Hello, the MSDN docu about WSAGetLastError warns to get the error-code ***immediately*** after occurance. See :
https://msdn.microsoft.com/de-de/library/windows/desktop/ms741580(v=vs.85).aspx " ... If a function call's return value indicates that error or other relevant data was returned in the error code, WSAGetLastError should be called immediately ..." However in windows SocketInputStream.c , this was not done; we noticed very seldom errors because of this (not reproducible however) so we had a fix for this in our code base for a long time. Should we change this as well in OpenJDK , for example from : jdk/src/java.base/windows/native/libnet/SocketInputStream.c 120 nread = recv(fd, bufP, len, 0); 121 if (nread > 0) { 122 (*env)->SetByteArrayRegion(env, data, off, nread, (jbyte *)bufP); 123 } else { 124 if (nread < 0) { 125 // Check if the socket has been closed since we last checked. 126 // This could be a reason for recv failing. 127 if ((*env)->GetIntField(env, fdObj, IO_fd_fdID) == -1) { 128 JNU_ThrowByName(env, "java/net/SocketException", "Socket closed"); 129 } else { 130 switch (WSAGetLastError()) { to : 120 nread = recv(fd, bufP, len, 0); 121 if (nread > 0) { 122 (*env)->SetByteArrayRegion(env, data, off, nread, (jbyte *)bufP); 123 } else { 124 if (nread < 0) { 125 int err = WSAGetLastError(); ... switch (err) { Thanks and best regards, Matthias
