static ngx_int_t
ngx_http_spdy_serverpush_header_filter(ngx_http_request_t *r)
{
int rc;
size_t len;
u_char *p, *buf, *last;
ngx_buf_t *b;
ngx_str_t host;
ngx_uint_t i, j, count, port;
ngx_chain_t *cl;
ngx_list_part_t *part, *pt;
ngx_table_elt_t *header, *h;
ngx_connection_t *c;
ngx_http_cleanup_t *cln;
ngx_http_core_loc_conf_t *clcf;
ngx_http_core_srv_conf_t *cscf;
ngx_http_spdy_stream_t *stream;
ngx_http_spdy_out_frame_t *frame;
ngx_http_spdy_connection_t *sc;
struct sockaddr_in *sin;
#if (NGX_HAVE_INET6)
struct sockaddr_in6 *sin6;
#endif
u_char addr[NGX_SOCKADDR_STRLEN];
if (!r->spdy_stream) {
return ngx_http_next_header_filter(r);
}
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"spdy serverpush module header filter");
if (r->header_sent) {
return NGX_OK;
}
r->header_sent = 1;
if (r != r->main) {
return NGX_OK;
}
c = r->connection;
if (r->method == NGX_HTTP_HEAD) {
r->header_only = 1;
}
switch (r->headers_out.status) {
case NGX_HTTP_OK:
case NGX_HTTP_PARTIAL_CONTENT:
break;
case NGX_HTTP_NOT_MODIFIED:
r->header_only = 1;
break;
case NGX_HTTP_NO_CONTENT:
r->header_only = 1;
ngx_str_null(&r->headers_out.content_type);
r->headers_out.content_length = NULL;
r->headers_out.content_length_n = -1;
/* fall through */
default:
r->headers_out.last_modified_time = -1;
r->headers_out.last_modified = NULL;
}
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"spdy serverpush module header filter 2");
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"From header Blaha spdy body filter \"%V?%V\"", &r->uri, &r->args);
len = NGX_SPDY_NV_NUM_SIZE
+ ngx_http_spdy_nv_nsize("version")
+ ngx_http_spdy_nv_vsize("HTTP/1.1")
+ ngx_http_spdy_nv_nsize("status")
+ ngx_http_spdy_nv_vsize("418");
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
len += ngx_http_spdy_nv_nsize("url")
+ngx_http_spdy_nv_vsize("https://localhost/test.js");
if (r->headers_out.server == NULL) {
len += ngx_http_spdy_nv_nsize("server");
len += clcf->server_tokens ? ngx_http_spdy_nv_vsize(NGINX_VER)
: ngx_http_spdy_nv_vsize("nginx");
}
if (r->headers_out.date == NULL) {
len += ngx_http_spdy_nv_nsize("date")
+ ngx_http_spdy_nv_vsize("Wed, 31 Dec 1986 10:00:00 GMT");
}
if (r->headers_out.content_type.len) {
len += ngx_http_spdy_nv_nsize("content-type")
+ NGX_SPDY_NV_VLEN_SIZE + r->headers_out.content_type.len;
if (r->headers_out.content_type_len == r->headers_out.content_type.len
&& r->headers_out.charset.len)
{
len += sizeof("; charset=") - 1 + r->headers_out.charset.len;
}
}
if (r->headers_out.content_length == NULL
&& r->headers_out.content_length_n >= 0)
{
len += ngx_http_spdy_nv_nsize("content-length")
+ NGX_SPDY_NV_VLEN_SIZE + NGX_OFF_T_LEN;
}
if (r->headers_out.last_modified == NULL
&& r->headers_out.last_modified_time != -1)
{
len += ngx_http_spdy_nv_nsize("last-modified")
+ ngx_http_spdy_nv_vsize("Wed, 31 Dec 1986 10:00:00 GMT");
}
if (r->headers_out.location
&& r->headers_out.location->value.len
&& r->headers_out.location->value.data[0] == '/')
{
r->headers_out.location->hash = 0;
if (clcf->server_name_in_redirect) {
cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
host = cscf->server_name;
