2 * uclient - ustream based protocol client library
4 * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
6 * Permission to use, copy, modify, and/or distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 #include <sys/socket.h>
25 #include <libubox/ustream.h>
26 #include <libubox/ustream-ssl.h>
27 #include <libubox/usock.h>
28 #include <libubox/blobmsg.h>
31 #include "uclient-utils.h"
32 #include "uclient-backend.h"
52 HTTP_STATE_HEADERS_SENT,
53 HTTP_STATE_REQUEST_DONE,
54 HTTP_STATE_RECV_HEADERS,
59 static const char * const request_types[__REQ_MAX] = {
64 [REQ_DELETE] = "DELETE",
70 const struct ustream_ssl_ops *ssl_ops;
71 struct ustream_ssl_ctx *ssl_ctx;
74 struct ustream_fd ufd;
75 struct ustream_ssl ussl;
77 struct uloop_timeout disconnect_t;
80 bool ssl_require_validation;
83 bool connection_close;
85 enum request_type req_type;
86 enum http_state state;
88 enum auth_type auth_type;
98 struct blob_buf headers;
108 static const char * const uclient_http_prefix[] = {
109 [PREFIX_HTTP] = "http://",
110 [PREFIX_HTTPS] = "https://",
111 [__PREFIX_MAX] = NULL
114 static int uclient_http_connect(struct uclient *cl);
116 static int uclient_do_connect(struct uclient_http *uh, const char *port)
121 if (uh->uc.url->port)
122 port = uh->uc.url->port;
124 memset(&uh->uc.remote_addr, 0, sizeof(uh->uc.remote_addr));
126 fd = usock_inet(USOCK_TCP | uh->usock_flags, uh->uc.url->host, port, &uh->uc.remote_addr);
130 fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK);
131 ustream_fd_init(&uh->ufd, fd);
133 sl = sizeof(uh->uc.local_addr);
134 memset(&uh->uc.local_addr, 0, sl);
135 getsockname(fd, &uh->uc.local_addr.sa, &sl);
140 static void uclient_http_disconnect(struct uclient_http *uh)
142 uloop_timeout_cancel(&uh->disconnect_t);
147 ustream_free(&uh->ussl.stream);
148 ustream_free(&uh->ufd.stream);
149 close(uh->ufd.fd.fd);
153 static void uclient_http_free_url_state(struct uclient *cl)
155 struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
157 uh->auth_type = AUTH_TYPE_UNKNOWN;
160 uclient_http_disconnect(uh);
163 static void uclient_http_error(struct uclient_http *uh, int code)
165 uh->state = HTTP_STATE_ERROR;
167 ustream_state_change(uh->us);
168 uclient_backend_set_error(&uh->uc, code);
171 static void uclient_http_request_disconnect(struct uclient *cl)
173 struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
179 uh->disconnect = true;
180 uloop_timeout_set(&uh->disconnect_t, 1);
183 static void uclient_notify_eof(struct uclient_http *uh)
185 struct ustream *us = uh->us;
191 if (!us->eof && !us->write_error)
194 if (ustream_pending_data(us, false))
198 if (uh->content_length < 0 && uh->read_chunked >= 0)
199 uh->uc.data_eof = true;
201 uclient_backend_set_eof(&uh->uc);
203 if (uh->connection_close)
204 uclient_http_request_disconnect(&uh->uc);
207 static void uclient_http_reset_state(struct uclient_http *uh)
210 uclient_backend_reset_state(&uh->uc);
211 uh->read_chunked = -1;
212 uh->content_length = -1;
214 uh->disconnect = false;
215 uh->connection_close = false;
216 uh->state = HTTP_STATE_INIT;
218 if (uh->auth_type == AUTH_TYPE_UNKNOWN && !uh->uc.url->auth)
219 uh->auth_type = AUTH_TYPE_NONE;
222 static void uclient_http_init_request(struct uclient_http *uh)
