CN102088460B - Method, device and system for transmitting streaming media data in restricted networks - Google Patents

Abstract

The invention discloses a streaming media data transmission method, device and system in a restricted network, relates to the field of communication technology, can transmit streaming media data to a destination under the condition of limited conditions, has high reliability, and realizes streaming media data Successful transfers in restricted networks. A kind of transmission method of stream media data in the restricted network that the embodiment of the present invention provides, comprises: Internet client encapsulates the User Data Packet Protocol UDP packet of streaming media data into Transmission Control Protocol TCP data stream; The TCP connection established by the server sends the TCP data flow to the Internet server; the Internet server reversely decapsulates the TCP data flow into a UDP data packet; the Internet server sends the UDP data packet to the telecommunications gateway device in the telecommunications network ; The telecommunication gateway device sends the UDP data packet to the corresponding telecommunication client.

Description

Transmission method, device and system for streaming media data in restricted network

technical field

The present invention relates to the field of communication technology, in particular to a transmission method, device and system for stream media data in a restricted network.

Background technique

Streaming Media (Streaming Media) is a technology that uses streaming technology to transmit multimedia files on the network to provide users with online services. Due to the advantages of being able to generate multi-bandwidth audio and video content in real time and being suitable for users with different access methods, the streaming media industry has developed vigorously.

When transmitting streaming media data on the Internet, a bearer mode based on User Datagram Protocol (User Datagram Protocol, UDP) data packets is usually used for transmission.

Moreover, with the development of Internet technology applications, the Internet has begun to try to communicate with the telecommunications network; in the current real-time communication technology between telecommunications network communication equipment and computer terminals under the Internet network, the telecommunications network usually also specifies UDP data packets are used for transmission.

However, there are also many deficiencies in the existing technology. For example, the existing streaming media data transmission method does not take into account the complexity of the Internet system. For restricted networks with restrictions, such as networks with limited UDP transmission In the network of firewalls or routing devices, when UDP data packets are used for streaming media data transmission in this network, the streaming media data will often be filtered by the network, resulting in the streaming media being unable to be transmitted to the destination, and the transmission reliability is low. Successful streaming data transfer.

Contents of the invention

Embodiments of the present invention provide a streaming media data transmission method, device, and system in a restricted network, which can transmit streaming media data to the destination under the condition of restrictive conditions, with high reliability, and realize streaming media data in a restricted network. Successful transmission in the network.

In order to achieve the above object, technical solution of the present invention is achieved in that way:

The embodiment of the present invention provides a transmission method of streaming media data in a restricted network, including:

The Internet client encapsulates the User Datagram Protocol UDP packet of the streaming media data into a Transmission Control Protocol TCP data stream;

The Internet client sends the TCP data flow to the Internet server through the TCP connection established with the Internet server;

The Internet server reversely decapsulates the TCP data stream into a UDP data packet;

The Internet server sends the UDP data packet to the telecommunication gateway device in the telecommunication network;

The telecommunication gateway device sends the UDP data packet to the corresponding telecommunication client.

The embodiment of the present invention also provides a method for transmitting streaming media data in a restricted network, including:

The first Internet client encapsulates the UDP packet of streaming media data into a TCP data stream;

The first Internet client sends the TCP data stream to the second Internet client through a TCP connection;

The second Internet client reversely decapsulates the TCP data flow to obtain a UDP data packet, so as to use the corresponding streaming media service.

The embodiment of the present invention also provides an Internet device in a restricted network, including:

The receiving unit is used to receive the TCP data flow sent by the Internet client through the TCP connection, and the TCP data flow is obtained by encapsulating the UDP data packet of the streaming media data;

A decapsulation unit, configured to reversely decapsulate the TCP data flow into a UDP data packet;

The sending unit is configured to send the UDP data packet to a telecommunication gateway device in the telecommunication network, so that the telecommunication gateway device sends the UDP data packet to a corresponding telecommunication client.