} else if (r->headers_in.server.len) {
host = r->headers_in.server;
} else {
host.len = NGX_SOCKADDR_STRLEN;
host.data = addr;
if (ngx_connection_local_sockaddr(c, &host, 0) != NGX_OK) {
return NGX_ERROR;
}
}
switch (c->local_sockaddr->sa_family) {
#if (NGX_HAVE_INET6)
case AF_INET6:
sin6 = (struct sockaddr_in6 *) c->local_sockaddr;
port = ntohs(sin6->sin6_port);
break;
#endif
#if (NGX_HAVE_UNIX_DOMAIN)
case AF_UNIX:
port = 0;
break;
#endif
default: /* AF_INET */
sin = (struct sockaddr_in *) c->local_sockaddr;
port = ntohs(sin->sin_port);
break;
}
len += ngx_http_spdy_nv_nsize("location")
+ ngx_http_spdy_nv_vsize("https://")
+ host.len
+ r->headers_out.location->value.len;
if (clcf->port_in_redirect) {
#if (NGX_HTTP_SSL)
if (c->ssl)
port = (port == 443) ? 0 : port;
else
#endif
port = (port == 80) ? 0 : port;
} else {
port = 0;
}
if (port) {
len += sizeof(":65535") - 1;
}
} else {
ngx_str_null(&host);
port = 0;
}
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"spdy serverpush module header filter 3");
part = &r->headers_out.headers.part;
header = part->elts;
int isSet=0;
for (i = 0; /* void */; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
header = part->elts;
i = 0;
}
if (header[i].hash == 0) {
continue;
}
ngx_str_t xac = ngx_string("X-Associated-Content");
if(ngx_strncmp(&header[i].key, &xac, 20) == 0 )
{
isSet=1;
}
len += NGX_SPDY_NV_NLEN_SIZE + header[i].key.len
+ NGX_SPDY_NV_VLEN_SIZE + header[i].value.len;
}
buf = ngx_alloc(len, r->pool->log);
if (buf == NULL) {
return NGX_ERROR;
}
last = buf + NGX_SPDY_NV_NUM_SIZE;
last = ngx_http_spdy_nv_write_name(last, "version");
last = ngx_http_spdy_nv_write_val(last, "HTTP/1.1");
last = ngx_http_spdy_nv_write_name(last, "status");
last = ngx_spdy_frame_write_uint16(last, 3);
last = ngx_sprintf(last, "%03ui", r->headers_out.status);
count = 2;
last = ngx_http_spdy_nv_write_name(last, "url");
last = ngx_http_spdy_nv_write_val(last, "https://localhost/test.js");
count++;
if (r->headers_out.server == NULL) {
last = ngx_http_spdy_nv_write_name(last, "server");
last = clcf->server_tokens
? ngx_http_spdy_nv_write_val(last, NGINX_VER)
: ngx_http_spdy_nv_write_val(last, "nginx");
count++;
}
if (r->headers_out.date == NULL) {
last = ngx_http_spdy_nv_write_name(last, "date");
last = ngx_http_spdy_nv_write_vlen(last, ngx_cached_http_time.len);
last = ngx_cpymem(last, ngx_cached_http_time.data,
ngx_cached_http_time.len);
count++;
}
if (r->headers_out.content_type.len) {
last = ngx_http_spdy_nv_write_name(last, "content-type");
p = last + NGX_SPDY_NV_VLEN_SIZE;
last = ngx_cpymem(p, r->headers_out.content_type.data,
r->headers_out.content_type.len);
if (r->headers_out.content_type_len == r->headers_out.content_type.len
&& r->headers_out.charset.len)
{
last = ngx_cpymem(last, "; charset=", sizeof("; charset=") - 1);
last = ngx_cpymem(last, r->headers_out.charset.data,
r->headers_out.charset.len);
/* update r->headers_out.content_type for possible logging */
r->headers_out.content_type.len = last - p;
r->headers_out.content_type.data = p;
}
(void) ngx_http_spdy_nv_write_vlen(p - NGX_SPDY_NV_VLEN_SIZE,
