branch: master
vquic.c
25536 bytesRaw
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 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.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.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
#include "curl_setup.h"
#include "urldata.h"
#include "vquic/vquic.h"
#include "curl_trc.h"
#if !defined(CURL_DISABLE_HTTP) && defined(USE_HTTP3)
#ifdef HAVE_NETINET_UDP_H
#include <netinet/udp.h>
#endif
#ifdef USE_NGHTTP3
#include <nghttp3/nghttp3.h>
#endif
#include "bufq.h"
#include "curlx/dynbuf.h"
#include "curlx/fopen.h"
#include "cfilters.h"
#include "vquic/curl_ngtcp2.h"
#include "vquic/curl_quiche.h"
#include "multiif.h"
#include "progress.h"
#include "rand.h"
#include "vquic/vquic_int.h"
#include "curlx/strerr.h"
#include "curlx/strparse.h"
#define NW_CHUNK_SIZE (64 * 1024)
#define NW_SEND_CHUNKS 1
int Curl_vquic_init(void)
{
#if defined(USE_NGTCP2) && defined(OPENSSL_QUIC_API2)
if(ngtcp2_crypto_ossl_init())
return 0;
#endif
return 1;
}
void Curl_quic_ver(char *p, size_t len)
{
#if defined(USE_NGTCP2) && defined(USE_NGHTTP3)
Curl_ngtcp2_ver(p, len);
#elif defined(USE_QUICHE)
Curl_quiche_ver(p, len);
#endif
}
CURLcode vquic_ctx_init(struct Curl_easy *data,
struct cf_quic_ctx *qctx)
{
Curl_bufq_init2(&qctx->sendbuf, NW_CHUNK_SIZE, NW_SEND_CHUNKS,
BUFQ_OPT_SOFT_LIMIT);
#if defined(__linux__) && defined(UDP_SEGMENT) && defined(HAVE_SENDMSG)
qctx->no_gso = FALSE;
#else
qctx->no_gso = TRUE;
#endif
#ifdef DEBUGBUILD
{
const char *p = getenv("CURL_DBG_QUIC_WBLOCK");
if(p) {
curl_off_t l;
if(!curlx_str_number(&p, &l, 100))
qctx->wblock_percent = (int)l;
}
}
#endif
vquic_ctx_set_time(qctx, Curl_pgrs_now(data));
return CURLE_OK;
}
void vquic_ctx_free(struct cf_quic_ctx *qctx)
{
Curl_bufq_free(&qctx->sendbuf);
}
void vquic_ctx_set_time(struct cf_quic_ctx *qctx,
const struct curltime *pnow)
{
qctx->last_op = *pnow;
}
void vquic_ctx_update_time(struct cf_quic_ctx *qctx,
const struct curltime *pnow)
{
qctx->last_op = *pnow;
}
static CURLcode send_packet_no_gso(struct Curl_cfilter *cf,
struct Curl_easy *data,
struct cf_quic_ctx *qctx,
const uint8_t *pkt, size_t pktlen,
size_t gsolen, size_t *psent);
static CURLcode do_sendmsg(struct Curl_cfilter *cf,
struct Curl_easy *data,
struct cf_quic_ctx *qctx,
const uint8_t *pkt, size_t pktlen, size_t gsolen,
size_t *psent)
{
CURLcode result = CURLE_OK;
#ifdef HAVE_SENDMSG
struct iovec msg_iov;
struct msghdr msg = { 0 };
ssize_t rv;
#if defined(__linux__) && defined(UDP_SEGMENT)
uint8_t msg_ctrl[32];
struct cmsghdr *cm;
#endif
*psent = 0;
msg_iov.iov_base = (uint8_t *)CURL_UNCONST(pkt);
msg_iov.iov_len = pktlen;
msg.msg_iov = &msg_iov;
msg.msg_iovlen = 1;
#if defined(__linux__) && defined(UDP_SEGMENT)
if(pktlen > gsolen) {
/* Only set this, when we need it. macOS, for example,
* does not seem to like a msg_control of length 0. */
memset(msg_ctrl, 0, sizeof(msg_ctrl));
msg.msg_control = msg_ctrl;
