I m writting an UDP server for a game. Do you know if is possible to have multisocket in UDP on one port ? or I must use dynamic port (one socket = one port) ?
感谢
见http://msdn.microsoft.com/en-us/library/windows/desktop/ms740621%28v=vs.85%29.aspx“rel=”>。 利用SO_REUSEADDR...:
利用SO_REUSEADDR
The SO_REUSEADDR socket option allows a socket to forcibly bind to a port in use by another socket. The second socket calls setsockopt with the optname parameter set to SO_REUSEADDR and the optval parameter set to a boolean value of TRUE before calling bind on the same port as the original socket. Once the second socket has successfully bound, the behavior for all sockets bound to that port is indeterminate. For example, if all of the sockets on the same port provide TCP service, any incoming TCP connection requests over the port cannot be guaranteed to be handled by the correct socket — the behavior is non-deterministic. A malicious program can use SO_REUSEADDR to forcibly bind sockets already in use for standard network protocol services in order to deny access to those service. No special privileges are required to use this option.
博努斯读:。
在一个乌戈港口制造多块地块是毫无道理的。 UDP不是像TCP这样的第2点议定书,即使用一个“服务器”的包裹,与特定港口连接,你可以处理数百个客户。
Sure you can have multiple UDP sockets on one port if SO_REUSEADDR is specified via setsockopt. However, I doubt that what you really need is using one UDP socket to communicate with multiple clients, which is also feasible. UDP is not connection-oriented, UDP APIs like sendto and recvfrom could distinguish different peers on one socket.
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