r->headers_out.content_type.len);
count++;
}
if (r->headers_out.content_length == NULL
&& r->headers_out.content_length_n >= 0)
{
last = ngx_http_spdy_nv_write_name(last, "content-length");
p = last + NGX_SPDY_NV_VLEN_SIZE;
last = ngx_sprintf(p, "%O", r->headers_out.content_length_n);
(void) ngx_http_spdy_nv_write_vlen(p - NGX_SPDY_NV_VLEN_SIZE,
last - p);
count++;
}
if (r->headers_out.last_modified == NULL
&& r->headers_out.last_modified_time != -1)
{
last = ngx_http_spdy_nv_write_name(last, "last-modified");
p = last + NGX_SPDY_NV_VLEN_SIZE;
last = ngx_http_time(p, r->headers_out.last_modified_time);
(void) ngx_http_spdy_nv_write_vlen(p - NGX_SPDY_NV_VLEN_SIZE,
last - p);
count++;
}
if (host.data) {
last = ngx_http_spdy_nv_write_name(last, "location");
p = last + NGX_SPDY_NV_VLEN_SIZE;
last = ngx_cpymem(p, "http", sizeof("http") - 1);
#if (NGX_HTTP_SSL)
if (c->ssl) {
*last++ ='s';
}
#endif
*last++ = ':'; *last++ = '/'; *last++ = '/';
last = ngx_cpymem(last, host.data, host.len);
if (port) {
last = ngx_sprintf(last, ":%ui", port);
}
last = ngx_cpymem(last, r->headers_out.location->value.data,
r->headers_out.location->value.len);
/* update r->headers_out.location->value for possible logging */
r->headers_out.location->value.len = last - p;
r->headers_out.location->value.data = p;
ngx_str_set(&r->headers_out.location->key, "location");
(void) ngx_http_spdy_nv_write_vlen(p - NGX_SPDY_NV_VLEN_SIZE,
r->headers_out.location->value.len);
count++;
}
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"spdy serverpush module header filter 4");
part = &r->headers_out.headers.part;
header = part->elts;
for (i = 0; /* void */; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
header = part->elts;
i = 0;
}
if (header[i].hash == 0 || header[i].hash == 2) {
continue;
}
if ((header[i].key.len == 6
&& ngx_strncasecmp(header[i].key.data,
(u_char *) "status", 6) == 0)
|| (header[i].key.len == 7
&& ngx_strncasecmp(header[i].key.data,
(u_char *) "version", 7) == 0))
{
header[i].hash = 0;
continue;
}
last = ngx_http_spdy_nv_write_nlen(last, header[i].key.len);
ngx_strlow(last, header[i].key.data, header[i].key.len);
last += header[i].key.len;
p = last + NGX_SPDY_NV_VLEN_SIZE;
last = ngx_cpymem(p, header[i].value.data, header[i].value.len);
pt = part;
h = header;
for (j = i + 1; /* void */; j++) {
if (j >= pt->nelts) {
if (pt->next == NULL) {
break;
}
pt = pt->next;
h = pt->elts;
j = 0;
}
if (h[j].hash == 0 || h[j].hash == 2
|| h[j].key.len != header[i].key.len
|| ngx_strncasecmp(header[i].key.data, h[j].key.data,
header[i].key.len))
{
continue;
}
*last++ = '\0';
last = ngx_cpymem(last, h[j].value.data, h[j].value.len);
h[j].hash = 2;
}
(void) ngx_http_spdy_nv_write_vlen(p - NGX_SPDY_NV_VLEN_SIZE,
last - p);
count++;
}
(void) ngx_spdy_frame_write_uint16(buf, count);
stream = r->spdy_stream;
sc = stream->connection;
if(isSet)
{
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"spdy serverpush module header filter 5");
//ngx_http_spdy_stream_t *myStream;
myStream = ngx_http_spdy_create_stream(sc, get_next_even_stream_id(), 0);
len = last - buf;
b = ngx_create_temp_buf(r->pool, NGX_SPDY_FRAME_HEADER_SIZE
