nghttp2/src/app_helper.cc

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/*
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* nghttp2 - HTTP/2.0 C 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 <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 <poll.h>
#include <cassert>
#include <cstdio>
#include <cerrno>
#include <cstdlib>
#include <cstring>
#include <string>
#include <iostream>
#include <string>
#include <set>
#include <iomanip>
#include <fstream>
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#include "app_helper.h"
#include "util.h"
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namespace nghttp2 {
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namespace {
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const char* strstatus(nghttp2_error_code error_code)
{
switch(error_code) {
case NGHTTP2_NO_ERROR:
return "NO_ERROR";
case NGHTTP2_PROTOCOL_ERROR:
return "PROTOCOL_ERROR";
case NGHTTP2_INTERNAL_ERROR:
return "INTERNAL_ERROR";
case NGHTTP2_FLOW_CONTROL_ERROR:
return "FLOW_CONTROL_ERROR";
case NGHTTP2_STREAM_CLOSED:
return "STREAM_CLOSED";
case NGHTTP2_FRAME_TOO_LARGE:
return "FRAME_TOO_LARGE";
case NGHTTP2_REFUSED_STREAM:
return "REFUSED_STREAM";
case NGHTTP2_CANCEL:
return "CANCEL";
default:
return "UNKNOWN";
}
}
} // namespace
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namespace {
const char* strsettingsid(int32_t id)
{
switch(id) {
case NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS:
return "MAX_CONCURRENT_STREAMS";
case NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE:
return "INITIAL_WINDOW_SIZE";
case NGHTTP2_SETTINGS_FLOW_CONTROL_OPTIONS:
return "FLOW_CONTROL_OPTIONS";
default:
return "UNKNOWN";
}
}
} // namespace
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namespace {
const char* strframetype(uint8_t type)
{
switch(type) {
case NGHTTP2_DATA:
return "DATA";
case NGHTTP2_HEADERS:
return "HEADERS";
case NGHTTP2_PRIORITY:
return "PRIORITY";
case NGHTTP2_RST_STREAM:
return "RST_STREAM";
case NGHTTP2_SETTINGS:
return "SETTINGS";
case NGHTTP2_PUSH_PROMISE:
return "PUSH_PROMISE";
case NGHTTP2_PING:
return "PING";
case NGHTTP2_GOAWAY:
return "GOAWAY";
case NGHTTP2_WINDOW_UPDATE:
return "WINDOW_UPDATE";
default:
return "UNKNOWN";
}
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};
} // namespace
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namespace {
void print_frame_attr_indent()
{
printf(" ");
}
} // namespace
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namespace {
bool color_output = false;
} // namespace
void set_color_output(bool f)
{
color_output = f;
}
namespace {
const char* ansi_esc(const char *code)
{
return color_output ? code : "";
}
} // namespace
namespace {
const char* ansi_escend()
{
return color_output ? "\033[0m" : "";
}
} // namespace
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void print_nv(nghttp2_nv *nva, size_t nvlen)
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{
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size_t i;
for(i = 0; i < nvlen; ++i) {
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print_frame_attr_indent();
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printf("%s", ansi_esc("\033[1;34m"));
fwrite(nva[i].name, nva[i].namelen, 1, stdout);
printf("%s: ", ansi_escend());
fwrite(nva[i].value, nva[i].valuelen, 1, stdout);
printf("\n");
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}
}
void print_timer()
{
timeval tv;
get_timer(&tv);
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printf("%s[%3ld.%03ld]%s",
ansi_esc("\033[33m"),
(long int)tv.tv_sec, tv.tv_usec/1000,
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ansi_escend());
}
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namespace {
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void print_frame_hd(const nghttp2_frame_hd& hd)
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{
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printf("<length=%d, flags=0x%02x, stream_id=%d>\n",
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hd.length, hd.flags, hd.stream_id);
}
} // namespace
namespace {
void print_flags(const nghttp2_frame_hd& hd)
{
std::string s;
switch(hd.type) {
case NGHTTP2_DATA:
if(hd.flags & NGHTTP2_FLAG_END_STREAM) {
s += "END_STREAM";
}
break;
case NGHTTP2_HEADERS:
if(hd.flags & NGHTTP2_FLAG_END_STREAM) {
s += "END_STREAM";
}
if(hd.flags & NGHTTP2_FLAG_END_HEADERS) {
if(!s.empty()) {
s += " | ";
}
s += "END_HEADERS";
}
if(hd.flags & NGHTTP2_FLAG_PRIORITY) {