The embodiment of the present invention also provides a communication system for transmitting streaming media data,

The system includes an Internet client, an Internet server, a telecommunications client and a telecommunications gateway device;

The Internet client is used to encapsulate the UDP data packet of streaming media data into a TCP data flow, and send the TCP data flow to the Internet server through the TCP connection established with the Internet server;

The Internet server is configured to reversely decapsulate the TCP data stream into a UDP data packet, and send the UDP data packet to a telecommunications gateway device in the telecommunications network;

The telecommunication gateway device is configured to send the UDP data packet to a corresponding telecommunication client;

or,

The system includes a first Internet client and a second Internet client;

The first Internet client is used to encapsulate the UDP data packet of streaming media data into a TCP data flow, and send the TCP data flow to the second Internet client through a TCP connection;

The second Internet client is configured to reversely decapsulate the TCP data flow to obtain a UDP data packet, so as to use a corresponding streaming media service.

As can be seen from the above, when the technical solution of the embodiment of the present invention transmits the streaming media data in the limited network, the UDP data packet of the streaming media data is encapsulated into a TCP data stream, and the transmission of the streaming media data is carried out by the TCP data stream, which solves the problem In the existing technology, due to the problems caused by the filtering of UDP data packets by network firewalls or routing devices with restrictive conditions, streaming media data can be transmitted to the destination under the condition of restrictive conditions, with high reliability, thus realizing streaming media Successful transmission of data in restricted networks.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic flow diagram of a method for transmitting streaming media data in a restricted network provided by Embodiment 1 of the present invention;

FIG. 2 is a schematic flowchart of a streaming media data transmission method in a restricted network provided by Embodiment 2 of the present invention;

FIG. 3 is a schematic flowchart of a streaming media data transmission method in a restricted network provided by Embodiment 3 of the present invention;

FIG. 4 is a schematic structural diagram of a UDP data packet encapsulated into a TCP data stream provided by Embodiment 3 of the present invention;

FIG. 5 is a schematic structural diagram of an Internet device in a restricted network provided by Embodiment 4 of the present invention;

FIG. 6 is a schematic structural diagram of a communication system for transmitting streaming media data provided by Embodiment 5 of the present invention;

FIG. 7 is a schematic structural diagram of another communication system for transmitting streaming media data provided by Embodiment 5 of the present invention.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Embodiment 1 of the present invention provides a transmission method of streaming media data in a restricted network, referring to FIG. 1, the method includes:

11: Internet client encapsulates the User Datagram Protocol (UserDatagram Protocol, UDP) packet of streaming media data into Transmission Control Protocol (Transmission Control Protocol, TCP) data flow;

12: The Internet client sends the TCP data stream to the Internet server through the TCP connection established with the Internet server;

13: The Internet server reversely decapsulates the TCP data stream into a UDP data packet;

14: The Internet server sends the UDP data packet to the telecommunication gateway device in the telecommunication network;

15: The telecommunications gateway device sends the UDP data packet to a corresponding telecommunications client.

There are network restrictions in the network where the Internet client in the embodiment of the present invention is located, such as not supporting data transmission under the UDP protocol, etc., and specifying in the telecommunication network to carry out the transmission of streaming media data according to the UDP protocol. But not limited thereto, the solutions of the embodiments of the present invention can also be applied in other restricted networks, such as restricted networks that do not allow message broadcasting.

Considering the layout structure of the existing Internet and telecommunication networks, in order to improve the utilization rate of network resources and facilitate the management of telecommunication clients or data transmission, here, the data transmission is realized through the Internet server and telecommunication gateway equipment with transfer function , it can be understood that when the structure of the network changes, or when the function of the Internet client/telecom client itself is strong enough, the above-mentioned Internet server or telecom gateway device is not necessary. Alternatively, a separate device integrated with the above-mentioned Internet server and telecommunication gateway device is provided to realize the data transmission between the Internet client and the telecommunication client in the restricted network.

