#include <pwd.h>
#include <grp.h>
#include <ctype.h>
+#include <poll.h>
#include "common.h"
#include "log.h"
#include "registry.h"
#include "web_client.h"
-#include "../config.h"
#define INITIAL_WEB_DATA_LENGTH 16384
#define WEB_REQUEST_LENGTH 16384
#define TOO_BIG_REQUEST 16384
int web_client_timeout = DEFAULT_DISCONNECT_IDLE_WEB_CLIENTS_AFTER_SECONDS;
-int web_enable_gzip = 1;
+
+#ifdef NETDATA_WITH_ZLIB
+int web_enable_gzip = 1, web_gzip_level = 3, web_gzip_strategy = Z_DEFAULT_STRATEGY;
+#endif /* NETDATA_WITH_ZLIB */
extern int netdata_exit;
struct web_client *web_clients = NULL;
unsigned long long web_clients_count = 0;
+inline int web_client_crock_socket(struct web_client *w) {
+#ifdef TCP_CORK
+ if(likely(!w->tcp_cork && w->ofd != -1)) {
+ w->tcp_cork = 1;
+ if(unlikely(setsockopt(w->ofd, IPPROTO_TCP, TCP_CORK, (char *) &w->tcp_cork, sizeof(int)) != 0)) {
+ error("%llu: failed to enable TCP_CORK on socket.", w->id);
+ w->tcp_cork = 0;
+ return -1;
+ }
+ }
+#endif /* TCP_CORK */
+
+ return 0;
+}
+
+inline int web_client_uncrock_socket(struct web_client *w) {
+#ifdef TCP_CORK
+ if(likely(w->tcp_cork && w->ofd != -1)) {
+ w->tcp_cork = 0;
+ if(unlikely(setsockopt(w->ofd, IPPROTO_TCP, TCP_CORK, (char *) &w->tcp_cork, sizeof(int)) != 0)) {
+ error("%llu: failed to disable TCP_CORK on socket.", w->id);
+ w->tcp_cork = 1;
+ return -1;
+ }
+ }
+#endif /* TCP_CORK */
+
+ return 0;
+}
+
struct web_client *web_client_create(int listener)
{
struct web_client *w;
w->client_port[NI_MAXSERV] = '\0';
switch(sadr->sa_family) {
-
case AF_INET:
debug(D_WEB_CLIENT_ACCESS, "%llu: New IPv4 web client from %s port %s on socket %d.", w->id, w->client_ip, w->client_port, w->ifd);
break;
strcpy(w->client_ip, &w->client_ip[7]);
debug(D_WEB_CLIENT_ACCESS, "%llu: New IPv4 web client from %s port %s on socket %d.", w->id, w->client_ip, w->client_port, w->ifd);
}
- debug(D_WEB_CLIENT_ACCESS, "%llu: New IPv6 web client from %s port %s on socket %d.", w->id, w->client_ip, w->client_port, w->ifd);
+ else
+ debug(D_WEB_CLIENT_ACCESS, "%llu: New IPv6 web client from %s port %s on socket %d.", w->id, w->client_ip, w->client_port, w->ifd);
break;
default:
}
int flag = 1;
- if(setsockopt(w->ifd, SOL_SOCKET, SO_KEEPALIVE, (char *) &flag, sizeof(int)) != 0) error("%llu: Cannot set SO_KEEPALIVE on socket.", w->id);
+ if(setsockopt(w->ofd, IPPROTO_TCP, TCP_NODELAY, (char *) &flag, sizeof(int)) != 0)
+ error("%llu: failed to enable TCP_NODELAY on socket.", w->id);
+
+ flag = 1;
+ if(setsockopt(w->ifd, SOL_SOCKET, SO_KEEPALIVE, (char *) &flag, sizeof(int)) != 0)
+ error("%llu: Cannot set SO_KEEPALIVE on socket.", w->id);
+
+
}
w->response.data = buffer_create(INITIAL_WEB_DATA_LENGTH);
return(w);
}
-void web_client_reset(struct web_client *w)
-{
- struct timeval tv;
- gettimeofday(&tv, NULL);
+void web_client_reset(struct web_client *w) {
+ web_client_uncrock_socket(w);
debug(D_WEB_CLIENT, "%llu: Reseting client.", w->id);
- if(w->stats_received_bytes || w->stats_sent_bytes) {
- global_statistics_lock();
+ if(likely(w->last_url[0])) {
+ struct timeval tv;
+ gettimeofday(&tv, NULL);
+
+ size_t size = (w->mode == WEB_CLIENT_MODE_FILECOPY)?w->response.rlen:w->response.data->len;
+ size_t sent = size;
+#ifdef NETDATA_WITH_ZLIB
+ if(likely(w->response.zoutput)) sent = (size_t)w->response.zstream.total_out;
+#endif
