Problems that need to be solved by the tcp framework

1 Automatically encode, decode data packets, compress and transmit data in the network
Send data frequently to reduce the delay in the network.Encoding and decoding operate at high speed in cpu, and transmission in the network is very slow
tcp is streaming
2. Automatically encapsulate, unpack, and solve the problem of TCP sticky packets
TCP streaming, messages are connected at the end.Solution: Add a header to each packet, at least add length information, and read how long it is.
3. When the connection is established and the connection is disconnected, the callback function is automatically executed
4. The number of client connections is controlled
Long messages, long connections
5. The frequency of client messages is controlled
Send many packets per second
6. Automatically process client messages
According to the type of client message, assign messageID, identify the message according to messageID, bind callback function, and call corresponding function for processing.
7. Automatically start a fixed number of worker goroutines to process messages to avoid wireless expansion of goroutines
Come over and start a goroutine.You can't let goroutine expand infinitely, with a fixed number, to process.Organize, put into message queue.The worker consumes messages from the message queue and processes them.Process the message, use the callback function registered by the user, and finish the process.
8. Efficient timer/ticker that automatically executes callback functions

client—>client handler goroutine—>two goroutines
client reader goroutine
client writer goroutine coding

Unpack the data, the data and the connection are passed into the message processing module as a request to form a request

When the data is processed, it is sent to the message queue, such as sending to the fifth message queue 5 worker5 reads the message, and the worker goes to the apis to find it

If the api needs to write data to the client, a connection message is encapsulated in the request