As can be seen from the above, when the technical solution of the embodiment of the present invention transmits the streaming media data in the limited network, the UDP data packet of the streaming media data is encapsulated into a TCP data stream, and the transmission of the streaming media data is carried out by the TCP data stream, which solves the problem In the existing technology, due to the problems caused by the filtering of UDP data packets by network firewalls or routing devices with restrictive conditions, streaming media data can be transmitted to the destination under the condition of restrictive conditions, with high reliability, thus realizing streaming media Successful transmission of data in restricted networks.

In order to clearly describe the technical solutions of the embodiments of the present invention, in the embodiments of the invention, words such as "first" and "second" are used to distinguish the same items or similar items with basically the same functions and functions. Personnel can understand that words such as "first" and "second" do not limit the quantity and execution order.

Embodiment 2 of the present invention provides a transmission method of streaming media data in a restricted network, referring to FIG. 2 , the method includes:

21: The first Internet client encapsulates the UDP data packet of the streaming media data into a TCP data stream;

22: The first Internet client sends the TCP data stream to the second Internet client through a TCP connection;

23: The second Internet client reversely decapsulates the TCP data flow to obtain a UDP data packet, so as to use the corresponding streaming media service.

In the embodiment of the present invention, there are network restrictions in the network where the first Internet client and/or the second Internet client are located.

Wherein, the above step 22 can be described in at least the following two situations.

The first case: the first Internet client and the second Internet client establish a TCP connection with the Internet server respectively, and the first Internet client sends the TCP data stream to the Internet server through the TCP connection, and then the Internet server passes the TCP The connection sends the TCP data stream to a second Internet client.

The second case: a TCP connection is established between the first Internet client and the second Internet client, and the first Internet client directly sends the TCP data stream to the second Internet client through the TCP connection.

Further, for the above-mentioned first case, if there is no network restriction in the network where the second Internet client is located, after the Internet server receives the above-mentioned TCP data stream sent from the first Internet client, it can first After the data flow is reversely decapsulated and restored to a UDP data packet, the UDP data packet is sent to the second Internet client.

As can be seen from the above, when the technical solution of the embodiment of the present invention transmits the streaming media data in the limited network, the UDP data packet of the streaming media data is encapsulated into a TCP data stream, and the transmission of the streaming media data is carried out by the TCP data stream, which solves the problem In the existing technology, due to the problems caused by the filtering of UDP data packets by network firewalls or routing devices with restrictive conditions, streaming media data can be transmitted to the destination under the condition of restrictive conditions, with high reliability, thus realizing streaming media Successful transmission of data in restricted networks.

A method for transmitting streaming media data in a restricted network provided by Embodiment 3 of the present invention will be described below. In Embodiment 3 of the present invention, the scenario of streaming media data transmission between an Internet client in a restricted network and a telecommunication client in a telecommunication network is used as an example for illustration.

Referring to Fig. 3, sending streaming media data from an Internet client to a telecom client mainly includes the following processing:

1a: The Internet client encapsulates the UDP packets of the streaming data into a TCP data stream.

UDP data packets usually include two parts: UDP header and UDP data. The UDP header includes active port, destination port, length and checksum. The Internet client removes the header in the UDP data packet, extracts the UDP data part in the UDP data packet, and adds a data packet header for the UDP data part, and the said data packet header indicates channel identification (Identifier, ID), data packet identification and data packet Length (Length): Encapsulate the UDP data part added with the data packet header into the TCP data part in the TCP data stream.

The above channel ID indicates the attribute or function of the transmitted UDP data, such as the transmitted UDP data is used for audio stream or video stream, or, the transmitted UDP data is streaming media data that needs to be encapsulated into a TCP data stream, or also The channel ID can be extended for other functions as needed.

The above data packet ID is used to uniquely identify each UDP data packet. By using the data packet ID, it is possible to analyze whether the transmitted data packets are continuous and whether there is packet loss, which helps to ensure the complete and reliable transmission of data.

The above data packet length is used to describe the length of the UDP data part, so that the UDP data part can be extracted according to the data packet length during reverse decapsulation.