if(!s.empty()) {
s += " | ";
}
s += "PRIORITY";
}
break;
case NGHTTP2_PUSH_PROMISE:
if(hd.flags & NGHTTP2_FLAG_END_PUSH_PROMISE) {
s += "END_PUSH_PROMISE";
}
break;
case NGHTTP2_PING:
if(hd.flags & NGHTTP2_FLAG_PONG) {
s += "PONG";
}
break;
}
printf("; %s\n", s.c_str());
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}
} // namespace
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enum print_type {
PRINT_SEND,
PRINT_RECV
};
namespace {
const char* frame_name_ansi_esc(print_type ptype)
{
return ansi_esc(ptype == PRINT_SEND ? "\033[1;35m" : "\033[1;36m");
}
} // namespace
namespace {
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void print_frame(print_type ptype, nghttp2_frame *frame)
{
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printf("%s%s%s frame ",
frame_name_ansi_esc(ptype),
strframetype(frame->hd.type),
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ansi_escend());
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print_frame_hd(frame->hd);
if(frame->hd.flags) {
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print_frame_attr_indent();
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print_flags(frame->hd);
}
switch(frame->hd.type) {
case NGHTTP2_HEADERS:
if(frame->hd.flags & NGHTTP2_FLAG_PRIORITY) {
print_frame_attr_indent();
printf("(pri=%d)\n", frame->headers.pri);
}
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switch(frame->headers.cat) {
case NGHTTP2_HCAT_REQUEST:
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print_frame_attr_indent();
printf("; Open new stream\n");
break;
case NGHTTP2_HCAT_RESPONSE:
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print_frame_attr_indent();
printf("; First response header\n");
break;
case NGHTTP2_HCAT_PUSH_RESPONSE:
print_frame_attr_indent();
printf("; First push response header\n");
break;
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default:
break;
}
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print_nv(frame->headers.nva, frame->headers.nvlen);
break;
case NGHTTP2_PRIORITY:
print_frame_attr_indent();
printf("(pri=%d)\n", frame->priority.pri);
break;
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case NGHTTP2_RST_STREAM:
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print_frame_attr_indent();
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printf("(error_code=%s(%u))\n",
strstatus(frame->rst_stream.error_code),
frame->rst_stream.error_code);
break;
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case NGHTTP2_SETTINGS:
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print_frame_attr_indent();
printf("(niv=%lu)\n", static_cast<unsigned long>(frame->settings.niv));
for(size_t i = 0; i < frame->settings.niv; ++i) {
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print_frame_attr_indent();
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printf("[%s(%d):%u]\n",
strsettingsid(frame->settings.iv[i].settings_id),
frame->settings.iv[i].settings_id,
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frame->settings.iv[i].value);
}
break;
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case NGHTTP2_PUSH_PROMISE:
print_frame_attr_indent();
printf("(promised_stream_id=%d)\n",
frame->push_promise.promised_stream_id);
break;
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case NGHTTP2_PING:
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print_frame_attr_indent();
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printf("(opaque_data=%s)\n",
util::format_hex(frame->ping.opaque_data, 8).c_str());
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break;
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case NGHTTP2_GOAWAY:
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print_frame_attr_indent();
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printf("(last_stream_id=%d, error_code=%s(%u), opaque_data(%u)=[%s])\n",
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frame->goaway.last_stream_id,
strstatus(frame->goaway.error_code),
frame->goaway.error_code,
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static_cast<unsigned int>(frame->goaway.opaque_data_len),
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util::format_hex(frame->goaway.opaque_data,
frame->goaway.opaque_data_len).c_str());
break;
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case NGHTTP2_WINDOW_UPDATE:
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print_frame_attr_indent();
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printf("(window_size_increment=%d)\n",
