, when BCount=FCount, half of the remaining amount of the segment to be downloaded of the thread whose BCount has not completed the download task, to the FCount idle state thread for downloading;

The third allocation download subunit is set to be the remaining amount of the segment to be downloaded of the thread whose BCount has not completed the download task when BCount<FCount is divided into BCount+FCount shares, respectively allocated to the BCount uncompleted download task thread and FCount of the idle state threads are downloaded.