assert(sizeof(msg_ctrl) >= CMSG_SPACE(sizeof(int)));
msg.msg_controllen = CMSG_SPACE(sizeof(int));
cm = CMSG_FIRSTHDR(&msg);
cm->cmsg_level = SOL_UDP;
cm->cmsg_type = UDP_SEGMENT;
cm->cmsg_len = CMSG_LEN(sizeof(uint16_t));
*(uint16_t *)(void *)CMSG_DATA(cm) = gsolen & 0xffff;
}
#endif
while((rv = sendmsg(qctx->sockfd, &msg, 0)) == -1 && SOCKERRNO == SOCKEINTR)
;
if(!curlx_sztouz(rv, psent)) {
switch(SOCKERRNO) {
case EAGAIN:
#if EAGAIN != SOCKEWOULDBLOCK
case SOCKEWOULDBLOCK:
#endif
return CURLE_AGAIN;
case SOCKEMSGSIZE:
/* UDP datagram is too large; caused by PMTUD. Let it be lost. */
*psent = pktlen;
break;
case EIO:
if(pktlen > gsolen) {
/* GSO failure */
infof(data, "sendmsg() returned %zd (errno %d); disable GSO", rv,
SOCKERRNO);
qctx->no_gso = TRUE;
return send_packet_no_gso(cf, data, qctx, pkt, pktlen, gsolen, psent);
}
FALLTHROUGH();
default:
failf(data, "sendmsg() returned %zd (errno %d)", rv, SOCKERRNO);
result = CURLE_SEND_ERROR;
goto out;
}
}
else if(pktlen != *psent) {
failf(data, "sendmsg() sent only %zu/%zu bytes", *psent, pktlen);
result = CURLE_SEND_ERROR;
goto out;
}
#else
ssize_t rv;
(void)gsolen;
*psent = 0;
while((rv = swrite(qctx->sockfd, pkt, pktlen)) == -1 &&
SOCKERRNO == SOCKEINTR)
;
if(!curlx_sztouz(rv, psent)) {
if(SOCKERRNO == EAGAIN || SOCKERRNO == SOCKEWOULDBLOCK) {
result = CURLE_AGAIN;
goto out;
}
else {
if(SOCKERRNO != SOCKEMSGSIZE) {
failf(data, "send() returned %zd (errno %d)", rv, SOCKERRNO);
result = CURLE_SEND_ERROR;
goto out;
}
/* UDP datagram is too large; caused by PMTUD. Let it be lost. */
*psent = pktlen;
}
}
#endif
(void)cf;
out:
return result;
}
#ifdef CURLVERBOSE
#ifdef HAVE_SENDMSG
#define VQUIC_SEND_METHOD "sendmsg"
#else
#define VQUIC_SEND_METHOD "send"
#endif
#endif
static CURLcode send_packet_no_gso(struct Curl_cfilter *cf,
struct Curl_easy *data,
struct cf_quic_ctx *qctx,
const uint8_t *pkt, size_t pktlen,
size_t gsolen, size_t *psent)
{
const uint8_t *p, *end = pkt + pktlen;
size_t sent, len;
CURLcode result = CURLE_OK;
VERBOSE(size_t calls = 0);
*psent = 0;
for(p = pkt; p < end; p += gsolen) {
len = CURLMIN(gsolen, (size_t)(end - p));
result = do_sendmsg(cf, data, qctx, p, len, len, &sent);
if(result)
goto out;
*psent += sent;
VERBOSE(++calls);
}
out:
CURL_TRC_CF(data, cf, "vquic_%s(len=%zu, gso=%zu, calls=%zu)"
" -> %d, sent=%zu",
VQUIC_SEND_METHOD, pktlen, gsolen, calls, result, *psent);
return result;
}
static CURLcode vquic_send_packets(struct Curl_cfilter *cf,
struct Curl_easy *data,
struct cf_quic_ctx *qctx,
const uint8_t *pkt, size_t pktlen,
size_t gsolen, size_t *psent)
{
CURLcode result;
#ifdef DEBUGBUILD
/* simulate network blocking/partial writes */
if(qctx->wblock_percent > 0) {
unsigned char c;
*psent = 0;
Curl_rand(data, &c, 1);
if(c >= ((100 - qctx->wblock_percent) * 256 / 100)) {
CURL_TRC_CF(data, cf, "vquic_flush() simulate EWOULDBLOCK");
return CURLE_AGAIN;
}
}
#endif
if(qctx->no_gso && pktlen > gsolen) {
