aboutsummaryrefslogtreecommitdiff
path: root/src/http/modules/proxy/ngx_http_proxy_handler.c
blob: baecb25311e9997d567bbbf7b1b71d15945b026a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_event.h>
/* STUB */ #include <ngx_event_connect.h>
#include <ngx_http.h>
#include <ngx_http_proxy_handler.h>



static ngx_command_t ngx_http_proxy_commands[] = {
    ngx_null_command
};


ngx_http_module_t  ngx_http_proxy_module_ctx = {
    NULL,                                  /* create main configuration */
    NULL,                                  /* init main configuration */

    NULL,                                  /* create server configuration */
    NULL,                                  /* merge server configuration */

#if 0
    ngx_http_proxy_create_conf,            /* create location configration */
    ngx_http_proxy_merge_conf              /* merge location configration */
#endif

    NULL,
    NULL
};


ngx_module_t  ngx_http_proxy_module = {
    NGX_MODULE,
    &ngx_http_proxy_module_ctx,            /* module context */
    ngx_http_proxy_commands,               /* module directives */
    NGX_HTTP_MODULE,                       /* module type */
    NULL,                                  /* init module */
    NULL                                   /* init child */
};


#if 0
static
#endif

int ngx_http_proxy_handler(ngx_http_request_t *r)
{
    int                     rc;
    ngx_http_proxy_ctx_t   *p;
    ngx_peer_connection_t  *pc;


    ngx_http_create_ctx(r, p, ngx_http_proxy_module,
                        sizeof(ngx_http_proxy_ctx_t),
                        NGX_HTTP_INTERNAL_SERVER_ERROR);


    p->action = "connecting to upstream";
    p->request = r;


#if 0
    pc->peers = lcf->peers;
#endif

    p->upstream.log = r->connection->log;

    do {
        rc = ngx_event_connect_peer(&p->upstream);

        if (rc == NGX_ERROR) {
            return NGX_HTTP_INTERNAL_SERVER_ERROR;
        }

        if (rc == NGX_OK) {
            send_proxy_request(p);
            return NGX_OK;
        }

        if (rc == NGX_AGAIN && p->upstream.connection) {
            return NGX_OK;
        }

    } while (p->upstream.tries);

    return NGX_HTTP_BAD_GATEWAY;
}


#if 0

ngx_http_proxy_connect()
    do {
        ngx_event_connect_peer()
        if error
            return error
        if ok
            return ok
        if again
            return again

        /* next */
    while (tries)
}


ngx_http_proxy_send_request(ngx_event_t *wev)
    for ( ;; ) {
       send
       if ok
          ???
       if again
          return
       if error
          close
          ngx_http_proxy_connect()
          if ok
              continue
          if error
              return
          if again
              return
    }

#endif


static size_t ngx_http_proxy_log_error(void *data, char *buf, size_t len)
{
    ngx_http_proxy_ctx_t *p = data;

    return ngx_snprintf(buf, len,
            " while %s, upstream: %s, client: %s, URL: %s",
            p->action,
            p->upstream.peers->peers[p->upstream.cur_peer].addr_port_text.data,
            p->request->connection->addr_text.data,
            p->request->unparsed_uri.data);
}