225 uclient_http_reset_state(uh);
226 blob_buf_init(&uh->meta, 0);
229 static enum auth_type
230 uclient_http_update_auth_type(struct uclient_http *uh)
233 return AUTH_TYPE_NONE;
235 if (!strncasecmp(uh->auth_str, "basic", 5))
236 return AUTH_TYPE_BASIC;
238 if (!strncasecmp(uh->auth_str, "digest", 6))
239 return AUTH_TYPE_DIGEST;
241 return AUTH_TYPE_NONE;
244 static void uclient_http_process_headers(struct uclient_http *uh)
247 HTTP_HDR_TRANSFER_ENCODING,
249 HTTP_HDR_CONTENT_LENGTH,
253 static const struct blobmsg_policy hdr_policy[__HTTP_HDR_MAX] = {
254 #define hdr(_name) { .name = _name, .type = BLOBMSG_TYPE_STRING }
255 [HTTP_HDR_TRANSFER_ENCODING] = hdr("transfer-encoding"),
256 [HTTP_HDR_CONNECTION] = hdr("connection"),
257 [HTTP_HDR_CONTENT_LENGTH] = hdr("content-length"),
258 [HTTP_HDR_AUTH] = hdr("www-authenticate"),
261 struct blob_attr *tb[__HTTP_HDR_MAX];
262 struct blob_attr *cur;
264 blobmsg_parse(hdr_policy, __HTTP_HDR_MAX, tb, blob_data(uh->meta.head), blob_len(uh->meta.head));
266 cur = tb[HTTP_HDR_TRANSFER_ENCODING];
267 if (cur && strstr(blobmsg_data(cur), "chunked"))
268 uh->read_chunked = 0;
270 cur = tb[HTTP_HDR_CONNECTION];
271 if (cur && strstr(blobmsg_data(cur), "close"))
272 uh->connection_close = true;
274 cur = tb[HTTP_HDR_CONTENT_LENGTH];
276 uh->content_length = strtoul(blobmsg_data(cur), NULL, 10);
278 cur = tb[HTTP_HDR_AUTH];
281 uh->auth_str = strdup(blobmsg_data(cur));
284 uh->auth_type = uclient_http_update_auth_type(uh);
288 uclient_http_add_auth_basic(struct uclient_http *uh)
290 struct uclient_url *url = uh->uc.url;
291 int auth_len = strlen(url->auth);
297 auth_buf = alloca(base64_len(auth_len) + 1);
298 base64_encode(url->auth, auth_len, auth_buf);
299 ustream_printf(uh->us, "Authorization: Basic %s\r\n", auth_buf);
302 static char *digest_unquote_sep(char **str)
304 char *cur = *str + 1;
336 static char *digest_sep(char **str)
341 next = strchr(*str, ',');
346 *str += strlen(*str);
352 static bool strmatch(char **str, const char *prefix)
354 int len = strlen(prefix);
356 if (strncmp(*str, prefix, len) != 0 || (*str)[len] != '=')
364 get_cnonce(char *dest)
369 f = fopen("/dev/urandom", "r");
371 fread(&val, sizeof(val), 1, f);
375 bin_to_hex(dest, &val, sizeof(val));
378 static void add_field(char **buf, int *ofs, int *len, const char *name, const char *val)
380 int available = *len - *ofs;
388 required = strlen(name) + 4 + strlen(val) * 2;
389 if (required > available)
390 *len += required - available + 64;
392 *buf = realloc(*buf, *len);
397 cur += sprintf(cur, ", %s=\"", name);
399 while ((next = strchr(val, '"'))) {
401 memcpy(cur, val, next - val);
405 cur += sprintf(cur, "\\\"");
409 cur += sprintf(cur, "%s\"", val);
414 uclient_http_add_auth_digest(struct uclient_http *uh)
416 struct uclient_url *url = uh->uc.url;
417 const char *realm = NULL, *opaque = NULL;
418 const char *user, *password;
427 struct http_digest_data data = {
429 .cnonce = cnonce_str,
433 len = strlen(uh->auth_str) + 1;
438 strcpy(buf, uh->auth_str);
445 const char **dest = NULL;
448 while (*next && isspace(*next))
451 if (strmatch(&next, "realm"))
453 else if (strmatch(&next, "qop"))
455 else if (strmatch(&next, "nonce"))