result = send_packet_no_gso(cf, data, qctx, pkt, pktlen, gsolen, psent);
}
else {
result = do_sendmsg(cf, data, qctx, pkt, pktlen, gsolen, psent);
CURL_TRC_CF(data, cf, "vquic_%s(len=%zu, gso=%zu, calls=1)"
" -> %d, sent=%zu",
VQUIC_SEND_METHOD, pktlen, gsolen, result, *psent);
}
if(!result)
qctx->last_io = qctx->last_op;
return result;
}
CURLcode vquic_flush(struct Curl_cfilter *cf, struct Curl_easy *data,
struct cf_quic_ctx *qctx)
{
const unsigned char *buf;
size_t blen, sent;
CURLcode result;
size_t gsolen;
while(Curl_bufq_peek(&qctx->sendbuf, &buf, &blen)) {
gsolen = qctx->gsolen;
if(qctx->split_len) {
gsolen = qctx->split_gsolen;
if(blen > qctx->split_len)
blen = qctx->split_len;
}
result = vquic_send_packets(cf, data, qctx, buf, blen, gsolen, &sent);
if(result) {
if(result == CURLE_AGAIN) {
Curl_bufq_skip(&qctx->sendbuf, sent);
if(qctx->split_len)
qctx->split_len -= sent;
}
return result;
}
Curl_bufq_skip(&qctx->sendbuf, sent);
if(qctx->split_len)
qctx->split_len -= sent;
}
return CURLE_OK;
}
CURLcode vquic_send(struct Curl_cfilter *cf, struct Curl_easy *data,
struct cf_quic_ctx *qctx, size_t gsolen)
{
qctx->gsolen = gsolen;
return vquic_flush(cf, data, qctx);
}
CURLcode vquic_send_tail_split(struct Curl_cfilter *cf, struct Curl_easy *data,
struct cf_quic_ctx *qctx, size_t gsolen,
size_t tail_len, size_t tail_gsolen)
{
DEBUGASSERT(Curl_bufq_len(&qctx->sendbuf) > tail_len);
qctx->split_len = Curl_bufq_len(&qctx->sendbuf) - tail_len;
qctx->split_gsolen = gsolen;
qctx->gsolen = tail_gsolen;
CURL_TRC_CF(data, cf, "vquic_send_tail_split: [%zu gso=%zu][%zu gso=%zu]",
qctx->split_len, qctx->split_gsolen, tail_len, qctx->gsolen);
return vquic_flush(cf, data, qctx);
}
#if defined(HAVE_SENDMMSG) || defined(HAVE_SENDMSG)
static size_t vquic_msghdr_get_udp_gro(struct msghdr *msg)
{
int gso_size = 0;
#if defined(__linux__) && defined(UDP_GRO)
struct cmsghdr *cmsg;
/* Workaround musl CMSG_NXTHDR issue */
#if defined(__clang__) && !defined(__GLIBC__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wsign-compare"
#pragma clang diagnostic ignored "-Wcast-align"
#endif
for(cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
#if defined(__clang__) && !defined(__GLIBC__)
#pragma clang diagnostic pop
#endif
if(cmsg->cmsg_level == SOL_UDP && cmsg->cmsg_type == UDP_GRO) {
memcpy(&gso_size, CMSG_DATA(cmsg), sizeof(gso_size));
break;
}
}
#endif
(void)msg;
return (size_t)gso_size;
}
#endif
#ifdef HAVE_SENDMMSG
static CURLcode recvmmsg_packets(struct Curl_cfilter *cf,
struct Curl_easy *data,
struct cf_quic_ctx *qctx,
size_t max_pkts,
vquic_recv_pkts_cb *recv_cb, void *userp)
{
#if defined(__linux__) && defined(UDP_GRO)
#define MMSG_NUM 16
#define UDP_GRO_CNT_MAX 64
#else
#define MMSG_NUM 64
#define UDP_GRO_CNT_MAX 1
#endif
#define MSG_BUF_SIZE (UDP_GRO_CNT_MAX * 1500)
struct iovec msg_iov[MMSG_NUM];
struct mmsghdr mmsg[MMSG_NUM];
uint8_t msg_ctrl[MMSG_NUM * CMSG_SPACE(sizeof(int))];
struct sockaddr_storage remote_addr[MMSG_NUM];
