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
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include "src/core/lib/iomgr/port.h"
#ifdef GRPC_WINSOCK_SOCKET
#include "src/core/lib/iomgr/sockaddr.h"
#include "src/core/lib/iomgr/resolve_address.h"
#include <inttypes.h>
#include <string.h>
#include <sys/types.h>
#include <grpc/support/alloc.h>
#include <grpc/support/host_port.h>
#include <grpc/support/log.h>
#include <grpc/support/log_windows.h>
#include <grpc/support/string_util.h>
#include <grpc/support/thd.h>
#include <grpc/support/time.h>
#include "src/core/lib/iomgr/block_annotate.h"
#include "src/core/lib/iomgr/executor.h"
#include "src/core/lib/iomgr/iomgr_internal.h"
#include "src/core/lib/iomgr/sockaddr_utils.h"
#include "src/core/lib/support/string.h"
typedef struct {
char* name;
char* default_port;
grpc_closure request_closure;
grpc_closure* on_done;
grpc_resolved_addresses** addresses;
} request;
static grpc_error* blocking_resolve_address_impl(
const char* name, const char* default_port,
grpc_resolved_addresses** addresses) {
grpc_core::ExecCtx exec_ctx;
struct addrinfo hints;
struct addrinfo *result = NULL, *resp;
char* host;
char* port;
int s;
size_t i;
grpc_error* error = GRPC_ERROR_NONE;
/* parse name, splitting it into host and port parts */
gpr_split_host_port(name, &host, &port);
if (host == NULL) {
char* msg;
gpr_asprintf(&msg, "unparseable host:port: '%s'", name);
error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
gpr_free(msg);
goto done;
}
if (port == NULL) {
if (default_port == NULL) {
char* msg;
gpr_asprintf(&msg, "no port in name '%s'", name);
error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
gpr_free(msg);
goto done;
}
port = gpr_strdup(default_port);
}
/* Call getaddrinfo */
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC; /* ipv4 or ipv6 */
hints.ai_socktype = SOCK_STREAM; /* stream socket */
hints.ai_flags = AI_PASSIVE; /* for wildcard IP address */
GRPC_SCHEDULING_START_BLOCKING_REGION;
s = getaddrinfo(host, port, &hints, &result);
GRPC_SCHEDULING_END_BLOCKING_REGION;
if (s != 0) {
error = GRPC_WSA_ERROR(WSAGetLastError(), "getaddrinfo");
goto done;
}
/* Success path: set addrs non-NULL, fill it in */
(*addresses) =
(grpc_resolved_addresses*)gpr_malloc(sizeof(grpc_resolved_addresses));
(*addresses)->naddrs = 0;
for (resp = result; resp != NULL; resp = resp->ai_next) {
(*addresses)->naddrs++;
}
(*addresses)->addrs = (grpc_resolved_address*)gpr_malloc(
sizeof(grpc_resolved_address) * (*addresses)->naddrs);
i = 0;
for (resp = result; resp != NULL; resp = resp->ai_next) {
memcpy(&(*addresses)->addrs[i].addr, resp->ai_addr, resp->ai_addrlen);
(*addresses)->addrs[i].len = resp->ai_addrlen;
i++;
}
{
for (i = 0; i < (*addresses)->naddrs; i++) {
char* buf;
grpc_sockaddr_to_string(&buf, &(*addresses)->addrs[i], 0);
gpr_free(buf);
}
}
done:
gpr_free(host);
gpr_free(port);
if (result) {
freeaddrinfo(result);
}
return error;
}
grpc_error* (*grpc_blocking_resolve_address)(
const char* name, const char* default_port,
grpc_resolved_addresses** addresses) = blocking_resolve_address_impl;
/* Callback to be passed to grpc_executor to asynch-ify
* grpc_blocking_resolve_address */
static void do_request_thread(void* rp, grpc_error* error) {
request* r = (request*)rp;
if (error == GRPC_ERROR_NONE) {
error =
grpc_blocking_resolve_address(r->name, r->default_port, r->addresses);
} else {
GRPC_ERROR_REF(error);
}
GRPC_CLOSURE_SCHED(r->on_done, error);
gpr_free(r->name);
gpr_free(r->default_port);
gpr_free(r);
}
void grpc_resolved_addresses_destroy(grpc_resolved_addresses* addrs) {
if (addrs != NULL) {
gpr_free(addrs->addrs);
}
gpr_free(addrs);
}
static void resolve_address_impl(const char* name, const char* default_port,
grpc_pollset_set* interested_parties,
grpc_closure* on_done,
grpc_resolved_addresses** addresses) {
request* r = (request*)gpr_malloc(sizeof(request));
GRPC_CLOSURE_INIT(&r->request_closure, do_request_thread, r,
grpc_executor_scheduler(GRPC_EXECUTOR_SHORT));
r->name = gpr_strdup(name);
r->default_port = gpr_strdup(default_port);
r->on_done = on_done;
r->addresses = addresses;
GRPC_CLOSURE_SCHED(&r->request_closure, GRPC_ERROR_NONE);
}
void (*grpc_resolve_address)(
const char* name, const char* default_port,
grpc_pollset_set* interested_parties, grpc_closure* on_done,
grpc_resolved_addresses** addresses) = resolve_address_impl;
#endif
|
