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Inherited from basic_socket.
Open the socket using the specified protocol.
void open(
const protocol_type & protocol,
asio::error_code & ec);
This function opens the socket so that it will use the specified protocol.
An object specifying which protocol is to be used.
Set to indicate what error occurred, if any.
asio::ip::tcp::socket socket(io_context);
asio::error_code ec;
socket.open(asio::ip::tcp::v4(), ec);
if (ec)
{
// An error occurred.
}