/**
* pthread entry point, running the reader event base.
*/
void *
comet_run_readers(void *ptr) {
struct reader_thread *rt = ptr;
int i, j;
rt->base = event_base_new();
for(i = 0; i < rt->channel_count; ++i) {
char *chan = rt->channels[i];
char *url = calloc(strlen(chan) + 17, 1);
sprintf(url, "/subscribe?name=%s", chan);
for(j = 0; j < rt->reader_per_chan; ++j) {
struct evhttp_connection *evcon = evhttp_connection_new(rt->hi->host, rt->hi->port);
struct evhttp_request *evreq = evhttp_request_new(on_end_of_subscribe, rt);
evhttp_connection_set_base(evcon, rt->base);
evhttp_request_set_chunked_cb(evreq, on_http_message_chunk);
evhttp_make_request(evcon, evreq, EVHTTP_REQ_GET, url);
/* printf("[SUBSCRIBE: http://127.0.0.1:1234%s]\n", url); */
}
}
event_base_dispatch(rt->base);
return NULL;
}
TEvhttpClientChannel::TEvhttpClientChannel(const std::string& host,
const std::string& path,
const char* address,
int port,
struct event_base* eb)
: host_(host), path_(path), recvBuf_(NULL), conn_(NULL) {
conn_ = evhttp_connection_new(address, port);
if (conn_ == NULL) {
throw TException("evhttp_connection_new failed");
}
evhttp_connection_set_base(conn_, eb);
}
IoObject *IoEvConnection_connect(IoEvConnection *self, IoObject *locals, IoMessage *m)
{
IoEventManager *em = IoObject_getSlot_(self, IOSYMBOL("eventManager"));
IoSeq *address = IoObject_seqGetSlot_(self, IOSYMBOL("address"));
int port = IoObject_doubleGetSlot_(self, IOSYMBOL("port"));
IOASSERT(CONN(self) == 0x0, "already have connection");
IOASSERT(ISEEVENTMANAGER(em), "eventManager slot not set properly");
//printf("IoEventManager_rawBase(em) = %p\n", (void *)IoEventManager_rawBase(em));
IoObject_setDataPointer_(self, evhttp_connection_new(CSTRING(address), port));
evhttp_connection_set_base(CONN(self), IoEventManager_rawBase(em));
evhttp_connection_set_closecb(CONN(self), IoEvConnection_ConnectionCloseCallback, self);
return self;
}
void
http_request::renew_request()
{
/* free connections & request */
if (m_cn)
evhttp_connection_free(m_cn);
#if !defined(_EVENT_NUMERIC_VERSION) || _EVENT_NUMERIC_VERSION < 0x02000000
m_cn = evhttp_connection_new(m_host.c_str(), m_port);
evhttp_connection_set_base(m_cn, m_base);
#else
m_cn = evhttp_connection_base_new(
m_base, NULL,
m_host.c_str(),
m_port);
#endif
m_req = evhttp_request_new(http_request::download_callback, this);
evhttp_make_request(m_cn, m_req, m_type, m_query.c_str());
evhttp_add_header(m_req->output_headers,
"Host", m_host.c_str());
}
bool LibEventHttpClient::send(const std::string &url,
const std::vector<std::string> &headers,
int timeoutSeconds, bool async,
const void *data /* = NULL */,
int size /* = 0 */) {
clear();
m_url = url;
evhttp_request* request = evhttp_request_new(on_request_completed, this);
// request headers
bool keepalive = true;
bool addHost = true;
for (unsigned int i = 0; i < headers.size(); i++) {
const std::string &header = headers[i];
size_t pos = header.find(':');
if (pos != std::string::npos && header[pos + 1] == ' ') {
std::string name = header.substr(0, pos);
if (strcasecmp(name.c_str(), "Connection") == 0) {
keepalive = false;
} else if (strcasecmp(name.c_str(), "Host") == 0) {
addHost = false;
}
int ret = evhttp_add_header(request->output_headers,
name.c_str(), header.c_str() + pos + 2);
if (ret >= 0) {
continue;
}
}
Logger::Error("invalid request header: [%s]", header.c_str());
}
if (keepalive) {
evhttp_add_header(request->output_headers, "Connection", "keep-alive");
}
if (addHost) {
// REVIEW: libevent never sends a Host header (nor does it properly send
// HTTP 400 for HTTP/1.1 requests without such a header), in blatant
// violation of RFC2616; this should perhaps be fixed in the library
// proper. For now, add it if it wasn't set by the caller.
