Created attachment 32644 [details] Patch introducing AP_FCGI_MAX_RECORD_LEN for mod_proxy_fcgi mod_proxy_fcgi hardcodes a 16 kB limit on environment variable length. The attached patch makes it easier to set a higher limit at build time, by setting AP_FCGI_MAX_RECORD_LEN in CFLAGS.
If of any interest, the same code is also in mod_authnz_fcgi