+
+ // --------------------------------------------------------------------
+ // global statistics
+
+ if(web_server_mode == WEB_SERVER_MODE_MULTI_THREADED)
+ global_statistics_lock();
+
global_statistics.web_requests++;
global_statistics.web_usec += usecdiff(&tv, &w->tv_in);
global_statistics.bytes_received += w->stats_received_bytes;
global_statistics.bytes_sent += w->stats_sent_bytes;
- global_statistics_unlock();
- }
- w->stats_received_bytes = 0;
- w->stats_sent_bytes = 0;
+ global_statistics.content_size += size;
+ global_statistics.compressed_content_size += sent;
- long sent = (w->mode == WEB_CLIENT_MODE_FILECOPY)?w->response.rlen:w->response.data->len;
+ if(web_server_mode == WEB_SERVER_MODE_MULTI_THREADED)
+ global_statistics_unlock();
-#ifdef NETDATA_WITH_ZLIB
- if(likely(w->response.zoutput)) sent = (long)w->response.zstream.total_out;
-#endif
+ w->stats_received_bytes = 0;
+ w->stats_sent_bytes = 0;
- long size = (w->mode == WEB_CLIENT_MODE_FILECOPY)?w->response.rlen:w->response.data->len;
-
- if(likely(w->last_url[0]))
- log_access("%llu: (sent/all = %ld/%ld bytes %0.0f%%, prep/sent/total = %0.2f/%0.2f/%0.2f ms) %s: %d '%s'",
- w->id,
- sent, size, -((size>0)?((float)(size-sent)/(float)size * 100.0):0.0),
- (float)usecdiff(&w->tv_ready, &w->tv_in) / 1000.0,
- (float)usecdiff(&tv, &w->tv_ready) / 1000.0,
- (float)usecdiff(&tv, &w->tv_in) / 1000.0,
- (w->mode == WEB_CLIENT_MODE_FILECOPY)?"filecopy":((w->mode == WEB_CLIENT_MODE_OPTIONS)?"options":"data"),
- w->response.code,
- w->last_url
+
+ // --------------------------------------------------------------------
+ // access log
+
+ log_access("%llu: (sent/all = %zu/%zu bytes %0.0f%%, prep/sent/total = %0.2f/%0.2f/%0.2f ms) %s: %d '%s'",
+ w->id,
+ sent, size, -((size > 0) ? ((float) (size - sent) / (float) size * 100.0) : 0.0),
+ (float) usecdiff(&w->tv_ready, &w->tv_in) / 1000.0,
+ (float) usecdiff(&tv, &w->tv_ready) / 1000.0,
+ (float) usecdiff(&tv, &w->tv_in) / 1000.0,
+ (w->mode == WEB_CLIENT_MODE_FILECOPY) ? "filecopy" : ((w->mode == WEB_CLIENT_MODE_OPTIONS)
+ ? "options" : "data"),
+ w->response.code,
+ w->last_url
);
+ }
if(unlikely(w->mode == WEB_CLIENT_MODE_FILECOPY)) {
- debug(D_WEB_CLIENT, "%llu: Closing filecopy input file.", w->id);
- close(w->ifd);
- w->ifd = w->ofd;
+ if(w->ifd != w->ofd) {
+ debug(D_WEB_CLIENT, "%llu: Closing filecopy input file descriptor %d.", w->id, w->ifd);
+ if(w->ifd != -1) close(w->ifd);
+ w->ifd = w->ofd;
+ }
}
w->last_url[0] = '\0';
w->origin[1] = '\0';
w->mode = WEB_CLIENT_MODE_NORMAL;
+
w->keepalive = 0;
w->decoded_url[0] = '\0';
// if we had enabled compression, release it
#ifdef NETDATA_WITH_ZLIB
if(w->response.zinitialized) {
- debug(D_DEFLATE, "%llu: Reseting compression.", w->id);
+ debug(D_DEFLATE, "%llu: Freeing compression resources.", w->id);
deflateEnd(&w->response.zstream);
w->response.zsent = 0;
w->response.zhave = 0;
#endif // NETDATA_WITH_ZLIB
}
-struct web_client *web_client_free(struct web_client *w)
-{
+struct web_client *web_client_free(struct web_client *w) {
+ web_client_reset(w);
+
struct web_client *n = w->next;
+ if(w == web_clients) web_clients = n;
debug(D_WEB_CLIENT_ACCESS, "%llu: Closing web client from %s port %s.", w->id, w->client_ip, w->client_port);
if(w->prev) w->prev->next = w->next;
if(w->next) w->next->prev = w->prev;
-
