Issue with the Receive() function in socket
The Receive() function is used for receiving data, and its prototype is:
Receive a character buffer with a specified size and flags.
Parameter description:
- buffer: a pointer to the buffer that receives data.
- Buffer size: Size of the buffer.
- Flags: the receiving flag, typically set to 0.
The purpose of the Receive() function is to receive data from a connected socket and store the received data in a specified buffer. It will block and wait until data arrives or the connection is closed. The amount of data received may be smaller than the size of the buffer, so the actual size of the received data should be determined based on the return value.
The return value of the Receive() function indicates the number of bytes successfully received. If it returns 0, the connection is closed. If it returns -1, an error has occurred. You can use the GetLastError() function to obtain detailed error information.
Before using the Receive() function, it is necessary to first create a socket and establish a connection.