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nghttp2/examples/spdycat.cc

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/*
* Spdylay - SPDY Library
*
* Copyright (c) 2012 Tatsuhiro Tsujikawa
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <config.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <unistd.h>
#include <fcntl.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <signal.h>
#include <getopt.h>
#include <poll.h>
#include <cassert>
#include <cstdio>
#include <cerrno>
#include <cstdlib>
#include <cstring>
#include <string>
#include <iostream>
#include <string>
#include <set>
#include <iomanip>
#include <fstream>
#include <map>
#include <vector>
#include <sstream>
#include <openssl/ssl.h>
#include <openssl/err.h>
#include <spdylay/spdylay.h>
#include "spdylay_ssl.h"
#include "uri.h"
#include "HtmlParser.h"
#include "util.h"
namespace spdylay {
struct Config {
bool null_out;
bool remote_name;
bool verbose;
bool get_assets;
bool stat;
int spdy_version;
int timeout;
std::string certfile;
std::string keyfile;
int window_bits;
Config():null_out(false), remote_name(false), verbose(false),
get_assets(false), stat(false),
spdy_version(-1), timeout(-1), window_bits(-1)
{}
};
struct RequestStat {
timeval on_syn_stream_time;
timeval on_syn_reply_time;
timeval on_complete_time;
RequestStat()
{
on_syn_stream_time.tv_sec = -1;
on_syn_stream_time.tv_usec = -1;
on_syn_reply_time.tv_sec = -1;
on_syn_reply_time.tv_usec = -1;
on_complete_time.tv_sec = -1;
on_complete_time.tv_usec = -1;
}
};
void record_time(timeval *tv)
{
gettimeofday(tv, 0);
}
struct Request {
uri::UriStruct us;
spdylay_gzip *inflater;
HtmlParser *html_parser;
// Recursion level: 0: first entity, 1: entity linked from first entity
int level;
RequestStat stat;
std::string status;
Request(const uri::UriStruct& us, int level = 0)
: us(us), inflater(0), html_parser(0), level(level)
{}
~Request()
{
spdylay_gzip_inflate_del(inflater);
delete html_parser;
}
void init_inflater()
{
int rv;
rv = spdylay_gzip_inflate_new(&inflater);
assert(rv == 0);
}
void init_html_parser()
{
html_parser = new HtmlParser(uri::construct(us));
}
int update_html_parser(const uint8_t *data, size_t len, int fin)
{
if(!html_parser) {
return 0;
}
int rv;
rv = html_parser->parse_chunk(reinterpret_cast<const char*>(data), len,
fin);
return rv;
}
void record_syn_stream_time()
{
record_time(&stat.on_syn_stream_time);
}
void record_syn_reply_time()
{
record_time(&stat.on_syn_reply_time);
}
void record_complete_time()
{
record_time(&stat.on_complete_time);
}
};
struct SessionStat {
timeval on_handshake_time;
SessionStat()
{
on_handshake_time.tv_sec = -1;
on_handshake_time.tv_usec = -1;
}
};
struct SpdySession {
std::vector<Request*> reqvec;
// Map from stream ID to Request object.
std::map<int32_t, Request*> streams;
// Insert path already added in reqvec to prevent multiple request
// for 1 resource.
std::set<std::string> path_cache;
// The number of completed requests, including failed ones.