457 else if (strmatch(&next, "opaque"))
459 else if (strmatch(&next, "stale") ||
460 strmatch(&next, "algorithm") ||
461 strmatch(&next, "auth-param")) {
464 } else if (strmatch(&next, "domain") ||
465 strmatch(&next, "qop-options"))
472 *dest = digest_unquote_sep(&next);
475 if (!realm || !data.qop || !data.nonce)
478 sprintf(nc_str, "%08x", uh->nc++);
479 get_cnonce(cnonce_str);
482 data.uri = url->location;
483 data.method = request_types[uh->req_type];
485 password = strchr(url->auth, ':');
489 len = password - url->auth;
493 user_buf = alloca(len + 1);
494 strncpy(user_buf, url->auth, len);
503 http_digest_calculate_auth_hash(ahash, user, realm, password);
504 http_digest_calculate_response(hash, &data);
510 add_field(&buf, &ofs, &len, "username", user);
511 add_field(&buf, &ofs, &len, "realm", realm);
512 add_field(&buf, &ofs, &len, "nonce", data.nonce);
513 add_field(&buf, &ofs, &len, "uri", data.uri);
514 add_field(&buf, &ofs, &len, "cnonce", data.cnonce);
515 add_field(&buf, &ofs, &len, "response", hash);
517 add_field(&buf, &ofs, &len, "opaque", opaque);
519 ustream_printf(uh->us, "Authorization: Digest nc=%s, qop=%s%s\r\n", data.nc, data.qop, buf);
524 uclient_http_add_auth_header(struct uclient_http *uh)
526 if (!uh->uc.url->auth)
529 switch (uh->auth_type) {
530 case AUTH_TYPE_UNKNOWN:
533 case AUTH_TYPE_BASIC:
534 uclient_http_add_auth_basic(uh);
536 case AUTH_TYPE_DIGEST:
537 uclient_http_add_auth_digest(uh);
543 uclient_http_send_headers(struct uclient_http *uh)
545 struct uclient_url *url = uh->uc.url;
546 struct blob_attr *cur;
547 enum request_type req_type = uh->req_type;
550 if (uh->state >= HTTP_STATE_HEADERS_SENT)
553 if (uh->uc.proxy_url)
554 url = uh->uc.proxy_url;
556 ustream_printf(uh->us,
559 request_types[req_type],
560 url->location, url->host);
562 blobmsg_for_each_attr(cur, uh->headers.head, rem)
563 ustream_printf(uh->us, "%s: %s\r\n", blobmsg_name(cur), (char *) blobmsg_data(cur));
565 if (uh->req_type == REQ_POST || uh->req_type == REQ_PUT)
566 ustream_printf(uh->us, "Transfer-Encoding: chunked\r\n");
568 uclient_http_add_auth_header(uh);
570 ustream_printf(uh->us, "\r\n");
572 uh->state = HTTP_STATE_HEADERS_SENT;
575 static void uclient_http_headers_complete(struct uclient_http *uh)
577 enum auth_type auth_type = uh->auth_type;
578 int seq = uh->uc.seq;
580 uh->state = HTTP_STATE_RECV_DATA;
581 uh->uc.meta = uh->meta.head;
582 uclient_http_process_headers(uh);
584 if (auth_type == AUTH_TYPE_UNKNOWN && uh->uc.status_code == 401 &&
585 (uh->req_type == REQ_HEAD || uh->req_type == REQ_GET)) {
586 uclient_http_connect(&uh->uc);
587 uclient_http_send_headers(uh);
588 uh->state = HTTP_STATE_REQUEST_DONE;
592 if (uh->uc.cb->header_done)
593 uh->uc.cb->header_done(&uh->uc);
595 if (uh->eof || seq != uh->uc.seq)
598 if (uh->req_type == REQ_HEAD || uh->uc.status_code == 204) {
600 uclient_notify_eof(uh);
604 static void uclient_parse_http_line(struct uclient_http *uh, char *data)
609 if (uh->state == HTTP_STATE_REQUEST_DONE) {
618 code = strsep(&data, " ");
622 uh->uc.status_code = strtoul(code, &sep, 10);
626 uh->state = HTTP_STATE_RECV_HEADERS;
631 uclient_http_headers_complete(uh);
635 sep = strchr(data, ':');
641 for (name = data; *name; name++)