Referring to FIG. 4 , it shows a schematic structural diagram of encapsulating a UDP data packet into a TCP data stream.

From the above, the encapsulation method provided by the embodiment of the present invention is simple to operate, easy to implement, and improves the utilization rate of existing network resources.

2a: The Internet client sends the TCP data stream to the Internet server through the TCP connection established with the Internet server.

Here, it is required that an available TCP connection exists between the Internet client and the Internet server.

3a: The Internet server reversely decapsulates the TCP data flow into UDP data packets.

Since the specified streaming media data in the telecommunications network needs to be transmitted in UDP packets, the Internet server needs to reversely decapsulate the above TCP data streams and restore them to UDP packets.

The Internet server extracts the UDP data part from the TCP data part of the TCP data stream according to the above-mentioned data packet header. For example, when the Internet server detects a data packet header, it is known that there is a UDP data part, and the Internet server extracts the TCP data part according to the length of the data packet. Several bytes of data in the data part are used as the UDP data part. Then, the Internet server encapsulates the UDP data part with a UDP header, and restores the UDP data part into a UDP data packet according to the UDP format.

4a: The Internet server sends the UDP data packet to the telecommunication gateway device in the telecommunication network.

There is a connection for transmitting UDP data packets between the above-mentioned Internet server and the telecommunication gateway device.

5a: The telecommunications gateway device sends the UDP data packet to the corresponding telecommunications client.

The telecommunication gateway device sends the UDP data packet to the telecommunication client provided by it in the telecommunication network. The telecom client runs or plays the UDP data packet locally and uses the corresponding audio and video services.

So far, the process of sending streaming media data from the Internet client to the telecommunications client in the restricted Internet has been realized.

Referring to Fig. 3, sending streaming media data from an Internet client to a telecom client mainly includes the following processing:

1b: The telecom client sends the UDP data packet of the streaming media data to the telecom gateway device.

The above-mentioned telecommunication gateway device is a gateway device in a telecommunication network that provides services to telecommunication clients.

2b: The telecommunication gateway device sends the UDP data packet to the Internet server.

There is a connection for transmitting UDP data packets between the above-mentioned Internet server and the telecommunication gateway device.

3b: The Internet server encapsulates the UDP data packet into a TCP data stream.

For the specific method of encapsulating the UDP data packet by the Internet server, refer to the above step 1a.

4b: The Internet server sends the TCP data stream to the Internet client through the TCP connection established with the Internet client.

Requires an available TCP connection between the Internet client and the Internet server.

Moreover, when the bandwidth resource in the network is insufficient or the data transmission rate is too low, when the Internet server sends the TCP data flow to the Internet client, part of the TCP data flow is discarded. This processing method mainly considers whether the TCP data stream is sent to the destination during the transmission of the TCP data stream. For example, when the Internet client receives the TCP data stream, it sends feedback to the Internet server through an acknowledgment (ACK) message. . The next TCP data stream will be sent only after the currently processed TCP data stream is sent successfully. If the transmission of the current TCP data flow fails, it affects the sending of the next TCP data flow or does not execute the sending of the next TCP data flow. Therefore, when the network environment is poor, part of the TCP data flow is discarded to ensure the normal transmission of the TCP data flow as a whole, thereby ensuring the successful transmission of the streaming media data in the restricted network.

5b: The Internet client reversely decapsulates the TCP data stream to obtain a UDP data packet, and then, the Internet client runs or plays the UDP data packet locally, thereby using corresponding audio and video services.

As can be seen from the above, when the technical solution of the embodiment of the present invention transmits the streaming media data in the limited network, the UDP data packet of the streaming media data is encapsulated into a TCP data stream, and the transmission of the streaming media data is carried out by the TCP data stream, which solves the problem In the existing technology, due to the problems caused by the filtering of UDP data packets by network firewalls or routing devices with restrictive conditions, streaming media data can be transmitted to the destination under the condition of restrictive conditions, with high reliability, thus realizing streaming media Successful transmission of data in restricted networks.

