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Communication chat
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Application background TCP will maintain its head and data inspection and. This is an end to end inspection and the purpose is to detect any changes in the data transmission process. If you receive a section of the test and error, TCP will discard the packet and not acknowledge receipt of this message segment (hope originator timeout and retransmission).Because the arrival of the IP data can be lost, the arrival of the TCP packet may also be lost. If necessary, TCP will be re ordered to receive the data, the data will be received in the correct order to the application layer. Key Technology The sender to provide enough information, so that the receiver can not only detect the bit error, but also restore the bit error. This is feasible on a channel that is only going to happen, and the price is a lot of addit
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TCP data receiving and sending source
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Application background Socket mechanism, the application layer of the program to send () function to send data to the system, the transmission of the cache, we call it SendQ, which means that this is a FIFO (advanced first out) queue. This cache is a system decision, not specified in our program. Then the socket mechanism is responsible for sending the data in RecvQ to the SendQ of the receiving buffer in bytes. RecvQ is also a system of FIFO cache queue. From the programmer's point of view, the send () function is only responsible for sending data into SendQ, while SendQ is not controllable when the data is transmitted. Key Technology Using socket mechanism, using a simple c# code to achieve the receiving and the way cases
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Data transmission
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Application background Application data is divided into TCP that the most suitable for sending data block. The unit of information that is passed to the TCP by IP is called a message segment or section (segment).When the TCP sends out a segment, it starts a timer, waiting for the destination to confirm receipt of the message. If not timely received a confirmation, will send this message segment.When TCP receives the data from the other end of the TCP, it will send a confirmation. This confirmation is not sent immediately, and usually will be delayed for a fraction of a second Key Technology Receiver: need to confirm the information is sent by the sender, and feedback to the sender if there is a mistakeSender: the need in sending information to add additional information to the receivers to receive the information whether there was an error of judgment, and requires the receiver to receive feedback, if an error occurs to the retransmission of
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Data transmission
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Application background Application data is divided into TCP that the most suitable for sending data block. The unit of information that is passed to the TCP by IP is called a message segment or section (segment).When the TCP sends out a segment, it starts a timer, waiting for the destination to confirm receipt of the message. If not timely received a confirmation, will send this message segment.When TCP receives the data from the other end of the TCP, it will send a confirmation. This confirmation is not sent immediately, and usually will be delayed for a fraction of a second Key Technology Receiver: need to confirm the information is sent by the sender, and feedback to the sender if there is a mistakeSender: the need in sending information to add additional information to the receivers to receive the information whether there was an error of judgment, and requires the receiver to receive feedback, if an error occurs to the retransmission of
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Communication chat software
no vote
Application background TCP will maintain its head and data inspection and. This is an end to end inspection and the purpose is to detect any changes in the data transmission process. If you receive a section of the test and error, TCP will discard the packet and not acknowledge receipt of this message segment (hope originator timeout and retransmission).Because the arrival of the IP data can be lost, the arrival of the TCP packet may also be lost. If necessary, TCP will be re ordered to receive the data, the data will be received in the correct order to the application layer. Key Technology The sender to provide enough information, so that the receiver can not only detect the bit error, but also restore the bit error. This is feasible on a channel that is only going to happen, and the price is a lot of additional information.If you receive the feedback, you are considered to be a mistake, then carry on the heavy. But then it may be possible to in
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TCP server client connection
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Application background The protocol is used to establish a virtual connection between the host and the host to realize the high reliability of data packet switching. The IP protocol can be divided and assembled in IP data packets, but it is not clear whether the data packets are transmitted to the target computer by IP protocol. The use of TCP protocol is different, in the protocol transmission mode in the data packets are successfully sent to the target computer, TCP will require a confirmation; if not received within a certain time limit, then TCP will re send data packets. In addition, in the process of transmission, if you receive a disorder, loss and damage to the data packet, TCP can also be responsible for recovery. Key Technology After receiving the SYN message, the LISTEN SOCKET of the server can se
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Various network protocol class library source code
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Application background LumiSoft.Net variety of network protocol class library source code, easy to learn to extract and use Key Technology There are a lot of class libraries, including a variety of tcp. Udp. Multicast mode, etc.
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TCP data receiving and sending source
no vote
Application background Socket mechanism, the application layer of the program to send () function to send data to the system, the transmission of the cache, we call it SendQ, which means that this is a FIFO (advanced first out) queue. This cache is a system decision, not specified in our program. Then the socket mechanism is responsible for sending the data in RecvQ to the SendQ of the receiving buffer in bytes. RecvQ is also a system of FIFO cache queue. From the programmer's point of view, the send () function is only responsible for sending data into SendQ, while SendQ is not controllable when the data is transmitted. Key Technology Using socket mechanism, using a simple c# code to achieve the receiving and the way cases
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TCP user chat test tool
no vote
Application background Client: & nbsp; - manually enter server IP address and port number are connected to a send message to the server and displaying the server returns the messageServer: & nbsp; - manually create server-side and client connection requests - receive all users to send messages - to all online users sending messages & nbsp; Key Technology (socket); 2) the socket is bound to a local address and port (bind); 3) will be set to listen; ; connect; accept; send/recv; send/recv; 4). Return, wait for another client to communicate ( ); 5), (2), socket (3), close socket;
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