Good day to all!
Testing mapserver under nginx and Linux.
Mapserver launched as a process via fcgiwrap terminates after the first
response and does not stay in memory as in Apache mod_fcgid.
After some research I found out that the reason is in the FCGI_Accept function
which should wait for a connection but it returns -1 when it is run the second
time.
while( !finish_process && FCGI_Accept() >= 0 ) { <-- first time
FCGI_Accept() return 0. Next run always -1
--------
int a=-2;
while( !finish_process && FCGI_Accept() >= 0 ) { <-- first time FCGI_Accept()
return 0.
a = FCGI_Accept();
msDebug("==FCGI_Accept on start== %d\n", a); <-- first time FCGI_Accept()
return -1.
I understand that this is most likely not a mapserver problem. Most likely the
problem is on the fcgiwrap service side. But maybe someone has experience
running a mapserver under nginx in FastCGI mode?
MapServer version 8.0.1 PROJ version 8.2 GDAL version 3.9 OUTPUT=PNG
OUTPUT=JPEG SUPPORTS=PROJ SUPPORTS=AGG SUPPORTS=FREETYPE SUPPORTS=CAIRO
SUPPORTS=ICONV SUPPORTS=FRIBIDI SUPPORTS=WMS_SERVER SUPPORTS=WFS_SERVER
SUPPORTS=WCS_SERVER SUPPORTS=OGCAPI_SERVER SUPPORTS=FASTCGI SUPPORTS=THREADS
SUPPORTS=GEOS INPUT=JPEG INPUT=POSTGIS INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE
INPUT=FLATGEOBUF
CentOS Stream release 9
nginx version: nginx/1.20.1
fcgiwrap version 1.1.0
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