C ++：boost :: asio：可用于TCP套接字的最大缓冲区大小是多少？

Question

In this SSL client example , the default buffer size is 1K=1024 bytes. Are there any practical limitations on how much I could increase that? Would it work fine with no unforeseeable problems if I set the buffer to something like 100 MB?

Notice that the buffer is not just the reserved size; it is also passed to read() and write() . At what size would these functions face problems due to size limitations? Does such a limitation exist? I can imagine that there is at least a defined limit for how much I can write() .

Answer 1

除了int的最大值外没有其他限制，但是大于套接字接收缓冲区的读取缓冲区是没有意义的，因为多余的缓冲区永远无法使用。