Embodiment 4 of the present invention also provides an Internet device in a restricted network. Referring to FIG. 5, the device includes:

The receiving unit 501 is used to receive the TCP data flow sent by the Internet client through the TCP connection, and the TCP data flow is obtained by encapsulating the UDP data packet of the streaming media data;

A decapsulation unit 502, configured to reversely decapsulate the TCP data flow into a UDP data packet;

The sending unit 503 is configured to send the UDP data packet to a telecommunication gateway device in the telecommunication network, so that the telecommunication gateway device sends the UDP data packet to a corresponding telecommunication client.

Further, the device further includes an encapsulation unit 504. In this scenario, the receiving unit 501 is also configured to receive a UDP packet of streaming media data from a telecommunication network; the encapsulation unit 504 is configured to convert the The UDP data packet is encapsulated into a TCP data flow; the sending unit 503 is also configured to send the TCP data flow to the Internet client through the TCP connection established with the Internet client, so that the Internet client can perform a detailed analysis of the TCP data flow. Reverse decapsulation to get UDP packets.

For the specific working mode of the device embodiment of the present invention, reference may be made to the relevant content in the method embodiment of the present invention.

As can be seen from the above, when the technical solution of the embodiment of the present invention transmits the streaming media data in the limited network, the UDP data packet of the streaming media data is encapsulated into a TCP data stream, and the transmission of the streaming media data is carried out by the TCP data stream, which solves the problem In the existing technology, due to the problems caused by the filtering of UDP data packets by network firewalls or routing devices with restrictive conditions, streaming media data can be transmitted to the destination under the condition of restrictive conditions, with high reliability, thus realizing streaming media Successful transmission of data in restricted networks.

Embodiment 5 of the present invention also provides a communication system for transmitting streaming media data. Referring to FIG. 6, the system includes an Internet client 601, an Internet server 602, a telecommunications client 603, and a telecommunications gateway device 604;

The Internet client 601 is used to encapsulate the UDP packets of streaming media data into a TCP data flow, and send the TCP data flow to the Internet server through the TCP connection established with the Internet server; the Internet server 602, It is used to reversely decapsulate the TCP data flow into a UDP data packet, and send the UDP data packet to a telecommunications gateway device in the telecommunications network; the telecommunications gateway device 604 is used to send the UDP data packet to a corresponding Telecom client 603;

Further, the above-mentioned telecommunications gateway device is also used to send the received UDP data packet from the telecommunications client to the Internet server; the above-mentioned Internet server is also used to encapsulate the UDP data packet into a TCP data stream, and, The TCP data stream is sent to the Internet client through the TCP connection established with the Internet client; the above-mentioned Internet client is also used to reversely decapsulate the TCP data stream to obtain a UDP data packet, so as to use the corresponding streaming media business;

or,

Referring to Fig. 7, described system comprises the first Internet client 701 and the second Internet client 702; Described first Internet client 701 is used for the UDP packet of streaming media data is encapsulated as TCP data flow, connects by TCP Send the TCP data stream to a second Internet client; the second Internet client 702 is configured to reversely decapsulate the TCP data stream to obtain a UDP data packet, so as to use a corresponding streaming media service.

in,

A TCP connection is established between the first Internet client and the second Internet client, and the first Internet client directly sends the TCP data stream to the second Internet client through the TCP connection. or,

Referring to Fig. 3, the first Internet client and the second Internet client establish a TCP connection with the Internet server respectively, and the first Internet client sends the TCP data stream to the Internet server through the TCP connection, and then the Internet server connects to the Internet server through the TCP connection. The TCP data stream is sent to the second Internet client; at this time, the system can also include an Internet server 703, which is used to establish a TCP connection with the first Internet client and the second Internet client respectively, using the The TCP connection forwards the TCP data stream from the first Internet client to the second Internet client.

