nx_pages_vhost_debug.nx source

1// nx_pages_vhost_debug.nx -- isolate failures step-by-step via distinct exit codes. 2 3import "nx_pages_vhost.nx" 4import "nx_http.nx" 5const K_MAGIC_2048: i64 = 2048 6 7func main() -> i64 { 8 let arena: *u8 = sys_mmap(K_MAGIC_2048) 9 let vhosts: *i64 = sys_mmap(4 * NX_VHOST_STRIDE * 8) as *i64 10 let table: *NxVHostTable = sys_mmap(40) as *NxVHostTable 11 let cursor: *i64 = sys_mmap(8) as *i64 12 cursor[0] = 0 13 nx_vhost_table_init(table, arena, K_MAGIC_2048, vhosts) 14 15 // Step 1: parse a request. 16 let req: *HttpRequest = sys_mmap(K_MAGIC_2048) as *HttpRequest 17 let raw1: *u8 = "GET / HTTP/1.1\r\nHost: nishifamily.com\r\n\r\n" as *u8 18 var n: i64 = 0 19 while raw1[n] != 0 { n = n + 1 } 20 // Manually run the request-line parse to isolate where it fails. 21 http_request_init(req) 22 let after_m: i64 = http_scan_token_end(raw1, 0 as i64, n) 23 if after_m != 3 { return 50 + after_m } // expect 3 ("GET") 24 let parse_rc: i64 = http_parse(raw1, n, req) 25 if parse_rc != 0 { return 0 - parse_rc + 100 } // exit 101-105 = which HTTP_ERR 26 27 // Step 2: check n_headers after parse. 28 if req.n_headers < 1 { return 11 } // exit 11: no headers parsed 29 30 // Step 3: lookup Host header value. 31 let host_off: *i64 = sys_mmap(8) as *i64 32 let host_len: *i64 = sys_mmap(8) as *i64 33 let has_host: i64 = http_get_header(raw1, req, "Host" as *u8, host_off, host_len) 34 if has_host != 1 { return 12 } // exit 12: Host header not found 35 36 // Step 4: verify host len == 15 (length of "nishifamily.com"). 37 if host_len[0] != 15 { return 13 } // exit 13: wrong host length 38 39 // Step 5: add a vhost; check the index. 40 let i_nf: i64 = nx_vhost_add(table, cursor, 41 "nishifamily.com" as *u8, 42 "/share/nishi-pages/dist" as *u8) 43 if i_nf != 0 { return 14 } // exit 14: add returned wrong index 44 45 // Step 6: check n_vhosts after add. 46 if table.n_vhosts != 1 { return 15 } // exit 15 47 48 // Step 7: verify the stored arena bytes match the input host name. 49 if table.vhosts[NX_VHOST_HNAME_LEN] != 15 { return 16 } // exit 16 50 51 // Step 8: dispatch. 52 let out_off: *i64 = sys_mmap(8) as *i64 53 let out_len: *i64 = sys_mmap(8) as *i64 54 let v: i64 = nx_vhost_dispatch(raw1, req, table, out_off, out_len) 55 if v != NX_VHOST_OK { return 20 + v } // exit 20-24 = which verdict 56 57 // Step 9: returned len matches doc root len = 23. 58 if out_len[0] != 23 { return 30 } // exit 30 59 60 return 0 // all steps OK 61}