+ NGX_SPDY_SYN_STREAM_SIZE
+ deflateBound(&sc->zstream_out, len));
if (b == NULL) {
ngx_free(buf);
return NGX_ERROR;
}
b->last += NGX_SPDY_FRAME_HEADER_SIZE + NGX_SPDY_SYN_STREAM_SIZE;
sc->zstream_out.next_in = buf;
sc->zstream_out.avail_in = len;
sc->zstream_out.next_out = b->last;
sc->zstream_out.avail_out = b->end - b->last;
rc = deflate(&sc->zstream_out, Z_SYNC_FLUSH);
ngx_free(buf);
if (rc != Z_OK) {
ngx_log_error(NGX_LOG_ALERT, c->log, 0,
"spdy deflate() failed: %d", rc);
return NGX_ERROR;
}
ngx_log_debug5(NGX_LOG_DEBUG_HTTP, c->log, 0,
"spdy deflate out: ni:%p no:%p ai:%ud ao:%ud rc:%d",
sc->zstream_out.next_in, sc->zstream_out.next_out,
sc->zstream_out.avail_in, sc->zstream_out.avail_out,
rc);
b->last = sc->zstream_out.next_out;
p = b->pos;
p = ngx_spdy_frame_write_head(p, NGX_SPDY_SYN_STREAM);
len = b->last - b->pos;
r->header_size = len;
if (r->header_only) {
b->last_buf = 1;
p = ngx_spdy_frame_write_flags_and_len(p, NGX_SPDY_FLAG_FIN,
len - NGX_SPDY_FRAME_HEADER_SIZE);
} else {
p = ngx_spdy_frame_write_flags_and_len(p, NGX_SPDY_FLAG_UNIDIRECTIONAL,
len - NGX_SPDY_FRAME_HEADER_SIZE);
}
p= ngx_spdy_frame_write_sid(p, myStream->id);
(void) ngx_spdy_frame_write_associated_sid(p, stream->id);
cl = ngx_alloc_chain_link(r->pool);
if (cl == NULL) {
return NGX_ERROR;
}
cl->buf = b;
cl->next = NULL;
frame = ngx_palloc(r->pool, sizeof(ngx_http_spdy_out_frame_t));
if (frame == NULL) {
return NGX_ERROR;
}
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"spdy serverpush module header filter 6");
frame->first = cl;
frame->last = cl;
frame->handler = ngx_http_spdy_syn_frame_handler;
frame->free = NULL;
frame->stream = myStream;
frame->size = len;
frame->priority = myStream->priority;
frame->blocked = 1;
frame->fin = r->header_only;
ngx_log_debug3(NGX_LOG_DEBUG_HTTP, stream->request->connection->log, 0,
"spdy:%ui create JOLLY SYN_STREAM frame %p: size:%uz",
myStream->id, frame, frame->size);
ngx_http_spdy_queue_blocked_frame(sc, frame);
r->blocked++;
cln = ngx_http_cleanup_add(r, 0);
if (cln == NULL) {
return NGX_ERROR;
}
cln->handler = ngx_http_spdy_filter_cleanup;
cln->data = myStream;
myStream->waiting = 1;
ngx_http_spdy_serverpush_filter_send(c, myStream);
return ngx_http_next_header_filter(r);
}
else
{
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"spdy serverpush module header filter 7");
return NGX_OK;
}
}
static ngx_http_spdy_out_frame_t *
ngx_http_spdy_filter_get_data_frame(ngx_http_spdy_stream_t *stream,
size_t len, ngx_uint_t fin, ngx_chain_t *first, ngx_chain_t *last)
{
u_char *p;
ngx_buf_t *buf;
ngx_uint_t flags;
ngx_chain_t *cl;
ngx_http_spdy_out_frame_t *frame;
frame = stream->free_frames;
if (frame) {
stream->free_frames = frame->free;
} else {
frame = ngx_palloc(stream->request->pool,
sizeof(ngx_http_spdy_out_frame_t));
if (frame == NULL) {
return NULL;
}
}
ngx_log_debug4(NGX_LOG_DEBUG_HTTP, stream->request->connection->log, 0,
"Blaha spdy:%ui create DATA frame %p: len:%uz fin:%ui",
stream->id, frame, len, fin);
if (len || fin) {
flags = fin ? NGX_SPDY_FLAG_FIN : 0;
cl = ngx_chain_get_free_buf(stream->request->pool,