size_t complete;
std::string hostport;
Spdylay *sc;
SessionStat stat;
SpdySession():complete(0) {}
~SpdySession()
{
for(size_t i = 0; i < reqvec.size(); ++i) {
delete reqvec[i];
}
}
bool all_requests_processed() const
{
return complete == reqvec.size();
}
void update_hostport()
{
if(reqvec.empty()) {
return;
}
std::stringstream ss;
if(reqvec[0]->us.ipv6LiteralAddress) {
ss << "[" << reqvec[0]->us.host << "]";
} else {
ss << reqvec[0]->us.host;
}
if(reqvec[0]->us.port != 443) {
ss << ":" << reqvec[0]->us.port;
}
hostport = ss.str();
}
bool add_request(const uri::UriStruct& us, int level = 0)
{
std::string key = us.dir+us.file+us.query;
if(path_cache.count(key)) {
return false;
} else {
path_cache.insert(key);
reqvec.push_back(new Request(us, level));
return true;
}
}
void record_handshake_time()
{
record_time(&stat.on_handshake_time);
}
};
Config config;
extern bool ssl_debug;
void submit_request(Spdylay& sc, const std::string& hostport, Request* req)
{
uri::UriStruct& us = req->us;
std::string path = us.dir+us.file+us.query;
int r = sc.submit_request(hostport, path, 3, req);
assert(r == 0);
}
void update_html_parser(SpdySession *spdySession, Request *req,
const uint8_t *data, size_t len, int fin)
{
if(!req->html_parser) {
return;
}
req->update_html_parser(data, len, fin);
for(size_t i = 0; i < req->html_parser->get_links().size(); ++i) {
const std::string& uri = req->html_parser->get_links()[i];
uri::UriStruct us;
if(uri::parse(us, uri) &&
req->us.protocol == us.protocol && req->us.host == us.host &&
req->us.port == us.port) {
spdySession->add_request(us, req->level+1);
submit_request(*spdySession->sc, spdySession->hostport,
spdySession->reqvec.back());
}
}
req->html_parser->clear_links();
}
SpdySession* get_session(void *user_data)
{
return reinterpret_cast<SpdySession*>
(reinterpret_cast<Spdylay*>(user_data)->user_data());
}
void on_data_chunk_recv_callback
(spdylay_session *session, uint8_t flags, int32_t stream_id,
const uint8_t *data, size_t len, void *user_data)
{
SpdySession *spdySession = get_session(user_data);
std::map<int32_t, Request*>::iterator itr =
spdySession->streams.find(stream_id);
if(itr != spdySession->streams.end()) {
Request *req = (*itr).second;
if(req->inflater) {
while(len > 0) {
const size_t MAX_OUTLEN = 4096;
uint8_t out[MAX_OUTLEN];
size_t outlen = MAX_OUTLEN;
size_t tlen = len;
int rv = spdylay_gzip_inflate(req->inflater, out, &outlen, data, &tlen);
if(rv == -1) {
spdylay_submit_rst_stream(session, stream_id, SPDYLAY_INTERNAL_ERROR);
break;
}
if(!config.null_out) {
std::cout.write(reinterpret_cast<const char*>(out), outlen);
}
update_html_parser(spdySession, req, out, outlen, 0);
data += tlen;
len -= tlen;
}
} else {
if(!config.null_out) {
std::cout.write(reinterpret_cast<const char*>(data), len);
}
update_html_parser(spdySession, req, data, len, 0);
}
}
}
void check_stream_id(spdylay_session *session,
spdylay_frame_type type, spdylay_frame *frame,
void *user_data)
{
SpdySession *spdySession = get_session(user_data);
int32_t stream_id = frame->syn_stream.stream_id;
Request *req = (Request*)spdylay_session_get_stream_user_data(session,
stream_id);
spdySession->streams[stream_id] = req;
req->record_syn_stream_time();
}
void on_ctrl_send_callback2
(spdylay_session *session, spdylay_frame_type type, spdylay_frame *frame,
void *user_data)
{
if(type == SPDYLAY_SYN_STREAM) {
check_stream_id(session, type, frame, user_data);
}
if(config.verbose) {
on_ctrl_send_callback(session, type, frame, user_data);
}
}
void check_response_header
(spdylay_session *session, spdylay_frame_type type, spdylay_frame *frame,
void *user_data)
{
char **nv;
int32_t stream_id;
if(type == SPDYLAY_SYN_REPLY) {
nv = frame->syn_reply.nv;
stream_id = frame->syn_reply.stream_id;
} else if(type == SPDYLAY_HEADERS) {