size_t total_nread = 0, pkts = 0;
#ifdef CURLVERBOSE
size_t calls = 0;
#endif
int mcount, i, n;
char errstr[STRERROR_LEN];
CURLcode result = CURLE_OK;
size_t gso_size;
char *sockbuf = NULL;
uint8_t (*bufs)[MSG_BUF_SIZE] = NULL;
DEBUGASSERT(max_pkts > 0);
result = Curl_multi_xfer_sockbuf_borrow(data, MMSG_NUM * MSG_BUF_SIZE,
&sockbuf);
if(result)
goto out;
bufs = (uint8_t (*)[MSG_BUF_SIZE])sockbuf;
total_nread = 0;
while(pkts < max_pkts) {
n = (int)CURLMIN(CURLMIN(MMSG_NUM, IOV_MAX), max_pkts);
memset(&mmsg, 0, sizeof(mmsg));
for(i = 0; i < n; ++i) {
msg_iov[i].iov_base = bufs[i];
msg_iov[i].iov_len = (int)sizeof(bufs[i]);
mmsg[i].msg_hdr.msg_iov = &msg_iov[i];
mmsg[i].msg_hdr.msg_iovlen = 1;
mmsg[i].msg_hdr.msg_name = &remote_addr[i];
mmsg[i].msg_hdr.msg_namelen = sizeof(remote_addr[i]);
mmsg[i].msg_hdr.msg_control = &msg_ctrl[i * CMSG_SPACE(sizeof(int))];
mmsg[i].msg_hdr.msg_controllen = CMSG_SPACE(sizeof(int));
}
while((mcount = recvmmsg(qctx->sockfd, mmsg, n, 0, NULL)) == -1 &&
(SOCKERRNO == SOCKEINTR || SOCKERRNO == SOCKEMSGSIZE))
;
if(mcount == -1) {
if(SOCKERRNO == EAGAIN || SOCKERRNO == SOCKEWOULDBLOCK) {
CURL_TRC_CF(data, cf, "ingress, recvmmsg -> EAGAIN");
goto out;
}
if(!cf->connected && SOCKERRNO == SOCKECONNREFUSED) {
struct ip_quadruple ip;
if(!Curl_cf_socket_peek(cf->next, data, NULL, NULL, &ip))
failf(data, "QUIC: connection to %s port %u refused",
ip.remote_ip, ip.remote_port);
result = CURLE_COULDNT_CONNECT;
goto out;
}
curlx_strerror(SOCKERRNO, errstr, sizeof(errstr));
failf(data, "QUIC: recvmmsg() unexpectedly returned %d (errno=%d; %s)",
mcount, SOCKERRNO, errstr);
result = CURLE_RECV_ERROR;
goto out;
}
VERBOSE(++calls);
for(i = 0; i < mcount; ++i) {
/* A zero-length UDP packet is no QUIC packet. Ignore. */
if(!mmsg[i].msg_len)
continue;
total_nread += mmsg[i].msg_len;
gso_size = vquic_msghdr_get_udp_gro(&mmsg[i].msg_hdr);
if(gso_size == 0)
gso_size = mmsg[i].msg_len;
result = recv_cb(bufs[i], mmsg[i].msg_len, gso_size,
mmsg[i].msg_hdr.msg_name,
mmsg[i].msg_hdr.msg_namelen, 0, userp);
if(result)
goto out;
pkts += (mmsg[i].msg_len + gso_size - 1) / gso_size;
}
}
out:
if(total_nread || result)
CURL_TRC_CF(data, cf, "vquic_recvmmsg(len=%zu, packets=%zu, calls=%zu)"
" -> %d", total_nread, pkts, calls, result);
Curl_multi_xfer_sockbuf_release(data, sockbuf);
return result;
}
#elif defined(HAVE_SENDMSG)
static CURLcode recvmsg_packets(struct Curl_cfilter *cf,
struct Curl_easy *data,
struct cf_quic_ctx *qctx,
size_t max_pkts,
vquic_recv_pkts_cb *recv_cb, void *userp)
{
struct iovec msg_iov;
struct msghdr msg;
uint8_t buf[64 * 1024];
struct sockaddr_storage remote_addr;
size_t total_nread, pkts, calls;
ssize_t rc;
size_t nread;
char errstr[STRERROR_LEN];
CURLcode result = CURLE_OK;
uint8_t msg_ctrl[CMSG_SPACE(sizeof(int))];
size_t gso_size;
DEBUGASSERT(max_pkts > 0);
for(pkts = 0, total_nread = 0, calls = 0; pkts < max_pkts;) {
/* fully initialise this on each call to `recvmsg()`. There seem to
