#include <assert.h>
#include <errno.h>
+#include <netinet/in.h>
#include <pthread.h>
+#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
#include <sys/epoll.h>
#include <sys/sendfile.h>
#include <sys/socket.h>
#include <utility>
#include <vector>
+#include "accesslog.h"
+#include "log.h"
#include "markpool.h"
+#include "metacube.h"
#include "mutexlock.h"
#include "parse.h"
#include "server.h"
using namespace std;
+extern AccessLogThread *access_log;
+
Server::Server()
{
pthread_mutex_init(&mutex, NULL);
epoll_fd = epoll_create(1024); // Size argument is ignored.
if (epoll_fd == -1) {
- perror("epoll_fd");
+ log_perror("epoll_fd");
exit(1);
}
}
Server::~Server()
{
+ for (map<string, Stream *>::iterator stream_it = streams.begin();
+ stream_it != streams.end();
+ ++stream_it) {
+ delete stream_it->second;
+ }
+
int ret;
do {
ret = close(epoll_fd);
} while (ret == -1 && errno == EINTR);
if (ret == -1) {
- perror("close(epoll_fd)");
+ log_perror("close(epoll_fd)");
}
}
continue;
}
if (nfds == -1) {
- perror("epoll_wait");
+ log_perror("epoll_wait");
exit(1);
}
process_queued_data();
for (int i = 0; i < nfds; ++i) {
- int fd = events[i].data.fd;
- assert(clients.count(fd) != 0);
- Client *client = &clients[fd];
+ Client *client = reinterpret_cast<Client *>(events[i].data.u64);
if (events[i].events & (EPOLLERR | EPOLLRDHUP | EPOLLHUP)) {
close_client(client);
void Server::add_client(int sock)
{
- clients.insert(make_pair(sock, Client(sock)));
+ pair<map<int, Client>::iterator, bool> ret =
+ clients.insert(make_pair(sock, Client(sock)));
+ assert(ret.second == true); // Should not already exist.
+ Client *client_ptr = &ret.first->second;
// Start listening on data from this socket.
epoll_event ev;
ev.events = EPOLLIN | EPOLLET | EPOLLRDHUP;
- ev.data.u64 = 0; // Keep Valgrind happy.
- ev.data.fd = sock;
+ ev.data.u64 = reinterpret_cast<uint64_t>(client_ptr);
if (epoll_ctl(epoll_fd, EPOLL_CTL_ADD, sock, &ev) == -1) {
- perror("epoll_ctl(EPOLL_CTL_ADD)");
+ log_perror("epoll_ctl(EPOLL_CTL_ADD)");
exit(1);
}
- process_client(&clients[sock]);
+ process_client(client_ptr);
}
void Server::add_client_from_serialized(const ClientProto &client)
} else {
stream = stream_it->second;
}
- clients.insert(make_pair(client.sock(), Client(client, stream)));
- Client *client_ptr = &clients[client.sock()];
+ pair<map<int, Client>::iterator, bool> ret =
+ clients.insert(make_pair(client.sock(), Client(client, stream)));
+ assert(ret.second == true); // Should not already exist.
+ Client *client_ptr = &ret.first->second;
// Start listening on data from this socket.
epoll_event ev;
ev.events = EPOLLOUT | EPOLLET | EPOLLRDHUP;
}
ev.data.u64 = 0; // Keep Valgrind happy.
- ev.data.fd = client.sock();
+ ev.data.u64 = reinterpret_cast<uint64_t>(client_ptr);
if (epoll_ctl(epoll_fd, EPOLL_CTL_ADD, client.sock(), &ev) == -1) {
- perror("epoll_ctl(EPOLL_CTL_ADD)");
+ log_perror("epoll_ctl(EPOLL_CTL_ADD)");
exit(1);
}
}
}
-void Server::add_stream(const string &stream_id, size_t backlog_size)
+void Server::add_stream(const string &stream_id, size_t backlog_size, Stream::Encoding encoding)
{
MutexLock lock(&mutex);
- streams.insert(make_pair(stream_id, new Stream(stream_id, backlog_size)));
+ streams.insert(make_pair(stream_id, new Stream(stream_id, backlog_size, encoding)));
}
-void Server::add_stream_from_serialized(const StreamProto &stream)
+void Server::add_stream_from_serialized(const StreamProto &stream, int data_fd)
{
MutexLock lock(&mutex);
- streams.insert(make_pair(stream.stream_id(), new Stream(stream)));
+ streams.insert(make_pair(stream.stream_id(), new Stream(stream, data_fd)));
}
-void Server::set_backlog_size(const std::string &stream_id, size_t new_size)
+void Server::set_backlog_size(const string &stream_id, size_t new_size)
{
MutexLock lock(&mutex);
assert(streams.count(stream_id) != 0);
streams[stream_id]->set_backlog_size(new_size);
}
-void Server::set_header(const string &stream_id, const string &header)
+void Server::set_encoding(const string &stream_id, Stream::Encoding encoding)
{
MutexLock lock(&mutex);
- find_stream(stream_id)->header = header;
+ assert(streams.count(stream_id) != 0);
+ streams[stream_id]->encoding = encoding;
+}
+
+void Server::set_header(const string &stream_id, const string &http_header, const string &stream_header)
+{
+ MutexLock lock(&mutex);
+ find_stream(stream_id)->http_header = http_header;
+ find_stream(stream_id)->stream_header = stream_header;
// If there are clients we haven't sent anything to yet, we should give
// them the header, so push back into the SENDING_HEADER state.