- if(w == web_clients) web_clients = w->next;
-
if(w->response.header_output) buffer_free(w->response.header_output);
if(w->response.header) buffer_free(w->response.header);
if(w->response.data) buffer_free(w->response.data);
- close(w->ifd);
- if(w->ofd != w->ifd) close(w->ofd);
+ if(w->ifd != -1) close(w->ifd);
+ if(w->ofd != -1 && w->ofd != w->ifd) close(w->ofd);
free(w);
global_statistics.connected_clients--;
return(n);
}
-uid_t web_files_uid(void)
-{
+uid_t web_files_uid(void) {
static char *web_owner = NULL;
static uid_t owner_uid = 0;
// while single threaded
struct passwd *pw = getpwnam(web_owner);
if(!pw) {
- error("User %s is not present. Ignoring option.", web_owner);
+ error("User '%s' is not present. Ignoring option.", web_owner);
owner_uid = geteuid();
}
else {
- debug(D_WEB_CLIENT, "Web files owner set to %s.\n", web_owner);
+ debug(D_WEB_CLIENT, "Web files owner set to %s.", web_owner);
owner_uid = pw->pw_uid;
}
}
return(owner_uid);
}
-gid_t web_files_gid(void)
-{
+gid_t web_files_gid(void) {
static char *web_group = NULL;
static gid_t owner_gid = 0;
// while single threaded
struct group *gr = getgrnam(web_group);
if(!gr) {
- error("Group %s is not present. Ignoring option.", web_group);
+ error("Group '%s' is not present. Ignoring option.", web_group);
owner_gid = getegid();
}
else {
- debug(D_WEB_CLIENT, "Web files group set to %s.\n", web_group);
+ debug(D_WEB_CLIENT, "Web files group set to %s.", web_group);
owner_gid = gr->gr_gid;
}
}
#ifdef NETDATA_WITH_ZLIB
void web_client_enable_deflate(struct web_client *w, int gzip) {
- if(w->response.zinitialized == 1) {
+ if(unlikely(w->response.zinitialized)) {
error("%llu: Compression has already be initialized for this client.", w->id);
return;
}
- if(w->response.sent) {
+ if(unlikely(w->response.sent)) {
error("%llu: Cannot enable compression in the middle of a conversation.", w->id);
return;
}
// }
// Select GZIP compression: windowbits = 15 + 16 = 31
- if(deflateInit2(&w->response.zstream, Z_DEFAULT_COMPRESSION, Z_DEFLATED, 15 + ((gzip)?16:0), 8, Z_DEFAULT_STRATEGY) != Z_OK) {
+ if(deflateInit2(&w->response.zstream, web_gzip_level, Z_DEFLATED, 15 + ((gzip)?16:0), 8, web_gzip_strategy) != Z_OK) {
error("%llu: Failed to initialize zlib. Proceeding without compression.", w->id);
return;
}
if(outFileName && *outFileName) {
buffer_sprintf(w->response.header, "Content-Disposition: attachment; filename=\"%s\"\r\n", outFileName);
- error("generating outfilename header: '%s'", outFileName);
+ debug(D_WEB_CLIENT, "%llu: generating outfilename header: '%s'", w->id, outFileName);
}
if(format == DATASOURCE_DATATABLE_JSONP) {
buffer_strcat(w->response.header_output, "\r\n");
- // disable TCP_NODELAY, to buffer the header
- int flag = 0;
- if(setsockopt(w->ofd, IPPROTO_TCP, TCP_NODELAY, (char *) &flag, sizeof(int)) != 0)
- error("%llu: failed to disable TCP_NODELAY on socket.", w->id);
-
// sent the HTTP header
debug(D_WEB_DATA, "%llu: Sending response HTTP header of size %d: '%s'"
, w->id
, buffer_tostring(w->response.header_output)
);
+ web_client_crock_socket(w);
+
bytes = send(w->ofd, buffer_tostring(w->response.header_output), buffer_strlen(w->response.header_output), 0);
- if(bytes != (ssize_t) buffer_strlen(w->response.header_output))
- error("%llu: HTTP Header failed to be sent (I sent %d bytes but the system sent %d bytes)."