&stream->free_data_headers);
if (cl == NULL) {
return NULL;
}
buf = cl->buf;
if (buf->start) {
p = buf->start;
buf->pos = p;
p += sizeof(uint32_t);
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, stream->request->connection->log, 0,
"sai ram IFF:%ui DATA frame",
stream->id);
(void) ngx_spdy_frame_write_flags_and_len(p, flags, len);
} else {
p = ngx_palloc(stream->request->pool, NGX_SPDY_FRAME_HEADER_SIZE);
if (p == NULL) {
return NULL;
}
buf->pos = p;
buf->start = p;
p = ngx_spdy_frame_write_sid(p, stream->id);
p = ngx_spdy_frame_write_flags_and_len(p, flags, len);
buf->last = p;
buf->end = p;
buf->tag = (ngx_buf_tag_t) &ngx_http_spdy_serverpush_filter_module;
buf->memory = 1;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, stream->request->connection->log, 0,
"sai ram ELSEE:%ui DATA frame",
stream->id);
if(buf->pos == buf->last)
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, stream->request->connection->log, 0,
"EQUAL !!!!!!");
}
cl->next = first;
first = cl;
}
frame->first = first;
frame->last = last;
frame->handler = ngx_http_spdy_data_frame_handler;
frame->free = NULL;
frame->stream = stream;
frame->size = NGX_SPDY_FRAME_HEADER_SIZE + len;
frame->priority = stream->priority;
frame->blocked = 0;
frame->fin = fin;
//ngx_chain_t *cl1;
//cl = frame->first;
//frame->first->buf->pos = frame->first->buf->last;
if (frame->first->buf->pos != frame->first->buf->last)
{
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, stream->request->connection->log, 0,
"sai ram spdy:%ui DATA frame",
stream->id);
}
return frame;
}
static ngx_http_spdy_out_frame_t *
ngx_http_spdy_filter_get_data_frame(ngx_http_spdy_stream_t *stream,
size_t len, ngx_chain_t *first, ngx_chain_t *last)
{
u_char *p;
ngx_buf_t *buf;
ngx_uint_t flags;
ngx_chain_t *cl;
ngx_http_spdy_out_frame_t *frame;
frame = stream->free_frames;
if (frame)
{
stream->free_frames = frame->next;
}
else
{
frame = ngx_palloc(stream->request->pool,
sizeof(ngx_http_spdy_out_frame_t));
if (frame == NULL)
{
return NULL;
}
}
flags = last->buf->last_buf ? NGX_SPDY_FLAG_FIN : 0;
ngx_log_debug4(NGX_LOG_DEBUG_HTTP, stream->request->connection->log, 0,
"spdy:%ui create DATA frame %p: len:%uz flags:%ui",
stream->id, frame, len, flags);
cl = ngx_chain_get_free_buf(stream->request->pool,
&stream->free_data_headers);
if (cl == NULL)
{
return NULL;
}
buf = cl->buf;
if (buf->start)
{
p = buf->start;
buf->pos = p;
p += NGX_SPDY_SID_SIZE;
(void) ngx_spdy_frame_write_flags_and_len(p, flags, len);
}
else
{
p = ngx_palloc(stream->request->pool, NGX_SPDY_FRAME_HEADER_SIZE);
if (p == NULL)
{
return NULL;
}
buf->pos = p;
buf->start = p;
p = ngx_spdy_frame_write_sid(p, stream->id);
p = ngx_spdy_frame_write_flags_and_len(p, flags, len);
buf->last = p;
buf->end = p;
buf->tag = (ngx_buf_tag_t) &ngx_http_spdy_filter_get_data_frame;
buf->memory = 1;
}
cl->next = first;
first = cl;
last->buf->flush = 1;
frame->first = first;
frame->last = last;
frame->handler = ngx_http_spdy_data_frame_handler;
frame->stream = stream;
frame->length = len;
frame->priority = stream->priority;
frame->blocked = 0;
frame->fin = last->buf->last_buf;
return frame;
}