As can be seen from the above, when the technical solution of the embodiment of the present invention transmits the streaming media data in the limited network, the UDP data packet of the streaming media data is encapsulated into a TCP data stream, and the transmission of the streaming media data is carried out by the TCP data stream, which solves the problem In the existing technology, due to the problems caused by the filtering of UDP data packets by network firewalls or routing devices with restrictive conditions, streaming media data can be transmitted to the destination under the condition of restrictive conditions, with high reliability, thus realizing streaming media Successful transmission of data in restricted networks.

Those skilled in the art can clearly understand that the present invention can be realized by means of software plus necessary general hardware platform. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products can be stored in storage media, such as ROM/RAM, disk, The CD, etc., includes several instructions to make a computer device (which may be a personal computer, server, or network device, etc.) execute the methods described in various embodiments or some parts of the embodiments of the present invention.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection.

Claims (8)

1. A method for transmitting streaming media data in a restricted network, the method comprising:

the internet client encapsulates a user data packet protocol (UDP) data packet of the streaming media data into a Transmission Control Protocol (TCP) data stream;

the Internet client sends the TCP data stream to an Internet server through a TCP connection established with the Internet server;

the Internet server reversely decapsulates the TCP data stream into a UDP data packet;

the internet server sends the UDP data packet to telecommunication gateway equipment in a telecommunication network;

the telecommunication gateway equipment sends the UDP data packet to a corresponding telecommunication client;

the UDP data packet is encapsulated into a TCP data stream in the following mode:

extracting a UDP data part in a UDP data packet, and adding a data packet header to the UDP data part, wherein the data packet header indicates a channel identifier, a data packet identifier and a data packet length;

encapsulating the UDP data part added with the data packet header in a TCP data part in a TCP data stream; and the number of the first and second groups,

reverse decapsulating the TCP data stream into UDP packets by:

extracting the UDP data part from the TCP data part of the TCP data stream according to the data packet length indicated by the data packet head;

and encapsulating the UDP data part with a UDP header, and recovering the UDP data part into a UDP data packet according to a UDP format.

2. The method of claim 1, further comprising:

the telecommunication client sends the UDP data packet of the streaming media data to the telecommunication gateway equipment;

the telecommunication gateway equipment sends the UDP data packet to an Internet server;

the internet server encapsulates the UDP data packet into a TCP data stream;

the Internet server sends the TCP data stream to the Internet client through a TCP connection established with the Internet client;

and the Internet client reversely decapsulates the TCP data stream to obtain a UDP data packet so as to use the corresponding streaming media service.

3. The method of claim 2, wherein the internet server sending the TCP data stream to the internet client over a TCP connection established with the internet client comprises:

when the bandwidth resource in the network is insufficient or the data transmission rate is too low, the internet server discards part of the TCP data stream when sending the TCP data stream to the internet client.

4. A method of transmitting streaming media data in a constrained network,

a first internet client encapsulates a UDP data packet of streaming media data into a TCP data stream;

the first internet client sends the TCP data stream to the second internet client through TCP connection;

a second internet client reversely decapsulates the TCP data stream to obtain a UDP data packet so as to use a corresponding streaming media service;

the UDP data packet is encapsulated into a TCP data stream in the following mode:

extracting a UDP data part in a UDP data packet, and adding a data packet header to the UDP data part, wherein the data packet header indicates a channel identifier, a data packet identifier and a data packet length;

encapsulating the UDP data part added with the data packet header in a TCP data part in a TCP data stream; and the number of the first and second groups,

reverse decapsulating the TCP data stream into UDP packets by:

extracting the UDP data part from the TCP data part of the TCP data stream according to the data packet length indicated by the data packet head;

and encapsulating the UDP data part with a UDP header, and recovering the UDP data part into a UDP data packet according to a UDP format.

5. The method of claim 4, wherein the first internet client sending the TCP data stream to the second internet client over a TCP connection comprises:

the first internet client and the second internet client are respectively connected with an internet server in a TCP mode, the first internet client sends the TCP data stream to the internet server through the TCP connection, and then the internet server sends the TCP data stream to the second internet client through the TCP connection; or,

and a TCP connection is established between the first Internet client and the second Internet client, and the first Internet client directly sends the TCP data stream to the second Internet client through the TCP connection.

