aboutsummaryrefslogtreecommitdiffhomepage
path: root/src/core/surface/server_chttp2.c
blob: 7b5c2f227b3425bbcda3b7191cdf77e46082bb51 (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
/*
 *
 * Copyright 2015, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#include <grpc/grpc.h>

#include "src/core/channel/http_server_filter.h"
#include "src/core/iomgr/resolve_address.h"
#include "src/core/iomgr/tcp_server.h"
#include "src/core/surface/server.h"
#include "src/core/transport/chttp2_transport.h"
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include <grpc/support/useful.h>

static grpc_transport_setup_result setup_transport(void *server,
                                                   grpc_transport *transport,
                                                   grpc_mdctx *mdctx) {
  static grpc_channel_filter const *extra_filters[] = {
      &grpc_http_server_filter};
  return grpc_server_setup_transport(server, transport, extra_filters,
                                     GPR_ARRAY_SIZE(extra_filters), mdctx);
}

static void new_transport(void *server, grpc_endpoint *tcp) {
  /*
   * Beware that the call to grpc_create_chttp2_transport() has to happen before
   * grpc_tcp_server_destroy(). This is fine here, but similar code
   * asynchronously doing a handshake instead of calling grpc_tcp_server_start()
   * (as in server_secure_chttp2.c) needs to add synchronization to avoid this
   * case.
   */
  grpc_create_chttp2_transport(setup_transport, server,
                               grpc_server_get_channel_args(server), tcp, NULL,
                               0, grpc_mdctx_create(), 0);
}

/* Server callback: start listening on our ports */
static void start(grpc_server *server, void *tcpp, grpc_pollset **pollsets,
                  size_t pollset_count) {
  grpc_tcp_server *tcp = tcpp;
  grpc_tcp_server_start(tcp, pollsets, pollset_count, new_transport, server);
}

/* Server callback: destroy the tcp listener (so we don't generate further
   callbacks) */
static void destroy(grpc_server *server, void *tcpp) {
  grpc_tcp_server *tcp = tcpp;
  grpc_tcp_server_destroy(tcp, grpc_server_listener_destroy_done, server);
}

int grpc_server_add_http2_port(grpc_server *server, const char *addr) {
  grpc_resolved_addresses *resolved = NULL;
  grpc_tcp_server *tcp = NULL;
  size_t i;
  unsigned count = 0;
  int port_num = -1;
  int port_temp;

  resolved = grpc_blocking_resolve_address(addr, "http");
  if (!resolved) {
    goto error;
  }

  tcp = grpc_tcp_server_create();
  if (!tcp) {
    goto error;
  }

  for (i = 0; i < resolved->naddrs; i++) {
    port_temp = grpc_tcp_server_add_port(
        tcp, (struct sockaddr *)&resolved->addrs[i].addr,
        resolved->addrs[i].len);
    if (port_temp >= 0) {
      if (port_num == -1) {
        port_num = port_temp;
      } else {
        GPR_ASSERT(port_num == port_temp);
      }
      count++;
    }
  }
  if (count == 0) {
    gpr_log(GPR_ERROR, "No address added out of total %d resolved",
            resolved->naddrs);
    goto error;
  }
  if (count != resolved->naddrs) {
    gpr_log(GPR_ERROR, "Only %d addresses added out of total %d resolved",
            count, resolved->naddrs);
  }
  grpc_resolved_addresses_destroy(resolved);

  /* Register with the server only upon success */
  grpc_server_add_listener(server, tcp, start, destroy);

  return port_num;

/* Error path: cleanup and return */
error:
  if (resolved) {
    grpc_resolved_addresses_destroy(resolved);
  }
  if (tcp) {
    grpc_tcp_server_destroy(tcp, NULL, NULL);
  }
  return 0;
}