- , w->id
- , buffer_strlen(w->response.header_output)
- , bytes);
+ if(bytes != (ssize_t) buffer_strlen(w->response.header_output)) {
+ if(bytes > 0)
+ w->stats_sent_bytes += bytes;
+
+ debug(D_WEB_CLIENT, "%llu: HTTP Header failed to be sent (I sent %d bytes but the system sent %d bytes). Closing web client.", w->id,
+ buffer_strlen(w->response.header_output), bytes);
+
+ WEB_CLIENT_IS_DEAD(w);
+ return;
+ }
else
w->stats_sent_bytes += bytes;
- // enable TCP_NODELAY, to send all data immediately at the next send()
- flag = 1;
- if(setsockopt(w->ofd, IPPROTO_TCP, TCP_NODELAY, (char *) &flag, sizeof(int)) != 0) error("%llu: failed to enable TCP_NODELAY on socket.", w->id);
-
// enable sending immediately if we have data
if(w->response.data->len) w->wait_send = 1;
else w->wait_send = 0;
// when it is commented, the program will copy the data using async I/O.
{
long len = sendfile(w->ofd, w->ifd, NULL, w->response.data->rbytes);
- if(len != w->response.data->rbytes) error("%llu: sendfile() should copy %ld bytes, but copied %ld. Falling back to manual copy.", w->id, w->response.data->rbytes, len);
- else web_client_reset(w);
+ if(len != w->response.data->rbytes)
+ error("%llu: sendfile() should copy %ld bytes, but copied %ld. Falling back to manual copy.", w->id, w->response.data->rbytes, len);
+ else
+ web_client_reset(w);
}
*/
}
}
}
-long web_client_send_chunk_header(struct web_client *w, long len)
+ssize_t web_client_send_chunk_header(struct web_client *w, size_t len)
{
debug(D_DEFLATE, "%llu: OPEN CHUNK of %d bytes (hex: %x).", w->id, len, len);
char buf[1024];
sprintf(buf, "%lX\r\n", len);
- ssize_t bytes = send(w->ofd, buf, strlen(buf), MSG_DONTWAIT);
+
+ ssize_t bytes = send(w->ofd, buf, strlen(buf), 0);
+ if(bytes > 0) {
+ debug(D_DEFLATE, "%llu: Sent chunk header %d bytes.", w->id, bytes);
+ w->stats_sent_bytes += bytes;
+ }
- if(bytes > 0) debug(D_DEFLATE, "%llu: Sent chunk header %d bytes.", w->id, bytes);
- else if(bytes == 0) debug(D_DEFLATE, "%llu: Did not send chunk header to the client.", w->id);
- else debug(D_DEFLATE, "%llu: Failed to send chunk header to client.", w->id);
+ else if(bytes == 0) {
+ debug(D_WEB_CLIENT, "%llu: Did not send chunk header to the client.", w->id);
+ WEB_CLIENT_IS_DEAD(w);
+ }
+ else {
+ debug(D_WEB_CLIENT, "%llu: Failed to send chunk header to client.", w->id);
+ WEB_CLIENT_IS_DEAD(w);
+ }
return bytes;
}
-long web_client_send_chunk_close(struct web_client *w)
+ssize_t web_client_send_chunk_close(struct web_client *w)
{
//debug(D_DEFLATE, "%llu: CLOSE CHUNK.", w->id);
- ssize_t bytes = send(w->ofd, "\r\n", 2, MSG_DONTWAIT);
+ ssize_t bytes = send(w->ofd, "\r\n", 2, 0);
+ if(bytes > 0) {
+ debug(D_DEFLATE, "%llu: Sent chunk suffix %d bytes.", w->id, bytes);
+ w->stats_sent_bytes += bytes;
+ }
- if(bytes > 0) debug(D_DEFLATE, "%llu: Sent chunk suffix %d bytes.", w->id, bytes);
- else if(bytes == 0) debug(D_DEFLATE, "%llu: Did not send chunk suffix to the client.", w->id);
- else debug(D_DEFLATE, "%llu: Failed to send chunk suffix to client.", w->id);
+ else if(bytes == 0) {
+ debug(D_WEB_CLIENT, "%llu: Did not send chunk suffix to the client.", w->id);
+ WEB_CLIENT_IS_DEAD(w);
+ }
+ else {
+ debug(D_WEB_CLIENT, "%llu: Failed to send chunk suffix to client.", w->id);
+ WEB_CLIENT_IS_DEAD(w);
+ }
return bytes;
}
-long web_client_send_chunk_finalize(struct web_client *w)
+ssize_t web_client_send_chunk_finalize(struct web_client *w)
{