frame->window_update.window_size_increment);
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break;
default:
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printf("\n");
break;
}
}
} // namespace
int on_frame_recv_callback
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(nghttp2_session *session, nghttp2_frame *frame, void *user_data)
{
print_timer();
printf(" recv ");
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print_frame(PRINT_RECV, frame);
fflush(stdout);
return 0;
}
int on_invalid_frame_recv_callback
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(nghttp2_session *session, nghttp2_frame *frame,
nghttp2_error_code error_code, void *user_data)
{
print_timer();
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printf(" [INVALID; status=%s] recv ", strstatus(error_code));
print_frame(PRINT_RECV, frame);
fflush(stdout);
return 0;
}
namespace {
void dump_header(const uint8_t *head, size_t headlen)
{
size_t i;
print_frame_attr_indent();
printf("Header dump: ");
for(i = 0; i < headlen; ++i) {
printf("%02X ", head[i]);
}
printf("\n");
}
} // namespace
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void on_frame_recv_parse_error_callback(nghttp2_session *session,
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nghttp2_frame_type type,
const uint8_t *head,
size_t headlen,
const uint8_t *payload,
size_t payloadlen,
int error_code, void *user_data)
{
print_timer();
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printf(" [PARSE_ERROR] recv %s%s%s frame\n",
frame_name_ansi_esc(PRINT_RECV),
strframetype(type),
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ansi_escend());
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print_frame_attr_indent();
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printf("Error: %s\n", nghttp2_strerror(error_code));
dump_header(head, headlen);
fflush(stdout);
}
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void on_unknown_frame_recv_callback(nghttp2_session *session,
const uint8_t *head,
size_t headlen,
const uint8_t *payload,
size_t payloadlen,
void *user_data)
{
print_timer();
printf(" recv unknown frame\n");
dump_header(head, headlen);
fflush(stdout);
}
int on_frame_send_callback
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(nghttp2_session *session, nghttp2_frame *frame, void *user_data)
{
print_timer();
printf(" send ");
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print_frame(PRINT_SEND, frame);
fflush(stdout);
return 0;
}
namespace {
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void print_data_frame(print_type ptype, uint16_t length, uint8_t flags,
int32_t stream_id)
{
printf("%sDATA%s frame ",
frame_name_ansi_esc(ptype), ansi_escend());
nghttp2_frame_hd hd = {length, NGHTTP2_DATA, flags, stream_id};
print_frame_hd(hd);
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if(flags) {
print_frame_attr_indent();
print_flags(hd);
}
}
} // namespace
int on_data_recv_callback
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(nghttp2_session *session, uint16_t length, uint8_t flags, int32_t stream_id,
void *user_data)
{
print_timer();
printf(" recv ");
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print_data_frame(PRINT_RECV, length, flags, stream_id);
fflush(stdout);
return 0;
}
int on_data_send_callback
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(nghttp2_session *session, uint16_t length, uint8_t flags, int32_t stream_id,
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void *user_data)
{
print_timer();
printf(" send ");
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print_data_frame(PRINT_SEND, length, flags, stream_id);
fflush(stdout);
return 0;
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}
int64_t time_delta(const timeval& a, const timeval& b)
{
int64_t res = (a.tv_sec - b.tv_sec) * 1000;
res += (a.tv_usec - b.tv_usec) / 1000;
return res;
}
namespace {
timeval base_tv;
} // namespace
void reset_timer()
{
get_time(&base_tv);
}
void get_timer(timeval* tv)
{
get_time(tv);
tv->tv_usec -= base_tv.tv_usec;
tv->tv_sec -= base_tv.tv_sec;
if(tv->tv_usec < 0) {
tv->tv_usec += 1000000;
--tv->tv_sec;
}
}
int get_time(timeval *tv)
{
int rv;
#ifdef HAVE_CLOCK_GETTIME
timespec ts;
rv = clock_gettime(CLOCK_MONOTONIC, &ts);
tv->tv_sec = ts.tv_sec;
tv->tv_usec = ts.tv_nsec/1000;
#else // !HAVE_CLOCK_GETTIME
rv = gettimeofday(tv, 0);
#endif // !HAVE_CLOCK_GETTIME
return rv;
}
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} // namespace nghttp2