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
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
***************************************************************************/
#include "curl_setup.h"
#ifdef USE_QUICHE
#include <quiche.h>
#include <openssl/err.h>
#include "urldata.h"
#include "sendf.h"
#include "strdup.h"
#include "rand.h"
#include "quic.h"
/* The last 3 #include files should be in this order */
#include "curl_printf.h"
#include "curl_memory.h"
#include "memdebug.h"
#define QUIC_MAX_STREAMS (256*1024)
#define QUIC_MAX_DATA (1*1024*1024)
#define QUIC_IDLE_TIMEOUT 60 * 1000 /* milliseconds */
static CURLcode process_ingress(struct connectdata *conn,
curl_socket_t sockfd);
static CURLcode flush_egress(struct connectdata *conn, curl_socket_t sockfd);
static Curl_recv quic_stream_recv;
static Curl_send quic_stream_send;
CURLcode Curl_quic_connect(struct connectdata *conn, curl_socket_t sockfd,
const struct sockaddr *addr, socklen_t addrlen)
{
CURLcode result;
struct quicsocket *qs = &conn->quic;
(void)addr;
(void)addrlen;
infof(conn->data, "Connecting socket %d over QUIC\n", sockfd);
qs->cfg = quiche_config_new(QUICHE_PROTOCOL_VERSION);
if(!qs->cfg)
return CURLE_FAILED_INIT; /* TODO: better return code */
quiche_config_set_idle_timeout(qs->cfg, QUIC_IDLE_TIMEOUT);
quiche_config_set_initial_max_data(qs->cfg, QUIC_MAX_DATA);
quiche_config_set_initial_max_stream_data_bidi_local(qs->cfg, QUIC_MAX_DATA);
quiche_config_set_initial_max_stream_data_bidi_remote(qs->cfg, QUIC_MAX_DATA);
quiche_config_set_initial_max_stream_data_uni(qs->cfg, QUIC_MAX_DATA);
quiche_config_set_initial_max_streams_bidi(qs->cfg, QUIC_MAX_STREAMS);
quiche_config_set_initial_max_streams_uni(qs->cfg, QUIC_MAX_STREAMS);
quiche_config_set_application_protos(qs->cfg,
(uint8_t *)
QUICHE_H3_APPLICATION_PROTOCOL,
sizeof(QUICHE_H3_APPLICATION_PROTOCOL)
- 1);
result = Curl_rand(conn->data, qs->scid, sizeof(qs->scid));
if(result)
return result;
qs->conn = quiche_connect(conn->host.name, (const uint8_t *) qs->scid,
sizeof(qs->scid), qs->cfg);
if(!qs->conn)
return CURLE_FAILED_INIT; /* TODO: better return code */
result = flush_egress(conn, sockfd);
if(result)
return CURLE_FAILED_INIT; /* TODO: better return code */
infof(conn->data, "Sent QUIC client Initial\n");
return CURLE_OK;
}
CURLcode Curl_quic_is_connected(struct connectdata *conn, int sockindex,
bool *done)
{
CURLcode result;
struct quicsocket *qs = &conn->quic;
curl_socket_t sockfd = conn->sock[sockindex];
result = process_ingress(conn, sockfd);
if(result)
return result;
result = flush_egress(conn, sockfd);
if(result)
return result;
if(quiche_conn_is_established(qs->conn)) {
conn->recv[sockindex] = quic_stream_recv;
conn->send[sockindex] = quic_stream_send;
*done = TRUE;
}
return CURLE_OK;
}
static CURLcode process_ingress(struct connectdata *conn, int sockfd)
{
ssize_t recvd;
struct quicsocket *qs = &conn->quic;
static uint8_t buf[65535];
do {
recvd = recv(sockfd, buf, sizeof(buf), 0);
if((recvd < 0) && ((errno == EAGAIN) || (errno == EWOULDBLOCK)))
break;
if(recvd < 0) {
failf(conn->data, "quiche: recv() unexpectedly returned %d", recvd);
return CURLE_RECV_ERROR;
}
recvd = quiche_conn_recv(qs->conn, buf, recvd);
if(recvd == QUICHE_ERR_DONE)
break;
if(recvd < 0) {
failf(conn->data, "quiche_conn_recv() == %d", recvd);
return CURLE_RECV_ERROR;
}
} while(1);
return CURLE_OK;
}
static CURLcode flush_egress(struct connectdata *conn, int sockfd)
{
ssize_t sent;
struct quicsocket *qs = &conn->quic;
static uint8_t out[1200];
do {
sent = quiche_conn_send(qs->conn, out, sizeof(out));
if(sent == QUICHE_ERR_DONE)
break;
if(sent < 0)
return CURLE_SEND_ERROR;
sent = send(sockfd, out, sent, 0);
if(sent < 0)
return CURLE_SEND_ERROR;
} while(1);
return CURLE_OK;
}
static ssize_t quic_stream_recv(struct connectdata *conn,
int sockindex,
char *buf,
size_t buffersize,
CURLcode *curlcode)
{
bool fin;
ssize_t recvd;
struct quicsocket *qs = &conn->quic;
curl_socket_t sockfd = conn->sock[sockindex];
if(process_ingress(conn, sockfd)) {
*curlcode = CURLE_RECV_ERROR;
return -1;
}
recvd = quiche_conn_stream_recv(qs->conn, 0, (uint8_t *) buf, buffersize, &fin);
if(recvd == QUICHE_ERR_DONE) {
*curlcode = CURLE_AGAIN;
return -1;
}
if(recvd < 0) {
*curlcode = CURLE_RECV_ERROR;
return -1;
}
*curlcode = CURLE_OK;
return recvd;
}
static ssize_t quic_stream_send(struct connectdata *conn,
int sockindex,
const void *mem,
size_t len,
CURLcode *curlcode)
{
ssize_t sent;
struct quicsocket *qs = &conn->quic;
curl_socket_t sockfd = conn->sock[sockindex];
sent = quiche_conn_stream_send(qs->conn, 0, mem, len, true);
if(sent < 0) {
*curlcode = CURLE_SEND_ERROR;
return -1;
}
if(flush_egress(conn, sockfd)) {
*curlcode = CURLE_SEND_ERROR;
return -1;
}
*curlcode = CURLE_OK;
return sent;
}
/*
* Store quiche version info in this buffer, Prefix with a space. Return total
* length written.
*/
int Curl_quic_ver(char *p, size_t len)
{
return msnprintf(p, len, " quiche");
}
#endif
|