//debug(D_DEFLATE, "%llu: FINALIZE CHUNK.", w->id);
- ssize_t bytes = send(w->ofd, "\r\n0\r\n\r\n", 7, MSG_DONTWAIT);
+ ssize_t bytes = send(w->ofd, "\r\n0\r\n\r\n", 7, 0);
+ if(bytes > 0) {
+ debug(D_DEFLATE, "%llu: Sent chunk suffix %d bytes.", w->id, bytes);
+ w->stats_sent_bytes += bytes;
+ }
- if(bytes > 0) debug(D_DEFLATE, "%llu: Sent chunk suffix %d bytes.", w->id, bytes);
- else if(bytes == 0) debug(D_DEFLATE, "%llu: Did not send chunk suffix to the client.", w->id);
- else debug(D_DEFLATE, "%llu: Failed to send chunk suffix to client.", w->id);
+ else if(bytes == 0) {
+ debug(D_WEB_CLIENT, "%llu: Did not send chunk finalize suffix to the client.", w->id);
+ WEB_CLIENT_IS_DEAD(w);
+ }
+ else {
+ debug(D_WEB_CLIENT, "%llu: Failed to send chunk finalize suffix to client.", w->id);
+ WEB_CLIENT_IS_DEAD(w);
+ }
return bytes;
}
#ifdef NETDATA_WITH_ZLIB
-long web_client_send_deflate(struct web_client *w)
+ssize_t web_client_send_deflate(struct web_client *w)
{
- long len = 0, t = 0;
+ ssize_t len = 0, t = 0;
// when using compression,
// w->response.sent is the amount of bytes passed through compression
debug(D_WEB_CLIENT, "%llu: Out of output data.", w->id);
// finalize the chunk
- if(w->response.sent != 0)
- t += web_client_send_chunk_finalize(w);
-
- // there can be two cases for this
- // A. we have done everything
- // B. we temporarily have nothing to send, waiting for the buffer to be filled by ifd
+ if(w->response.sent != 0) {
+ t = web_client_send_chunk_finalize(w);
+ if(t < 0) return t;
+ }
- if(w->mode == WEB_CLIENT_MODE_FILECOPY && w->wait_receive && w->ifd != w->ofd && w->response.rlen && w->response.rlen > w->response.data->len) {
+ if(w->mode == WEB_CLIENT_MODE_FILECOPY && w->wait_receive && w->response.rlen && w->response.rlen > w->response.data->len) {
// we have to wait, more data will come
debug(D_WEB_CLIENT, "%llu: Waiting for more data to become available.", w->id);
w->wait_send = 0;
- return(0);
+ return t;
}
- if(w->keepalive == 0) {
+ if(unlikely(!w->keepalive)) {
debug(D_WEB_CLIENT, "%llu: Closing (keep-alive is not enabled). %ld bytes sent.", w->id, w->response.sent);
- errno = 0;
- return(-1);
+ WEB_CLIENT_IS_DEAD(w);
+ return t;
}
// reset the client
web_client_reset(w);
- debug(D_WEB_CLIENT, "%llu: Done sending all data on socket. Waiting for next request on the same socket.", w->id);
- return(0);
+ debug(D_WEB_CLIENT, "%llu: Done sending all data on socket.", w->id);
+ return t;
}
if(w->response.zhave == w->response.zsent) {
// compress more input data
// close the previous open chunk
- if(w->response.sent != 0) t += web_client_send_chunk_close(w);
+ if(w->response.sent != 0) {
+ t = web_client_send_chunk_close(w);
+ if(t < 0) return t;
+ }
debug(D_DEFLATE, "%llu: Compressing %d new bytes starting from %d (and %d left behind).", w->id, (w->response.data->len - w->response.sent), w->response.sent, w->response.zstream.avail_in);
// give the compressor all the data not passed through the compressor yet
if(w->response.data->len > w->response.sent) {
-#ifdef NETDATA_INTERNAL_CHECKS
- if((long)w->response.sent - (long)w->response.zstream.avail_in < 0)
- error("internal error: avail_in is corrupted.");
-#endif
w->response.zstream.next_in = (Bytef *)&w->response.data->buffer[w->response.sent - w->response.zstream.avail_in];
w->response.zstream.avail_in += (uInt) (w->response.data->len - w->response.sent);
}
debug(D_DEFLATE, "%llu: Compression produced %d bytes.", w->id, w->response.zhave);