if (m_port == 80) {
evhttp_add_header(request->output_headers, "Host", m_address.c_str());
} else {
std::ostringstream ss;
ss << m_address << ":" << m_port;
evhttp_add_header(request->output_headers, "Host", ss.str().c_str());
}
}
// post data
if (data && size) {
evbuffer_add(request->output_buffer, data, size);
}
// url
evhttp_cmd_type cmd = data ? EVHTTP_REQ_POST : EVHTTP_REQ_GET;
// if we have a cached connection, we need to pump the event loop to clear
// any "connection closed" events that may be sitting there patiently.
if (m_conn) {
event_base_loop(m_eventBase, EVLOOP_NONBLOCK);
}
// even if we had an m_conn immediately above, it may have been cleared out
// by onConnectionClosed().
if (m_conn == nullptr) {
m_conn = evhttp_connection_new(m_address.c_str(), m_port);
evhttp_connection_set_closecb(m_conn, on_connection_closed, this);
evhttp_connection_set_base(m_conn, m_eventBase);
}
int ret = evhttp_make_request(m_conn, request, cmd, url.c_str());
if (ret != 0) {
Logger::Error("evhttp_make_request failed");
return false;
}
if (timeoutSeconds > 0) {
struct timeval timeout;
timeout.tv_sec = timeoutSeconds;
timeout.tv_usec = 0;
event_set(&m_eventTimeout, -1, 0, timer_callback, m_eventBase);
event_base_set(m_eventBase, &m_eventTimeout);
event_add(&m_eventTimeout, &timeout);
}
if (async) {
m_thread = new AsyncFunc<LibEventHttpClient>
(this, &LibEventHttpClient::sendImpl);
m_thread->start();
} else {
IOStatusHelper io("libevent_http", m_address.c_str(), m_port);
sendImpl();
}
return true;
}
/* Thread: main (pairing) */
static int
send_pairing_request(struct remote_info *ri, char *req_uri, int family)
{
struct evhttp_connection *evcon;
struct evhttp_request *req;
char *address;
unsigned short port;
int ret;
switch (family)
{
case AF_INET:
if (!ri->v4_address)
return -1;
address = ri->v4_address;
port = ri->v4_port;
break;
case AF_INET6:
if (!ri->v6_address)
return -1;
address = ri->v6_address;
port = ri->v6_port;
break;
default:
return -1;
}
evcon = evhttp_connection_new(address, port);
if (!evcon)
{
DPRINTF(E_LOG, L_REMOTE, "Could not create connection for pairing with %s\n", ri->pi.name);
return -1;
}
evhttp_connection_set_base(evcon, evbase_main);
req = evhttp_request_new(pairing_request_cb, ri);
if (!req)
{
DPRINTF(E_WARN, L_REMOTE, "Could not create HTTP request for pairing\n");
goto request_fail;
}
ret = evhttp_make_request(evcon, req, EVHTTP_REQ_GET, req_uri);
if (ret < 0)
{
DPRINTF(E_WARN, L_REMOTE, "Could not make pairing request\n");
goto request_fail;
}
ri->evcon = evcon;
return 0;
request_fail:
evhttp_connection_free(evcon);
return -1;
}
bool LibEventHttpClient::send(const std::string &url,
const std::vector<std::string> &headers,
int timeoutSeconds, bool async,
const void *data /* = NULL */,
int size /* = 0 */) {
clear();
m_url = url;
if (m_conn == NULL) {
m_conn = evhttp_connection_new(m_address.c_str(), m_port);
evhttp_connection_set_closecb(m_conn, on_connection_closed, this);
evhttp_connection_set_base(m_conn, m_eventBase);
}
m_request = evhttp_request_new(on_request_completed, this);
// REVIEW: libevent never sends a Host header (nor does it properly send HTTP
// 400 for HTTP/1.1 requests without such a header), in blatent violation of
// RFC2616; this should perhaps be fixed in the library proper.