nv = frame->headers.nv;
stream_id = frame->headers.stream_id;
} else {
return;
}
Request *req = (Request*)spdylay_session_get_stream_user_data(session,
stream_id);
assert(req);
bool gzip = false;
for(size_t i = 0; nv[i]; i += 2) {
if(strcmp("content-encoding", nv[i]) == 0) {
gzip = util::strieq("gzip", nv[i+1]) || util::strieq("deflate", nv[i+1]);
} else if(strcmp(":status", nv[i]) == 0) {
req->status = nv[i+1];
}
}
if(gzip) {
if(!req->inflater) {
req->init_inflater();
}
}
if(config.get_assets && req->level == 0) {
if(!req->html_parser) {
req->init_html_parser();
}
}
}
void on_ctrl_recv_callback2
(spdylay_session *session, spdylay_frame_type type, spdylay_frame *frame,
void *user_data)
{
if(type == SPDYLAY_SYN_REPLY) {
Request *req = (Request*)spdylay_session_get_stream_user_data
(session, frame->syn_reply.stream_id);
assert(req);
req->record_syn_reply_time();
}
check_response_header(session, type, frame, user_data);
if(config.verbose) {
on_ctrl_recv_callback(session, type, frame, user_data);
}
}
void on_stream_close_callback
(spdylay_session *session, int32_t stream_id, spdylay_status_code status_code,
void *user_data)
{
SpdySession *spdySession = get_session(user_data);
std::map<int32_t, Request*>::iterator itr =
spdySession->streams.find(stream_id);
if(itr != spdySession->streams.end()) {
update_html_parser(spdySession, (*itr).second, 0, 0, 1);
(*itr).second->record_complete_time();
++spdySession->complete;
if(spdySession->all_requests_processed()) {
spdylay_submit_goaway(session, SPDYLAY_GOAWAY_OK);
}
}
}
int64_t time_delta(const timeval& a, const timeval& b)
{
int64_t res;
res = a.tv_usec - b.tv_usec;
int off = 0;
if(res < 0) {
res += 1000000;
off = -1;
}
res += (a.tv_sec + off - b.tv_sec)*1000000;
return res/1000;
}
void print_stats(const SpdySession& spdySession)
{
std::cout << "***** Statistics *****" << std::endl;
for(size_t i = 0; i < spdySession.reqvec.size(); ++i) {
const Request *req = spdySession.reqvec[i];
std::cout << "#" << i+1 << ": " << uri::construct(req->us) << std::endl;
std::cout << " Status: " << req->status << std::endl;
std::cout << " Delta (ms) from SSL/TLS handshake(SYN_STREAM):"
<< std::endl;
if(req->stat.on_syn_reply_time.tv_sec >= 0) {
std::cout << " SYN_REPLY: "
<< time_delta(req->stat.on_syn_reply_time,
spdySession.stat.on_handshake_time)
<< "("
<< time_delta(req->stat.on_syn_reply_time,
req->stat.on_syn_stream_time)
<< ")"
<< std::endl;
}
if(req->stat.on_complete_time.tv_sec >= 0) {
std::cout << " Completed: "
<< time_delta(req->stat.on_complete_time,
spdySession.stat.on_handshake_time)
<< "("
<< time_delta(req->stat.on_complete_time,
req->stat.on_syn_stream_time)
<< ")"
<< std::endl;
}
std::cout << std::endl;
}
}
int communicate(const std::string& host, uint16_t port,
SpdySession& spdySession,
const spdylay_session_callbacks *callbacks)
{
int fd = connect_to(host, port);
if(fd == -1) {
std::cerr << "Could not connect to the host" << std::endl;
return -1;
}
SSL_CTX *ssl_ctx;
ssl_ctx = SSL_CTX_new(SSLv23_client_method());
if(!ssl_ctx) {
std::cerr << ERR_error_string(ERR_get_error(), 0) << std::endl;
return -1;
}
std::string next_proto;
switch(config.spdy_version) {
case SPDYLAY_PROTO_SPDY2:
next_proto = "spdy/2";
break;
case SPDYLAY_PROTO_SPDY3:
next_proto = "spdy/3";
break;
}
setup_ssl_ctx(ssl_ctx, &next_proto);
if(!config.keyfile.empty()) {
if(SSL_CTX_use_PrivateKey_file(ssl_ctx, config.keyfile.c_str(),
SSL_FILETYPE_PEM) != 1) {
std::cerr << ERR_error_string(ERR_get_error(), 0) << std::endl;
return -1;
}
}
if(!config.certfile.empty()) {
if(SSL_CTX_use_certificate_chain_file(ssl_ctx,
config.certfile.c_str()) != 1) {
std::cerr << ERR_error_string(ERR_get_error(), 0) << std::endl;
return -1;
}
}
SSL *ssl = SSL_new(ssl_ctx);
if(!ssl) {
std::cerr << ERR_error_string(ERR_get_error(), 0) << std::endl;