* operating systems out there that mess with `msg_iov.iov_len`. */
memset(&msg, 0, sizeof(msg));
msg_iov.iov_base = buf;
msg_iov.iov_len = (int)sizeof(buf);
msg.msg_iov = &msg_iov;
msg.msg_iovlen = 1;
msg.msg_control = msg_ctrl;
msg.msg_name = &remote_addr;
msg.msg_namelen = sizeof(remote_addr);
msg.msg_controllen = sizeof(msg_ctrl);
while((rc = recvmsg(qctx->sockfd, &msg, 0)) == -1 &&
(SOCKERRNO == SOCKEINTR || SOCKERRNO == SOCKEMSGSIZE))
;
if(!curlx_sztouz(rc, &nread)) {
if(SOCKERRNO == EAGAIN || SOCKERRNO == SOCKEWOULDBLOCK) {
goto out;
}
if(!cf->connected && SOCKERRNO == SOCKECONNREFUSED) {
struct ip_quadruple ip;
if(!Curl_cf_socket_peek(cf->next, data, NULL, NULL, &ip))
failf(data, "QUIC: connection to %s port %u refused",
ip.remote_ip, ip.remote_port);
result = CURLE_COULDNT_CONNECT;
goto out;
}
curlx_strerror(SOCKERRNO, errstr, sizeof(errstr));
failf(data, "QUIC: recvmsg() unexpectedly returned %zd (errno=%d; %s)",
rc, SOCKERRNO, errstr);
result = CURLE_RECV_ERROR;
goto out;
}
total_nread += nread;
++calls;
/* A 0-length UDP packet is no QUIC packet */
if(!nread)
continue;
gso_size = vquic_msghdr_get_udp_gro(&msg);
if(gso_size == 0)
gso_size = nread;
result = recv_cb(buf, nread, gso_size,
msg.msg_name, msg.msg_namelen, 0, userp);
if(result)
goto out;
pkts += (nread + gso_size - 1) / gso_size;
}
out:
if(total_nread || result)
CURL_TRC_CF(data, cf, "vquic_recvmsg(len=%zu, packets=%zu, calls=%zu)"
" -> %d", total_nread, pkts, calls, result);
return result;
}
#else /* HAVE_SENDMMSG || HAVE_SENDMSG */
static CURLcode recvfrom_packets(struct Curl_cfilter *cf,
struct Curl_easy *data,
struct cf_quic_ctx *qctx,
size_t max_pkts,
vquic_recv_pkts_cb *recv_cb, void *userp)
{
uint8_t buf[64 * 1024];
int bufsize = (int)sizeof(buf);
struct sockaddr_storage remote_addr;
socklen_t remote_addrlen = sizeof(remote_addr);
size_t total_nread, pkts, calls = 0, nread;
ssize_t rv;
char errstr[STRERROR_LEN];
CURLcode result = CURLE_OK;
DEBUGASSERT(max_pkts > 0);
for(pkts = 0, total_nread = 0; pkts < max_pkts;) {
while((rv = recvfrom(qctx->sockfd, (char *)buf, bufsize, 0,
(struct sockaddr *)&remote_addr,
&remote_addrlen)) == -1 &&
(SOCKERRNO == SOCKEINTR || SOCKERRNO == SOCKEMSGSIZE))
;
if(!curlx_sztouz(rv, &nread)) {
if(SOCKERRNO == EAGAIN || SOCKERRNO == SOCKEWOULDBLOCK) {
CURL_TRC_CF(data, cf, "ingress, recvfrom -> EAGAIN");
goto out;
}
if(!cf->connected && SOCKERRNO == SOCKECONNREFUSED) {
struct ip_quadruple ip;
if(!Curl_cf_socket_peek(cf->next, data, NULL, NULL, &ip))
failf(data, "QUIC: connection to %s port %u refused",
ip.remote_ip, ip.remote_port);
result = CURLE_COULDNT_CONNECT;
goto out;
}
curlx_strerror(SOCKERRNO, errstr, sizeof(errstr));
failf(data, "QUIC: recvfrom() unexpectedly returned %zd (errno=%d; %s)",
rv, SOCKERRNO, errstr);
result = CURLE_RECV_ERROR;
goto out;
}
++pkts;
++calls;
/* A 0-length UDP packet is no QUIC packet */
if(!nread)
continue;
total_nread += nread;