6. An internet device in a constrained network, the device comprising:

the receiving unit is used for receiving a TCP data stream sent by an Internet client through TCP connection, wherein the TCP data stream is obtained by encapsulating a UDP (user Datagram protocol) data packet of streaming media data;

a decapsulation unit, configured to decapsulate the TCP data stream into a UDP data packet in a reverse direction;

a sending unit, configured to send the UDP data packet to a telecommunication gateway device in a telecommunication network, so that the telecommunication gateway device sends the UDP data packet to a corresponding telecommunication client;

the decapsulating unit is configured to decapsulate the TCP data stream into a UDP data packet in the reverse direction as follows:

extracting the UDP data part from the TCP data part of the TCP data stream according to the data packet length indicated by the data packet head;

encapsulating a UDP header on the UDP data part, and recovering the UDP data part into a UDP data packet according to a UDP format;

the device further comprises a packaging unit which is,

the receiving unit is further configured to receive a UDP packet of streaming media data from a telecommunication network;

the encapsulating unit is used for encapsulating the UDP data packet into a TCP data stream;

the sending unit is further configured to send the TCP data stream to an internet client through a TCP connection established with the internet client, so that the internet client reversely decapsulates the TCP data stream to obtain a UDP data packet;

the encapsulation unit is configured to encapsulate a UDP data packet into a TCP data stream in the following manner:

extracting a UDP data part in a UDP data packet, and adding a data packet header to the UDP data part, wherein the data packet header indicates a channel identifier, a data packet identifier and a data packet length;

and encapsulating the UDP data part added with the data packet header into a TCP data part in a TCP data stream.

7. A communication system for transmitting streaming media data,

the system comprises an internet client, an internet server, a telecommunication client and a telecommunication gateway device;

the internet client is used for packaging UDP data packets of streaming media data into TCP data streams and sending the TCP data streams to the internet server through TCP connection established with the internet server;

the internet server is used for reversely decapsulating the TCP data stream into a UDP data packet and sending the UDP data packet to a telecommunication gateway device in a telecommunication network;

the telecommunication gateway equipment is used for sending the UDP data packet to a corresponding telecommunication client;

or,

the system comprises a first internet client and a second internet client;

the first internet client is used for packaging a UDP (user Datagram protocol) data packet of streaming media data into a TCP data stream and sending the TCP data stream to the second internet client through TCP connection;

the second internet client is used for reversely decapsulating the TCP data stream to obtain a UDP data packet so as to use a corresponding streaming media service;

the UDP data packet is encapsulated into a TCP data stream in the following mode:

extracting a UDP data part in a UDP data packet, and adding a data packet header to the UDP data part, wherein the data packet header indicates a channel identifier, a data packet identifier and a data packet length;

encapsulating the UDP data part added with the data packet header in a TCP data part in a TCP data stream; and the number of the first and second groups,

reverse decapsulating the TCP data stream into UDP packets by:

extracting the UDP data part from the TCP data part of the TCP data stream according to the data packet length indicated by the data packet head;

and encapsulating the UDP data part with a UDP header, and recovering the UDP data part into a UDP data packet according to a UDP format.

8. The system of claim 7,

when the system comprises an internet client, an internet server, a telecommunications client and a telecommunications gateway device,

the telecommunication gateway equipment is also used for sending the received UDP data packet from the telecommunication client to an Internet server;

the Internet server is also used for packaging the UDP data packet into a TCP data stream and sending the TCP data stream to the Internet client through a TCP connection established with the Internet client;

the Internet client is also used for reversely decapsulating the TCP data stream to obtain a UDP data packet so as to use a corresponding streaming media service;

when the system comprises a first internet client and a second internet client, the system also comprises an internet server which is used for establishing TCP connection with the first internet client and the second internet client respectively and forwarding the TCP data stream from the first internet client to the second internet client by utilizing the TCP connection.

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