// open a new chunk
- t += web_client_send_chunk_header(w, w->response.zhave);
+ ssize_t t2 = web_client_send_chunk_header(w, w->response.zhave);
+ if(t2 < 0) return t2;
+ t += t2;
}
debug(D_WEB_CLIENT, "%llu: Sending %d bytes of data (+%d of chunk header).", w->id, w->response.zhave - w->response.zsent, t);
len = send(w->ofd, &w->response.zbuffer[w->response.zsent], (size_t) (w->response.zhave - w->response.zsent), MSG_DONTWAIT);
if(len > 0) {
+ w->stats_sent_bytes += len;
w->response.zsent += len;
- if(t > 0) len += t;
+ len += t;
debug(D_WEB_CLIENT, "%llu: Sent %d bytes.", w->id, len);
}
- else if(len == 0) debug(D_WEB_CLIENT, "%llu: Did not send any bytes to the client (zhave = %ld, zsent = %ld, need to send = %ld).", w->id, w->response.zhave, w->response.zsent, w->response.zhave - w->response.zsent);
- else debug(D_WEB_CLIENT, "%llu: Failed to send data to client. Reason: %s", w->id, strerror(errno));
+ else if(len == 0) {
+ debug(D_WEB_CLIENT, "%llu: Did not send any bytes to the client (zhave = %ld, zsent = %ld, need to send = %ld).", w->id, w->response.zhave, w->response.zsent, w->response.zhave - w->response.zsent);
+ WEB_CLIENT_IS_DEAD(w);
+ }
+ else {
+ debug(D_WEB_CLIENT, "%llu: Failed to send data to client.", w->id);
+ WEB_CLIENT_IS_DEAD(w);
+ }
return(len);
}
#endif // NETDATA_WITH_ZLIB
-long web_client_send(struct web_client *w)
-{
+ssize_t web_client_send(struct web_client *w) {
#ifdef NETDATA_WITH_ZLIB
if(likely(w->response.zoutput)) return web_client_send_deflate(w);
#endif // NETDATA_WITH_ZLIB
- long bytes;
+ ssize_t bytes;
if(unlikely(w->response.data->len - w->response.sent == 0)) {
// there is nothing to send
// A. we have done everything
// B. we temporarily have nothing to send, waiting for the buffer to be filled by ifd
- if(w->mode == WEB_CLIENT_MODE_FILECOPY && w->wait_receive && w->ifd != w->ofd && w->response.rlen && w->response.rlen > w->response.data->len) {
+ if(w->mode == WEB_CLIENT_MODE_FILECOPY && w->wait_receive && w->response.rlen && w->response.rlen > w->response.data->len) {
// we have to wait, more data will come
debug(D_WEB_CLIENT, "%llu: Waiting for more data to become available.", w->id);
w->wait_send = 0;
- return(0);
+ return 0;
}
- if(unlikely(w->keepalive == 0)) {
+ if(unlikely(!w->keepalive)) {
debug(D_WEB_CLIENT, "%llu: Closing (keep-alive is not enabled). %ld bytes sent.", w->id, w->response.sent);
- errno = 0;
- return(-1);
+ WEB_CLIENT_IS_DEAD(w);
+ return 0;
}
web_client_reset(w);
debug(D_WEB_CLIENT, "%llu: Done sending all data on socket. Waiting for next request on the same socket.", w->id);
- return(0);
+ return 0;
}
bytes = send(w->ofd, &w->response.data->buffer[w->response.sent], w->response.data->len - w->response.sent, MSG_DONTWAIT);
if(likely(bytes > 0)) {
+ w->stats_sent_bytes += bytes;
w->response.sent += bytes;
debug(D_WEB_CLIENT, "%llu: Sent %d bytes.", w->id, bytes);
}
- else if(likely(bytes == 0)) debug(D_WEB_CLIENT, "%llu: Did not send any bytes to the client.", w->id);
- else debug(D_WEB_CLIENT, "%llu: Failed to send data to client.", w->id);
+ else if(likely(bytes == 0)) {
+ debug(D_WEB_CLIENT, "%llu: Did not send any bytes to the client.", w->id);
+ WEB_CLIENT_IS_DEAD(w);
+ }
+ else {
+ debug(D_WEB_CLIENT, "%llu: Failed to send data to client.", w->id);
+ WEB_CLIENT_IS_DEAD(w);
+ }
return(bytes);
}
-long web_client_receive(struct web_client *w)
+ssize_t web_client_receive(struct web_client *w)
{
// do we have any space for more data?
