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/*
* Copyright 2023 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include "ossl-nghttp3.h"
#include <openssl/err.h>
static int done;
static void make_nv(nghttp3_nv *nv, const char *name, const char *value)
{
nv->name = (uint8_t *)name;
nv->value = (uint8_t *)value;
nv->namelen = strlen(name);
nv->valuelen = strlen(value);
nv->flags = NGHTTP3_NV_FLAG_NONE;
}
static int on_recv_header(nghttp3_conn *h3conn, int64_t stream_id,
int32_t token,
nghttp3_rcbuf *name, nghttp3_rcbuf *value,
uint8_t flags,
void *conn_user_data,
void *stream_user_data)
{
nghttp3_vec vname, vvalue;
/* Received a single HTTP header. */
vname = nghttp3_rcbuf_get_buf(name);
vvalue = nghttp3_rcbuf_get_buf(value);
fwrite(vname.base, vname.len, 1, stderr);
fprintf(stderr, ": ");
fwrite(vvalue.base, vvalue.len, 1, stderr);
fprintf(stderr, "\n");
return 0;
}
static int on_end_headers(nghttp3_conn *h3conn, int64_t stream_id,
int fin,
void *conn_user_data, void *stream_user_data)
{
fprintf(stderr, "\n");
return 0;
}
static int on_recv_data(nghttp3_conn *h3conn, int64_t stream_id,
const uint8_t *data, size_t datalen,
void *conn_user_data, void *stream_user_data)
{
ssize_t wr;
/* HTTP response body data - write it to stdout. */
while (datalen > 0) {
wr = fwrite(data, 1, datalen, stdout);
if (wr < 0)
return 1;
data += wr;
datalen -= wr;
}
return 0;
}
static int on_end_stream(nghttp3_conn *h3conn, int64_t stream_id,
void *conn_user_data, void *stream_user_data)
{
/* HTTP transaction is done - set done flag so that we stop looping. */
done = 1;
return 0;
}
int main(int argc, char **argv)
{
int ret = 1;
SSL_CTX *ctx = NULL;
H3_CONN *conn = NULL;
nghttp3_nv nva[16];
nghttp3_callbacks callbacks = {0};
size_t num_nv = 0;
const char *addr;
/* Check arguments. */
if (argc < 2) {
fprintf(stderr, "usage: %s <host:port>\n", argv[0]);
goto err;
}
addr = argv[1];
/* Setup SSL_CTX. */
if ((ctx = SSL_CTX_new(OSSL_QUIC_client_method())) == NULL)
goto err;
SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
if (SSL_CTX_set_default_verify_paths(ctx) == 0)
goto err;
/* Setup callbacks. */
callbacks.recv_header = on_recv_header;
callbacks.end_headers = on_end_headers;
callbacks.recv_data = on_recv_data;
callbacks.end_stream = on_end_stream;
/* Create connection. */
if ((conn = H3_CONN_new_for_addr(ctx, addr, &callbacks,
NULL, NULL)) == NULL) {
ERR_raise_data(ERR_LIB_USER, ERR_R_OPERATION_FAIL,
"cannot create HTTP/3 connection");
goto err;
}
/* Build HTTP headers. */
make_nv(&nva[num_nv++], ":method", "GET");
make_nv(&nva[num_nv++], ":scheme", "https");
make_nv(&nva[num_nv++], ":authority", addr);
make_nv(&nva[num_nv++], ":path", "/");
make_nv(&nva[num_nv++], "user-agent", "OpenSSL-Demo/nghttp3");
/* Submit request. */
if (!H3_CONN_submit_request(conn, nva, num_nv, NULL, NULL)) {
ERR_raise_data(ERR_LIB_USER, ERR_R_OPERATION_FAIL,
"cannot submit HTTP/3 request");
goto err;
}
/* Wait for request to complete. */
while (!done)
if (!H3_CONN_handle_events(conn)) {
ERR_raise_data(ERR_LIB_USER, ERR_R_OPERATION_FAIL,
"cannot handle events");
goto err;
}
ret = 0;
err:
if (ret != 0)
ERR_print_errors_fp(stderr);
H3_CONN_free(conn);
SSL_CTX_free(ctx);
return ret;
}
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