result = recv_cb(buf, nread, nread, &remote_addr, remote_addrlen,
0, userp);
if(result)
goto out;
}
out:
if(total_nread || result)
CURL_TRC_CF(data, cf, "vquic_recvfrom(len=%zu, packets=%zu, calls=%zu)"
" -> %d", total_nread, pkts, calls, result);
return result;
}
#endif /* !HAVE_SENDMMSG && !HAVE_SENDMSG */
CURLcode vquic_recv_packets(struct Curl_cfilter *cf,
struct Curl_easy *data,
struct cf_quic_ctx *qctx,
size_t max_pkts,
vquic_recv_pkts_cb *recv_cb, void *userp)
{
CURLcode result;
#ifdef HAVE_SENDMMSG
result = recvmmsg_packets(cf, data, qctx, max_pkts, recv_cb, userp);
#elif defined(HAVE_SENDMSG)
result = recvmsg_packets(cf, data, qctx, max_pkts, recv_cb, userp);
#else
result = recvfrom_packets(cf, data, qctx, max_pkts, recv_cb, userp);
#endif
if(!result) {
if(!qctx->got_first_byte) {
qctx->got_first_byte = TRUE;
qctx->first_byte_at = qctx->last_op;
}
qctx->last_io = qctx->last_op;
}
return result;
}
/*
* If the QLOGDIR environment variable is set, open and return a file
* descriptor to write the log to.
*
* This function returns error if something failed outside of failing to
* create the file. Open file success is deemed by seeing if the returned fd
* is != -1.
*/
CURLcode Curl_qlogdir(struct Curl_easy *data,
unsigned char *scid,
size_t scidlen,
int *qlogfdp)
{
char *qlog_dir = curl_getenv("QLOGDIR");
*qlogfdp = -1;
if(qlog_dir) {
struct dynbuf fname;
CURLcode result;
unsigned int i;
curlx_dyn_init(&fname, DYN_QLOG_NAME);
result = curlx_dyn_add(&fname, qlog_dir);
if(!result)
result = curlx_dyn_add(&fname, "/");
for(i = 0; (i < scidlen) && !result; i++) {
char hex[3];
curl_msnprintf(hex, 3, "%02x", scid[i]);
result = curlx_dyn_add(&fname, hex);
}
if(!result)
result = curlx_dyn_add(&fname, ".sqlog");
if(!result) {
int qlogfd = curlx_open(curlx_dyn_ptr(&fname),
O_WRONLY | O_CREAT | CURL_O_BINARY,
data->set.new_file_perms
#ifdef _WIN32
& (_S_IREAD | _S_IWRITE)
#endif
);
if(qlogfd != -1)
*qlogfdp = qlogfd;
}
curlx_dyn_free(&fname);
curlx_free(qlog_dir);
if(result)
return result;
}
return CURLE_OK;
}
CURLcode Curl_cf_quic_create(struct Curl_cfilter **pcf,
struct Curl_easy *data,
struct connectdata *conn,
const struct Curl_addrinfo *ai,
uint8_t transport)
{
(void)transport;
DEBUGASSERT(transport == TRNSPRT_QUIC);
#if defined(USE_NGTCP2) && defined(USE_NGHTTP3)
return Curl_cf_ngtcp2_create(pcf, data, conn, ai);
#elif defined(USE_QUICHE)
return Curl_cf_quiche_create(pcf, data, conn, ai);
#else
*pcf = NULL;
(void)data;
(void)conn;
(void)ai;
return CURLE_NOT_BUILT_IN;
#endif
}
CURLcode Curl_conn_may_http3(struct Curl_easy *data,
const struct connectdata *conn,
unsigned char transport)
{
if(transport == TRNSPRT_UNIX) {
/* cannot do QUIC over a Unix domain socket */
return CURLE_QUIC_CONNECT_ERROR;
}
if(!(conn->scheme->flags & PROTOPT_SSL)) {
failf(data, "HTTP/3 requested for non-HTTPS URL");
return CURLE_URL_MALFORMAT;
}
#ifndef CURL_DISABLE_PROXY
if(conn->bits.socksproxy) {
failf(data, "HTTP/3 is not supported over a SOCKS proxy");