}
}
-void Server::set_mark_pool(const std::string &stream_id, MarkPool *mark_pool)
+void Server::set_mark_pool(const string &stream_id, MarkPool *mark_pool)
{
MutexLock lock(&mutex);
assert(clients.empty());
return;
}
if (ret == -1) {
- perror("read");
+ log_perror("read");
close_client(client);
return;
}
switch (status) {
case RP_OUT_OF_SPACE:
- fprintf(stderr, "WARNING: fd %d sent overlong request!\n", client->sock);
+ log(WARNING, "[%s] Client sent overlong request!", client->remote_addr.c_str());
close_client(client);
return;
case RP_NOT_FINISHED_YET:
// See if there's more data for us.
goto read_request_again;
case RP_EXTRA_DATA:
- fprintf(stderr, "WARNING: fd %d had junk data after request!\n", client->sock);
+ log(WARNING, "[%s] Junk data after request!", client->remote_addr.c_str());
close_client(client);
return;
case RP_FINISHED:
if (ret == -1) {
// Error! Postcondition #1.
- perror("write");
+ log_perror("write");
close_client(client);
return;
}
return;
}
if (bytes_to_send > stream->backlog_size) {
- fprintf(stderr, "WARNING: fd %d lost %lld bytes, maybe too slow connection\n",
- client->sock,
- (long long int)(bytes_to_send - stream->backlog_size));
+ size_t bytes_lost = bytes_to_send - stream->backlog_size;
client->stream_pos = stream->bytes_received - stream->backlog_size;
- client->bytes_lost += bytes_to_send - stream->backlog_size;
+ client->bytes_lost += bytes_lost;
++client->num_loss_events;
bytes_to_send = stream->backlog_size;
+
+ double loss_fraction = double(client->bytes_lost) / double(client->bytes_lost + client->bytes_sent);
+ log(WARNING, "[%s] Client lost %lld bytes (total loss: %.2f%%), maybe too slow connection",
+ client->remote_addr.c_str(),
+ (long long int)(bytes_lost),
+ 100.0 * loss_fraction);
}
// See if we need to split across the circular buffer.
}
if (ret == -1) {
// Error, close; postcondition #1.
- perror("sendfile");
+ log_perror("sendfile");
close_client(client);
return;
}
// We don't have any more data for this client, so put it to sleep.
// This is postcondition #3.
stream->put_client_to_sleep(client);
- } else if (more_data && ret == bytes_to_send) {
+ } else if (more_data && size_t(ret) == bytes_to_send) {
goto sending_data_again;
}
break;
}
if (setsockopt(client->sock, SOL_SOCKET, SO_MARK, &client->fwmark, sizeof(client->fwmark)) == -1) {
if (client->fwmark != 0) {
- perror("setsockopt(SO_MARK)");
+ log_perror("setsockopt(SO_MARK)");
}
}
client->request.clear();
void Server::construct_header(Client *client)
{
- client->header_or_error = find_stream(client->stream_id)->header;
+ Stream *stream = find_stream(client->stream_id);
+ if (stream->encoding == Stream::STREAM_ENCODING_RAW) {
+ client->header_or_error = stream->http_header +
+ "\r\n" +
+ stream->stream_header;
+ } else if (stream->encoding == Stream::STREAM_ENCODING_METACUBE) {
+ client->header_or_error = stream->http_header +
+ "Content-encoding: metacube\r\n" +
+ "\r\n";
+ if (!stream->stream_header.empty()) {
+ metacube_block_header hdr;
+ memcpy(hdr.sync, METACUBE_SYNC, sizeof(hdr.sync));
+ hdr.size = htonl(stream->stream_header.size());
+ hdr.flags = htonl(METACUBE_FLAGS_HEADER);
+ client->header_or_error.append(
+ string(reinterpret_cast<char *>(&hdr), sizeof(hdr)));
+ }
+ client->header_or_error.append(stream->stream_header);
+ } else {
+ assert(false);
+ }
// Switch states.
client->state = Client::SENDING_HEADER;
epoll_event ev;
ev.events = EPOLLOUT | EPOLLET | EPOLLRDHUP;
- ev.data.u64 = 0; // Keep Valgrind happy.
- ev.data.fd = client->sock;
+ ev.data.u64 = reinterpret_cast<uint64_t>(client);
if (epoll_ctl(epoll_fd, EPOLL_CTL_MOD, client->sock, &ev) == -1) {
- perror("epoll_ctl(EPOLL_CTL_MOD)");
+ log_perror("epoll_ctl(EPOLL_CTL_MOD)");
exit(1);
}
}
epoll_event ev;
ev.events = EPOLLOUT | EPOLLET | EPOLLRDHUP;
- ev.data.u64 = 0; // Keep Valgrind happy.
- ev.data.fd = client->sock;
+ ev.data.u64 = reinterpret_cast<uint64_t>(client);
if (epoll_ctl(epoll_fd, EPOLL_CTL_MOD, client->sock, &ev) == -1) {
- perror("epoll_ctl(EPOLL_CTL_MOD)");
+ log_perror("epoll_ctl(EPOLL_CTL_MOD)");
exit(1);
}
}
void Server::close_client(Client *client)
{
if (epoll_ctl(epoll_fd, EPOLL_CTL_DEL, client->sock, NULL) == -1) {
- perror("epoll_ctl(EPOLL_CTL_DEL)");
+ log_perror("epoll_ctl(EPOLL_CTL_DEL)");
exit(1);
}
}
}
+ // Log to access_log.
+ access_log->write(client->get_stats());
+
// Bye-bye!
int ret;
do {
} while (ret == -1 && errno == EINTR);
if (ret == -1) {
- perror("close");
+ log_perror("close");
}
clients.erase(client->sock);
projects / cubemap / blobdiff