642 *name = tolower(*name);
645 while (isspace(*sep))
648 blobmsg_add_string(&uh->meta, name, sep);
652 uh->uc.status_code = 400;
654 uclient_notify_eof(uh);
657 static void __uclient_notify_read(struct uclient_http *uh)
659 struct uclient *uc = &uh->uc;
660 unsigned int seq = uh->seq;
664 if (uh->state < HTTP_STATE_REQUEST_DONE || uh->state == HTTP_STATE_ERROR)
667 data = ustream_get_read_buf(uh->us, &len);
671 if (uh->state < HTTP_STATE_RECV_DATA) {
676 sep = strchr(data, '\n');
681 if (sep > data && sep[-1] == '\r')
684 /* Check for multi-line HTTP headers */
689 if (isspace(*next) && *next != '\r' && *next != '\n') {
698 cur_len = next - data;
699 uclient_parse_http_line(uh, data);
703 ustream_consume(uh->us, cur_len);
709 data = ustream_get_read_buf(uh->us, &len);
710 } while (data && uh->state < HTTP_STATE_RECV_DATA);
719 if (uh->state == HTTP_STATE_RECV_DATA) {
720 /* Now it's uclient user turn to read some data */
721 uloop_timeout_cancel(&uc->connection_timeout);
723 if (uc->cb->data_read)
724 uc->cb->data_read(uc);
728 static void __uclient_notify_write(struct uclient_http *uh)
730 struct uclient *uc = &uh->uc;
732 if (uc->cb->data_sent)
733 uc->cb->data_sent(uc);
736 static void uclient_notify_read(struct ustream *us, int bytes)
738 struct uclient_http *uh = container_of(us, struct uclient_http, ufd.stream);
740 __uclient_notify_read(uh);
743 static void uclient_notify_write(struct ustream *us, int bytes)
745 struct uclient_http *uh = container_of(us, struct uclient_http, ufd.stream);
747 __uclient_notify_write(uh);
750 static void uclient_notify_state(struct ustream *us)
752 struct uclient_http *uh = container_of(us, struct uclient_http, ufd.stream);
754 if (uh->ufd.stream.write_error) {
755 uclient_http_error(uh, UCLIENT_ERROR_CONNECT);
758 uclient_notify_eof(uh);
761 static int uclient_setup_http(struct uclient_http *uh)
763 struct ustream *us = &uh->ufd.stream;
769 us->string_data = true;
770 us->notify_state = uclient_notify_state;
771 us->notify_read = uclient_notify_read;
772 us->notify_write = uclient_notify_write;
774 ret = uclient_do_connect(uh, "80");
776 return UCLIENT_ERROR_CONNECT;
781 static void uclient_ssl_notify_read(struct ustream *us, int bytes)
783 struct uclient_http *uh = container_of(us, struct uclient_http, ussl.stream);
785 __uclient_notify_read(uh);
788 static void uclient_ssl_notify_write(struct ustream *us, int bytes)
790 struct uclient_http *uh = container_of(us, struct uclient_http, ussl.stream);
792 __uclient_notify_write(uh);
795 static void uclient_ssl_notify_state(struct ustream *us)
797 struct uclient_http *uh = container_of(us, struct uclient_http, ussl.stream);
799 uclient_notify_eof(uh);
802 static void uclient_ssl_notify_error(struct ustream_ssl *ssl, int error, const char *str)
804 struct uclient_http *uh = container_of(ssl, struct uclient_http, ussl);
806 uclient_http_error(uh, UCLIENT_ERROR_CONNECT);
809 static void uclient_ssl_notify_verify_error(struct ustream_ssl *ssl, int error, const char *str)
811 struct uclient_http *uh = container_of(ssl, struct uclient_http, ussl);
813 if (!uh->ssl_require_validation)
816 uclient_http_error(uh, UCLIENT_ERROR_SSL_INVALID_CERT);
819 static void uclient_ssl_notify_connected(struct ustream_ssl *ssl)