if (m_port == 80) {
evhttp_add_header(m_request->output_headers, "Host", m_address.c_str());
} else {
std::ostringstream ss;
ss << m_address << ":" << m_port;
evhttp_add_header(m_request->output_headers, "Host", ss.str().c_str());
}
// request headers
bool keepalive = true;
for (unsigned int i = 0; i < headers.size(); i++) {
const std::string &header = headers[i];
size_t pos = header.find(':');
if (pos != string::npos && header[pos + 1] == ' ') {
string name = header.substr(0, pos);
if (strcasecmp(name.c_str(), "Connection") == 0) {
keepalive = false;
}
int ret = evhttp_add_header(m_request->output_headers,
name.c_str(), header.c_str() + pos + 2);
if (ret >= 0) {
continue;
}
}
Logger::Error("invalid request header: [%s]", header.c_str());
}
if (keepalive) {
evhttp_add_header(m_request->output_headers, "Connection", "keep-alive");
}
// post data
if (data && size) {
evbuffer_add(m_request->output_buffer, data, size);
}
// url
evhttp_cmd_type cmd = data ? EVHTTP_REQ_POST : EVHTTP_REQ_GET;
int ret = evhttp_make_request(m_conn, m_request, cmd, url.c_str());
if (ret != 0) {
Logger::Error("evhttp_make_request failed");
return false;
}
if (timeoutSeconds > 0) {
struct timeval timeout;
timeout.tv_sec = timeoutSeconds;
timeout.tv_usec = 0;
event_set(&m_eventTimeout, -1, 0, timer_callback, m_eventBase);
event_base_set(m_eventBase, &m_eventTimeout);
event_add(&m_eventTimeout, &timeout);
}
if (async) {
m_thread = new AsyncFunc<LibEventHttpClient>
(this, &LibEventHttpClient::sendImpl);
m_thread->start();
} else {
sendImpl();
}
return true;
}
int
scan_metadata_icy(char *url, struct media_file_info *mfi)
{
struct evhttp_connection *evcon;
struct evhttp_request *req;
struct icy_ctx *ctx;
int ret;
int i;
status = ICY_INIT;
/* We can set this straight away */
mfi->url = strdup(url);
ctx = (struct icy_ctx *)malloc(sizeof(struct icy_ctx));
if (!ctx)
{
DPRINTF(E_LOG, L_SCAN, "Out of memory for ICY metadata context\n");
goto no_icy;
}
memset(ctx, 0, sizeof(struct icy_ctx));
ctx->url = evhttp_encode_uri(url);
/* TODO https */
av_url_split(NULL, 0, NULL, 0, ctx->hostname, sizeof(ctx->hostname), &ctx->port, ctx->path, sizeof(ctx->path), ctx->url);
if (ctx->port < 0)
ctx->port = 80;
/* Resolve IP address */
ret = resolve_address(ctx->hostname, ctx->address, sizeof(ctx->address));
if (ret < 0)
{
DPRINTF(E_LOG, L_SCAN, "Could not find IP address of %s\n", ctx->hostname);
return -1;
}
DPRINTF(E_DBG, L_SCAN, "URL %s converted to hostname %s, port %d, path %s, IP %s\n", ctx->url, ctx->hostname, ctx->port, ctx->path, ctx->address);
/* Set up connection */
evcon = evhttp_connection_new(ctx->address, (unsigned short)ctx->port);
if (!evcon)
{
DPRINTF(E_LOG, L_SCAN, "Could not create connection to %s\n", ctx->hostname);
goto no_icy;
}
evhttp_connection_set_base(evcon, evbase_main);
evhttp_connection_set_timeout(evcon, ICY_TIMEOUT);
/* Set up request */
req = evhttp_request_new(scan_icy_request_cb, mfi);
if (!req)
{
DPRINTF(E_LOG, L_SCAN, "Could not create request to %s\n", ctx->hostname);
evhttp_connection_free(evcon);
goto no_icy;
}
req->header_cb = scan_icy_header_cb;
evhttp_add_header(req->output_headers, "Host", ctx->hostname);
evhttp_add_header(req->output_headers, "Icy-MetaData", "1");
/* Make request */
status = ICY_WAITING;
ret = evhttp_make_request(evcon, req, EVHTTP_REQ_GET, ctx->path);
if (ret < 0)
{
DPRINTF(E_LOG, L_SCAN, "Could not make request to %s\n", ctx->hostname);
status = ICY_DONE;
evhttp_connection_free(evcon);
goto no_icy;
}
DPRINTF(E_INFO, L_SCAN, "Making request to %s asking for ICY (Shoutcast) metadata\n", url);
/* Can't count on server support for ICY metadata, so
* while waiting for a reply make a parallel call to scan_metadata_ffmpeg.
* This call will also determine final return value.
*/
no_icy:
ret = scan_metadata_ffmpeg(url, mfi);
/* Wait till ICY request completes or we reach timeout */
for (i = 0; (status == ICY_WAITING) && (i <= ICY_TIMEOUT); i++)
sleep(1);
free_icy(ctx);
DPRINTF(E_DBG, L_SCAN, "scan_metadata_icy exiting with status %d after waiting %d sec\n", status, i);
return ret;
}