buffer_need_bytes(w->response.data, WEB_REQUEST_LENGTH);
- long left = w->response.data->size - w->response.data->len;
- long bytes;
+ ssize_t left = w->response.data->size - w->response.data->len;
+ ssize_t bytes;
if(unlikely(w->mode == WEB_CLIENT_MODE_FILECOPY))
bytes = read(w->ifd, &w->response.data->buffer[w->response.data->len], (size_t) (left - 1));
bytes = recv(w->ifd, &w->response.data->buffer[w->response.data->len], (size_t) (left - 1), MSG_DONTWAIT);
if(likely(bytes > 0)) {
+ if(w->mode != WEB_CLIENT_MODE_FILECOPY)
+ w->stats_received_bytes += bytes;
+
size_t old = w->response.data->len;
w->response.data->len += bytes;
w->response.data->buffer[w->response.data->len] = '\0';
if(w->mode == WEB_CLIENT_MODE_FILECOPY) {
w->wait_send = 1;
- if(w->response.rlen && w->response.data->len >= w->response.rlen) w->wait_receive = 0;
+
+ if(w->response.rlen && w->response.data->len >= w->response.rlen)
+ w->wait_receive = 0;
}
}
else if(likely(bytes == 0)) {
// we are copying data from ifd to ofd
// let it finish copying...
w->wait_receive = 0;
- debug(D_WEB_CLIENT, "%llu: Disabling input.", w->id);
+
+ debug(D_WEB_CLIENT, "%llu: Read the whole file.", w->id);
+ if(w->ifd != w->ofd) close(w->ifd);
+ w->ifd = w->ofd;
}
else {
- bytes = -1;
- errno = 0;
+ debug(D_WEB_CLIENT, "%llu: failed to receive data.", w->id);
+ WEB_CLIENT_IS_DEAD(w);
}
}
+ else {
+ debug(D_WEB_CLIENT, "%llu: receive data failed.", w->id);
+ WEB_CLIENT_IS_DEAD(w);
+ }
return(bytes);
}
if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
error("Cannot set pthread cancel state to ENABLE.");
- struct timeval tv;
struct web_client *w = ptr;
- int retval;
- fd_set ifds, ofds, efds;
- int fdmax = 0;
+ struct pollfd fds[2], *ifd, *ofd;
+ int retval, fdmax = 0, timeout;
log_access("%llu: %s port %s connected on thread task id %d", w->id, w->client_ip, w->client_port, gettid());
for(;;) {
- FD_ZERO (&ifds);
- FD_ZERO (&ofds);
- FD_ZERO (&efds);
-
- FD_SET(w->ifd, &efds);
-
- if(w->ifd != w->ofd)
- FD_SET(w->ofd, &efds);
-
- if (w->wait_receive) {
- FD_SET(w->ifd, &ifds);
- if(w->ifd > fdmax) fdmax = w->ifd;
+ if(unlikely(w->dead)) {
+ debug(D_WEB_CLIENT, "%llu: client is dead.", w->id);
+ break;
+ }
+ else if(unlikely(!w->wait_receive && !w->wait_send)) {
+ debug(D_WEB_CLIENT, "%llu: client is not set for neither receiving nor sending data.");
+ break;
}
- if (w->wait_send) {
- FD_SET(w->ofd, &ofds);
- if(w->ofd > fdmax) fdmax = w->ofd;
+ if(unlikely(w->ifd < 0 || w->ofd < 0)) {
+ error("%llu: invalid file descriptor, ifd = %d, ofd = %d (required 0 <= fd", w->id, w->ifd, w->ofd);
+ break;
}
- tv.tv_sec = web_client_timeout;
- tv.tv_usec = 0;
+ if(w->ifd == w->ofd) {
+ fds[0].fd = w->ifd;
+ fds[0].events = 0;
+ fds[0].revents = 0;
- debug(D_WEB_CLIENT, "%llu: Waiting socket async I/O for %s %s", w->id, w->wait_receive?"INPUT":"", w->wait_send?"OUTPUT":"");
- retval = select(fdmax+1, &ifds, &ofds, &efds, &tv);
+ if(w->wait_receive) fds[0].events |= POLLIN;
+ if(w->wait_send) fds[0].events |= POLLOUT;
+
+ fds[1].fd = -1;
+ fds[1].events = 0;
+ fds[1].revents = 0;
- if(retval == -1) {