return -1;
}
if(ssl_handshake(ssl, fd) == -1) {
return -1;
}
spdySession.record_handshake_time();
make_non_block(fd);
set_tcp_nodelay(fd);
int spdy_version = spdylay_npn_get_version(
reinterpret_cast<const unsigned char*>(next_proto.c_str()),
next_proto.size());
if (spdy_version <= 0) {
return -1;
}
Spdylay sc(fd, ssl, spdy_version, callbacks, &spdySession);
spdySession.sc = &sc;
nfds_t npollfds = 1;
pollfd pollfds[1];
if(spdy_version >= SPDYLAY_PROTO_SPDY3 && config.window_bits != -1) {
spdylay_settings_entry iv[1];
iv[0].settings_id = SPDYLAY_SETTINGS_INITIAL_WINDOW_SIZE;
iv[0].flags = SPDYLAY_ID_FLAG_SETTINGS_NONE;
iv[0].value = 1 << config.window_bits;
int rv = sc.submit_settings(SPDYLAY_FLAG_SETTINGS_NONE, iv, 1);
assert(rv == 0);
}
for(int i = 0, n = spdySession.reqvec.size(); i < n; ++i) {
submit_request(sc, spdySession.hostport, spdySession.reqvec[i]);
}
pollfds[0].fd = fd;
ctl_poll(pollfds, &sc);
int end_time = time(NULL) + config.timeout;
int timeout = config.timeout;
bool ok = true;
while(!sc.finish()) {
int nfds = poll(pollfds, npollfds, timeout);
if(nfds == -1) {
perror("poll");
return -1;
}
if(pollfds[0].revents & (POLLIN | POLLOUT)) {
int rv;
if((rv = sc.recv()) != 0 || (rv = sc.send()) != 0) {
if(rv != SPDYLAY_ERR_EOF || !spdySession.all_requests_processed()) {
std::cout << "Fatal: " << spdylay_strerror(rv) << std::endl;
std::cout << "reqnum=" << spdySession.reqvec.size()
<< ", completed=" << spdySession.complete << std::endl;
}
ok = false;
break;
}
}
if((pollfds[0].revents & POLLHUP) || (pollfds[0].revents & POLLERR)) {
std::cout << "HUP" << std::endl;
ok = false;
break;
}
timeout = timeout == -1 ? timeout : end_time - time(NULL);
if (config.timeout != -1 && timeout <= 0) {
std::cout << "Requests to " << spdySession.hostport << "timed out.";
ok = false;
break;
}
assert(ok);
ctl_poll(pollfds, &sc);
}
if(!spdySession.all_requests_processed()) {
std::cout << "Some requests were not processed. total="
<< spdySession.reqvec.size()
<< ", processed=" << spdySession.complete << std::endl;
}
SSL_shutdown(ssl);
SSL_free(ssl);
SSL_CTX_free(ssl_ctx);
shutdown(fd, SHUT_WR);
close(fd);
if(config.stat) {
print_stats(spdySession);
}
return ok ? 0 : -1;
}
int run(char **uris, int n)
{
spdylay_session_callbacks callbacks;
memset(&callbacks, 0, sizeof(spdylay_session_callbacks));
callbacks.send_callback = send_callback;
callbacks.recv_callback = recv_callback;
callbacks.on_stream_close_callback = on_stream_close_callback;
callbacks.on_ctrl_recv_callback = on_ctrl_recv_callback2;
callbacks.on_ctrl_send_callback = on_ctrl_send_callback2;
if(config.verbose) {
callbacks.on_data_recv_callback = on_data_recv_callback;
callbacks.on_invalid_ctrl_recv_callback = on_invalid_ctrl_recv_callback;
callbacks.on_ctrl_recv_parse_error_callback =
on_ctrl_recv_parse_error_callback;
callbacks.on_unknown_ctrl_recv_callback = on_unknown_ctrl_recv_callback;
}
callbacks.on_data_chunk_recv_callback = on_data_chunk_recv_callback;
ssl_debug = config.verbose;
std::string prev_host;
uint16_t prev_port = 0;
int failures = 0;
SpdySession spdySession;
for(int i = 0; i < n; ++i) {
uri::UriStruct us;
if(uri::parse(us, uris[i])) {
if(prev_host != us.host || prev_port != us.port) {
if(!spdySession.reqvec.empty()) {
spdySession.update_hostport();
if (communicate(prev_host, prev_port, spdySession, &callbacks) != 0) {
++failures;
}
spdySession = SpdySession();
}
prev_host = us.host;
prev_port = us.port;
}
spdySession.add_request(us);
}
}
if(!spdySession.reqvec.empty()) {
spdySession.update_hostport();
if (communicate(prev_host, prev_port, spdySession, &callbacks) != 0) {
++failures;
}
}
return failures;
}
void print_usage(std::ostream& out)
{
out << "Usage: spdycat [-Oansv23] [-t <SECONDS>] [-w <WINDOW_BITS>] [--cert=<CERT>]\n"
<< " [--key=<KEY>] <URI>..."
