Storing the output of read() from a socket in a char variable

Question

What's the easiest way of storing the output from a read() or recv() operation from a Socket in a char variable?

I'm passing a piece of text from client to server and need to read it into a char variable which will then be displayed and used further down the application.

Answer 1

如果您正在从套接字读取数据，则只需将char缓冲区的地址作为第二个参数传递给read() （或者，如果您使用其中任何一个，则将recv()或recvfrom()的第二个参数传递）。

Answer 2

You can try something like this:

char buf[1024];
ssize_t n = read(fd, buf, sizeof(buf));

Don't forget to check and interpret the return value n .

If you want to pass the data around, you can also use a vector :

std::vector<char> buf(1024);
ssize_t n = read(fd, buf.data(), buf.size());