- debug(D_WEB_CLIENT_ACCESS, "%llu: LISTENER: select() failed.", w->id);
- continue;
+ ifd = ofd = &fds[0];
+
+ fdmax = 1;
}
- else if(!retval) {
- // timeout
- debug(D_WEB_CLIENT_ACCESS, "%llu: LISTENER: timeout.", w->id);
- break;
+ else {
+ fds[0].fd = w->ifd;
+ fds[0].events = 0;
+ fds[0].revents = 0;
+ if(w->wait_receive) fds[0].events |= POLLIN;
+ ifd = &fds[0];
+
+ fds[1].fd = w->ofd;
+ fds[1].events = 0;
+ fds[1].revents = 0;
+ if(w->wait_send) fds[1].events |= POLLOUT;
+ ofd = &fds[1];
+
+ fdmax = 2;
}
- if(FD_ISSET(w->ifd, &efds)) {
- debug(D_WEB_CLIENT_ACCESS, "%llu: Received error on input socket.", w->id);
+ debug(D_WEB_CLIENT, "%llu: Waiting socket async I/O for %s %s", w->id, w->wait_receive?"INPUT":"", w->wait_send?"OUTPUT":"");
+ errno = 0;
+ timeout = web_client_timeout * 1000;
+ retval = poll(fds, fdmax, timeout);
+
+ if(unlikely(retval == -1)) {
+ if(errno == EAGAIN || errno == EINTR) {
+ debug(D_WEB_CLIENT, "%llu: EAGAIN received.", w->id);
+ continue;
+ }
+
+ debug(D_WEB_CLIENT, "%llu: LISTENER: poll() failed (input fd = %d, output fd = %d). Closing client.", w->id, w->ifd, w->ofd);
break;
}
-
- if(FD_ISSET(w->ofd, &efds)) {
- debug(D_WEB_CLIENT_ACCESS, "%llu: Received error on output socket.", w->id);
+ else if(unlikely(!retval)) {
+ debug(D_WEB_CLIENT, "%llu: Timeout while waiting socket async I/O for %s %s", w->id, w->wait_receive?"INPUT":"", w->wait_send?"OUTPUT":"");
break;
}
- if(w->wait_send && FD_ISSET(w->ofd, &ofds)) {
- long bytes;
- if((bytes = web_client_send(w)) < 0) {
+ int used = 0;
+ if(w->wait_send && ofd->revents & POLLOUT) {
+ used++;
+ if(web_client_send(w) < 0) {
debug(D_WEB_CLIENT, "%llu: Cannot send data to client. Closing client.", w->id);
- errno = 0;
break;
}
- else
- w->stats_sent_bytes += bytes;
}
- if(w->wait_receive && FD_ISSET(w->ifd, &ifds)) {
- long bytes;
- if((bytes = web_client_receive(w)) < 0) {
+ if(w->wait_receive && (ifd->revents & POLLIN || ifd->revents & POLLPRI)) {
+ used++;
+ if(web_client_receive(w) < 0) {
debug(D_WEB_CLIENT, "%llu: Cannot receive data from client. Closing client.", w->id);
- errno = 0;
break;
}
- else
- w->stats_received_bytes += bytes;
if(w->mode == WEB_CLIENT_MODE_NORMAL) {
- debug(D_WEB_CLIENT, "%llu: Attempting to process received data (%ld bytes).", w->id, bytes);
- // info("%llu: Attempting to process received data (%ld bytes).", w->id, bytes);
+ debug(D_WEB_CLIENT, "%llu: Attempting to process received data.", w->id);
web_client_process(w);
}
+ }
+ if(unlikely(!used)) {
+ debug(D_WEB_CLIENT_ACCESS, "%llu: Received error on socket.", w->id);
+ break;
}
}
+ web_client_reset(w);
+
log_access("%llu: %s port %s disconnected from thread task id %d", w->id, w->client_ip, w->client_port, gettid());
debug(D_WEB_CLIENT, "%llu: done...", w->id);
- web_client_reset(w);
+ // close the sockets/files now
+ // to free file descriptors
+ if(w->ifd == w->ofd) {
+ if(w->ifd != -1) close(w->ifd);
+ }
+ else {
+ if(w->ifd != -1) close(w->ifd);
+ if(w->ofd != -1) close(w->ofd);
+ }
+ w->ifd = -1;
+ w->ofd = -1;
+
w->obsolete = 1;
+ pthread_exit(NULL);
return NULL;
}
projects / netdata.git / blobdiff