mod_jk uses the following nsapi functions:

param_free                      line 143
pblock_fr                       line 143: pblock_remove
pblock_nvinsert                 line 147
http_status                     line 155: protocol_status
http_start_response             line 157: protocol_start_response
netbuf_next                     line 188: netbuf_getc
netbuf_getbytes
net_write                       line 226
pblock_findval                  line 439
systhread_start                 line 303
systhread_sleep                 line 306
magnus_atrestart                line 314
shexp_match                     line 367
request_header                  line 443
session_dns_lookup              line 453: session_dns
conf_getglobals()               line 464: server_name
                                          server_portnum
                                          security_active


data structures:

Session:
          csd      net_write
          inbuf    netbuf_getc