<< std::endl;
}
void print_help(std::ostream& out)
{
print_usage(out);
out << "\n"
<< "OPTIONS:\n"
<< " -v, --verbose Print debug information such as reception/\n"
<< " transmission of frames and name/value pairs.\n"
<< " -n, --null-out Discard downloaded data.\n"
<< " -O, --remote-name Save download data in the current directory.\n"
<< " The filename is dereived from URI. If URI\n"
<< " ends with '/', 'index.html' is used as a\n"
<< " filename. Not implemented yet.\n"
<< " -2, --spdy2 Only use SPDY/2.\n"
<< " -3, --spdy3 Only use SPDY/3.\n"
<< " -t, --timeout=<N> Timeout each request after <N> seconds.\n"
<< " -w, --window-bits=<N>\n"
<< " Sets the initial window size to 2**<N>.\n"
<< " -a, --get-assets Download assets such as stylesheets, images\n"
<< " and script files linked from the downloaded\n"
<< " resource. Only links whose origins are the\n"
<< " same with the linking resource will be\n"
<< " downloaded.\n"
<< " -s, --stat Print statistics.\n"
<< " --cert=<CERT> Use the specified client certificate file.\n"
<< " The file must be in PEM format.\n"
<< " --key=<KEY> Use the client private key file. The file\n"
<< " must be in PEM format.\n"
<< std::endl;
}
int main(int argc, char **argv)
{
while(1) {
int flag;
static option long_options[] = {
{"verbose", no_argument, 0, 'v' },
{"null-out", no_argument, 0, 'n' },
{"remote-name", no_argument, 0, 'O' },
{"spdy2", no_argument, 0, '2' },
{"spdy3", no_argument, 0, '3' },
{"timeout", required_argument, 0, 't' },
{"window-bits", required_argument, 0, 'w' },
{"get-assets", no_argument, 0, 'a' },
{"stat", no_argument, 0, 's' },
{"cert", required_argument, &flag, 1 },
{"key", required_argument, &flag, 2 },
{"help", no_argument, 0, 'h' },
{0, 0, 0, 0 }
};
int option_index = 0;
int c = getopt_long(argc, argv, "Oanhv23st:w:", long_options,
&option_index);
if(c == -1) {
break;
}
switch(c) {
case 'O':
config.remote_name = true;
break;
case 'h':
print_help(std::cout);
exit(EXIT_SUCCESS);
case 'n':
config.null_out = true;
break;
case 'v':
config.verbose = true;
break;
case '2':
config.spdy_version = SPDYLAY_PROTO_SPDY2;
break;
case '3':
config.spdy_version = SPDYLAY_PROTO_SPDY3;
break;
case 't':
config.timeout = atoi(optarg);
break;
case 'w': {
errno = 0;
unsigned long int n = strtoul(optarg, 0, 10);
if(errno == 0 && n < 31) {
config.window_bits = n;
} else {
std::cerr << "-w: specify the integer in the range [0, 30], inclusive"
<< std::endl;
exit(EXIT_FAILURE);
}
break;
}
case 'a':
#ifdef HAVE_LIBXML2
config.get_assets = true;
#else // !HAVE_LIBXML2
std::cerr << "Warning: -a, --get-assets option cannot be used because\n"
<< "the binary was not compiled with libxml2."
<< std::endl;
#endif // !HAVE_LIBXML2
break;
case 's':
config.stat = true;
break;
case '?':
exit(EXIT_FAILURE);
case 0:
switch(flag) {
case 1:
// cert option
config.certfile = optarg;
break;
case 2:
// key option
config.keyfile = optarg;
break;
}
break;
default:
break;
}
}
struct sigaction act;
memset(&act, 0, sizeof(struct sigaction));
act.sa_handler = SIG_IGN;
sigaction(SIGPIPE, &act, 0);
SSL_load_error_strings();
SSL_library_init();
reset_timer();
return run(argv+optind, argc-optind);
}
} // namespace spdylay
int main(int argc, char **argv)
{
return spdylay::main(argc, argv);
}
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