821 struct uclient_http *uh = container_of(ssl, struct uclient_http, ussl);
823 if (!uh->ssl_require_validation)
826 if (!uh->ussl.valid_cn)
827 uclient_http_error(uh, UCLIENT_ERROR_SSL_CN_MISMATCH);
830 static int uclient_setup_https(struct uclient_http *uh)
832 struct ustream *us = &uh->ussl.stream;
839 return UCLIENT_ERROR_MISSING_SSL_CONTEXT;
841 ret = uclient_do_connect(uh, "443");
843 return UCLIENT_ERROR_CONNECT;
845 us->string_data = true;
846 us->notify_state = uclient_ssl_notify_state;
847 us->notify_read = uclient_ssl_notify_read;
848 us->notify_write = uclient_ssl_notify_write;
849 uh->ussl.notify_error = uclient_ssl_notify_error;
850 uh->ussl.notify_verify_error = uclient_ssl_notify_verify_error;
851 uh->ussl.notify_connected = uclient_ssl_notify_connected;
852 uh->ussl.server_name = uh->uc.url->host;
853 uh->ssl_ops->init(&uh->ussl, &uh->ufd.stream, uh->ssl_ctx, false);
854 uh->ssl_ops->set_peer_cn(&uh->ussl, uh->uc.url->host);
859 static int uclient_http_connect(struct uclient *cl)
861 struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
864 if (!cl->eof || uh->disconnect || uh->connection_close)
865 uclient_http_disconnect(uh);
867 uclient_http_init_request(uh);
872 uh->ssl = cl->url->prefix == PREFIX_HTTPS;
875 ret = uclient_setup_https(uh);
877 ret = uclient_setup_http(uh);
882 static void uclient_http_disconnect_cb(struct uloop_timeout *timeout)
884 struct uclient_http *uh = container_of(timeout, struct uclient_http, disconnect_t);
886 uclient_http_disconnect(uh);
889 static struct uclient *uclient_http_alloc(void)
891 struct uclient_http *uh;
893 uh = calloc_a(sizeof(*uh));
894 uh->disconnect_t.cb = uclient_http_disconnect_cb;
895 blob_buf_init(&uh->headers, 0);
900 static void uclient_http_free_ssl_ctx(struct uclient_http *uh)
906 static void uclient_http_free(struct uclient *cl)
908 struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
910 uclient_http_free_url_state(cl);
911 uclient_http_free_ssl_ctx(uh);
912 blob_buf_free(&uh->headers);
913 blob_buf_free(&uh->meta);
918 uclient_http_set_request_type(struct uclient *cl, const char *type)
920 struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
923 if (cl->backend != &uclient_backend_http)
926 if (uh->state > HTTP_STATE_INIT)
929 for (i = 0; i < ARRAY_SIZE(request_types); i++) {
930 if (strcmp(request_types[i], type) != 0)
941 uclient_http_reset_headers(struct uclient *cl)
943 struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
945 blob_buf_init(&uh->headers, 0);
951 uclient_http_set_header(struct uclient *cl, const char *name, const char *value)
953 struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
955 if (cl->backend != &uclient_backend_http)
958 if (uh->state > HTTP_STATE_INIT)
961 blobmsg_add_string(&uh->headers, name, value);
966 uclient_http_send_data(struct uclient *cl, const char *buf, unsigned int len)
968 struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
970 if (uh->state >= HTTP_STATE_REQUEST_DONE)
973 uclient_http_send_headers(uh);
976 ustream_printf(uh->us, "%X\r\n", len);
977 ustream_write(uh->us, buf, len, false);
978 ustream_printf(uh->us, "\r\n");
985 uclient_http_request_done(struct uclient *cl)
987 struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