return CURLE_URL_MALFORMAT;
}
if(conn->bits.httpproxy && conn->bits.tunnel_proxy) {
failf(data, "HTTP/3 is not supported over an HTTP proxy");
return CURLE_URL_MALFORMAT;
}
#endif
return CURLE_OK;
}
#ifdef CURLVERBOSE
const char *vquic_h3_err_str(uint64_t error_code)
{
if(error_code <= UINT_MAX) {
switch((unsigned int)error_code) {
case CURL_H3_ERR_NO_ERROR:
return "NO_ERROR";
case CURL_H3_ERR_GENERAL_PROTOCOL_ERROR:
return "GENERAL_PROTOCOL_ERROR";
case CURL_H3_ERR_INTERNAL_ERROR:
return "INTERNAL_ERROR";
case CURL_H3_ERR_STREAM_CREATION_ERROR:
return "STREAM_CREATION_ERROR";
case CURL_H3_ERR_CLOSED_CRITICAL_STREAM:
return "CLOSED_CRITICAL_STREAM";
case CURL_H3_ERR_FRAME_UNEXPECTED:
return "FRAME_UNEXPECTED";
case CURL_H3_ERR_FRAME_ERROR:
return "FRAME_ERROR";
case CURL_H3_ERR_EXCESSIVE_LOAD:
return "EXCESSIVE_LOAD";
case CURL_H3_ERR_ID_ERROR:
return "ID_ERROR";
case CURL_H3_ERR_SETTINGS_ERROR:
return "SETTINGS_ERROR";
case CURL_H3_ERR_MISSING_SETTINGS:
return "MISSING_SETTINGS";
case CURL_H3_ERR_REQUEST_REJECTED:
return "REQUEST_REJECTED";
case CURL_H3_ERR_REQUEST_CANCELLED:
return "REQUEST_CANCELLED";
case CURL_H3_ERR_REQUEST_INCOMPLETE:
return "REQUEST_INCOMPLETE";
case CURL_H3_ERR_MESSAGE_ERROR:
return "MESSAGE_ERROR";
case CURL_H3_ERR_CONNECT_ERROR:
return "CONNECT_ERROR";
case CURL_H3_ERR_VERSION_FALLBACK:
return "VERSION_FALLBACK";
default:
break;
}
}
/* RFC 9114 ch. 8.1 + 9, reserved future error codes that are NO_ERROR */
if((error_code >= 0x21) && !((error_code - 0x21) % 0x1f))
return "NO_ERROR";
return "unknown";
}
#endif /* CURLVERBOSE */
#if defined(USE_NGTCP2) || defined(USE_NGHTTP3)
static void *vquic_ngtcp2_malloc(size_t size, void *user_data)
{
(void)user_data;
return Curl_cmalloc(size);
}
static void vquic_ngtcp2_free(void *ptr, void *user_data)
{
(void)user_data;
Curl_cfree(ptr);
}
static void *vquic_ngtcp2_calloc(size_t nmemb, size_t size, void *user_data)
{
(void)user_data;
return Curl_ccalloc(nmemb, size);
}
static void *vquic_ngtcp2_realloc(void *ptr, size_t size, void *user_data)
{
(void)user_data;
return Curl_crealloc(ptr, size);
}
#ifdef USE_NGTCP2
static struct ngtcp2_mem vquic_ngtcp2_mem = {
NULL,
vquic_ngtcp2_malloc,
vquic_ngtcp2_free,
vquic_ngtcp2_calloc,
vquic_ngtcp2_realloc
};
struct ngtcp2_mem *Curl_ngtcp2_mem(void)
{
return &vquic_ngtcp2_mem;
}
#endif
#ifdef USE_NGHTTP3
static struct nghttp3_mem vquic_nghttp3_mem = {
NULL,
vquic_ngtcp2_malloc,
vquic_ngtcp2_free,
vquic_ngtcp2_calloc,
vquic_ngtcp2_realloc
};
struct nghttp3_mem *Curl_nghttp3_mem(void)
{
return &vquic_nghttp3_mem;
}
#endif
#endif /* USE_NGTCP2 || USE_NGHTTP3 */
#else /* CURL_DISABLE_HTTP || !USE_HTTP3 */
CURLcode Curl_conn_may_http3(struct Curl_easy *data,
const struct connectdata *conn,
unsigned char transport)
{
(void)data;
(void)conn;
(void)transport;
DEBUGF(infof(data, "QUIC is not supported in this build"));
return CURLE_NOT_BUILT_IN;
}
#endif /* !CURL_DISABLE_HTTP && USE_HTTP3 */