Read wrong? Tcpread which errno=EWOULDBLOCK [errno[90][Operation Would block]] What is the solution? Read wrong? Http://oldsite.linuxaid.com.cn/support/showfom.jsp?i=20 By establishing a set of adapter for nonobstructive, you can effectively "questioned" adapter kit to obtain information. If you try to read information from a nonobstructive presentation adapter and any data that he will not -- he would become blocked by setting up EWOULDBLOCK errno will return -1. In other words, this is a mistake to return to normal, or continue to wait for the next time will be able to operate. [ Closed window ]