989 if (uh->state >= HTTP_STATE_REQUEST_DONE)
992 uclient_http_send_headers(uh);
993 if (uh->req_type == REQ_POST || uh->req_type == REQ_PUT)
994 ustream_printf(uh->us, "0\r\n\r\n");
995 uh->state = HTTP_STATE_REQUEST_DONE;
1001 uclient_http_read(struct uclient *cl, char *buf, unsigned int len)
1003 struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
1005 char *data, *data_end;
1007 if (uh->state < HTTP_STATE_RECV_DATA || !uh->us)
1010 data = ustream_get_read_buf(uh->us, &read_len);
1011 if (!data || !read_len)
1014 data_end = data + read_len;
1017 if (uh->read_chunked == 0) {
1020 if (data[0] == '\r' && data[1] == '\n') {
1025 sep = strstr(data, "\r\n");
1030 uh->read_chunked = strtoul(data, NULL, 16);
1032 read_len += sep + 2 - data;
1035 if (!uh->read_chunked) {
1037 uh->uc.data_eof = true;
1041 if (len > data_end - data)
1042 len = data_end - data;
1044 if (uh->read_chunked >= 0) {
1045 if (len > uh->read_chunked)
1046 len = uh->read_chunked;
1048 uh->read_chunked -= len;
1049 } else if (uh->content_length >= 0) {
1050 if (len > uh->content_length)
1051 len = uh->content_length;
1053 uh->content_length -= len;
1054 if (!uh->content_length) {
1056 uh->uc.data_eof = true;
1062 memcpy(buf, data, len);
1066 ustream_consume(uh->us, read_len);
1068 uclient_notify_eof(uh);
1070 /* Now that we consumed something and if this isn't EOF, start timer again */
1071 if (!uh->uc.eof && !cl->connection_timeout.pending)
1072 uloop_timeout_set(&cl->connection_timeout, cl->timeout_msecs);
1077 int uclient_http_redirect(struct uclient *cl)
1079 struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
1080 struct blobmsg_policy location = {
1082 .type = BLOBMSG_TYPE_STRING,
1084 struct uclient_url *url = cl->url;
1085 struct blob_attr *tb;
1087 if (cl->backend != &uclient_backend_http)
1090 switch (cl->status_code) {
1099 blobmsg_parse(&location, 1, &tb, blob_data(uh->meta.head), blob_len(uh->meta.head));
1103 url = uclient_get_url(blobmsg_data(tb), url->auth);
1109 if (uclient_http_connect(cl))
1112 uclient_http_request_done(cl);
1117 int uclient_http_set_ssl_ctx(struct uclient *cl, const struct ustream_ssl_ops *ops,
1118 struct ustream_ssl_ctx *ctx, bool require_validation)
1120 struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
1122 if (cl->backend != &uclient_backend_http)
1125 uclient_http_free_url_state(cl);
1127 uclient_http_free_ssl_ctx(uh);
1130 uh->ssl_require_validation = !!ctx && require_validation;
1135 int uclient_http_set_address_family(struct uclient *cl, int af)
1137 struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
1139 if (cl->backend != &uclient_backend_http)
1144 uh->usock_flags = USOCK_IPV4ONLY;
1147 uh->usock_flags = USOCK_IPV6ONLY;
1150 uh->usock_flags = 0;
1157 const struct uclient_backend uclient_backend_http = {
1158 .prefix = uclient_http_prefix,
1160 .alloc = uclient_http_alloc,
1161 .free = uclient_http_free,
1162 .connect = uclient_http_connect,
1163 .disconnect = uclient_http_request_disconnect,
1164 .update_url = uclient_http_free_url_state,
1165 .update_proxy_url = uclient_http_free_url_state,
1167 .read = uclient_http_read,
1168 .write = uclient_http_send_data,
1169 .request = uclient_http_request_done,