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Diffstat (limited to 'xpa/notes/winport.note')
-rw-r--r-- | xpa/notes/winport.note | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/xpa/notes/winport.note b/xpa/notes/winport.note deleted file mode 100644 index fb7b46d..0000000 --- a/xpa/notes/winport.note +++ /dev/null @@ -1,81 +0,0 @@ -Documentation: - -The URL: - - http://msdn.microsoft.com/library - -has a good Unix Application Migration Guide as well as Win32 API. - - MINGW32 -Problems: - -client.c: - -The select() function does not work on stdio files, so xpaset cannot add -stdio to select(). This means that "cat foo.fits | xpaset ds9" is not -implemented. This is a client side problem and would not affect ds9 running -as an xpa server. - -xpaio.c and others: - -Win32 does not support most Unix signal handling, and in particular, the -SIGALRM signal. This means that XPA will hang indefinitely on a system -call, i.e., there is no timeout support corresponding to XPA_LONG_TIMEOUT -and XPA_SHORT_TIMEOUT. This affects both clients and servers. - -timedconn.c: - -Again, lack of support for SIGALRM means alrmconnect() is not implemented. -For some reason, noblkconect() also did not work properly, so I had to -use theregular connect() in client.c and hang until further notice. This -is a client side problem and would not affect ds9 as an xpa server. - -launch.c: - -Without fork(), its not obvious how to make the code wait for the -child to start. In the end, I used simply called win32 spawnvp(), put -a short sleep into the parent, and hoped for the best. - -find.c: - -Couldn't find the access mode bits (S_IRUSR, S_IWUSR, S_IXUSR) in win32, -so access checking in find() is not supported. - -Code Changes: - -xpa.c, client.c (sockets) - -Ironically, wsock64 has an FD_SETSIZE of 64 and I had to redefine this to -8192 to make XPA sockets work. - -For wsock32 sockets, we must initialize wsock32 using: - - WSADATA wsaData; - ... - if( WSAStartup(MAKEWORD(2,0), &wsaData) ) != 0 ) {handle error}; - -and clean up at the time of exit: - - WSACleanup(); - -The close(sock) call is replaced by closesocket(sock). - -The call: - - fcntl(sock, F_SETFD, FD_CLOEXEC); - -is not needed or implemented (since sockets do not survive across exec) and -must be commented out. - -Calls to: - - flags = fcntl(client->datafd, F_GETFL); - fcntl(client->datafd, F_SETFL, flags|NONBIO); - -get changed to: - - int flags=1; - ioctlsocket(socket, FIONBIO, (u_long FAR *)&flags); - - - |