enum htc_status_e
HTTP1_Rx(struct http_conn *htc)
{
int i;
CHECK_OBJ_NOTNULL(htc, HTTP_CONN_MAGIC);
AN(htc->ws->r);
AZ(htc->pipeline.b);
AZ(htc->pipeline.e);
i = (htc->ws->r - htc->rxbuf.e) - 1; /* space for NUL */
if (i <= 0) {
WS_ReleaseP(htc->ws, htc->rxbuf.b);
return (HTTP1_OVERFLOW);
}
i = read(htc->fd, htc->rxbuf.e, i);
if (i <= 0) {
/*
* We wouldn't come here if we had a complete HTTP header
* so consequently an EOF can not be OK
*/
WS_ReleaseP(htc->ws, htc->rxbuf.b);
return (HTTP1_ERROR_EOF);
}
htc->rxbuf.e += i;
*htc->rxbuf.e = '\0';
return (HTTP1_Complete(htc));
}
enum htc_status_e
HTTP1_Reinit(struct http_conn *htc)
{
unsigned l;
CHECK_OBJ_NOTNULL(htc, HTTP_CONN_MAGIC);
(void)WS_Reserve(htc->ws, htc->maxbytes);
htc->rxbuf.b = htc->ws->f;
htc->rxbuf.e = htc->ws->f;
if (htc->pipeline.b != NULL) {
l = Tlen(htc->pipeline);
memmove(htc->rxbuf.b, htc->pipeline.b, l);
htc->rxbuf.e += l;
htc->pipeline.b = NULL;
htc->pipeline.e = NULL;
}
*htc->rxbuf.e = '\0';
return (HTTP1_Complete(htc));
}
enum http1_status_e
HTTP1_Reinit(struct http_conn *htc)
{
ssize_t l;
CHECK_OBJ_NOTNULL(htc, HTTP_CONN_MAGIC);
(void)WS_Reserve(htc->ws, htc->maxbytes);
htc->rxbuf_b = htc->ws->f;
htc->rxbuf_e = htc->ws->f;
if (htc->pipeline_b != NULL) {
l = htc->pipeline_e - htc->pipeline_b;
assert(l > 0);
memmove(htc->rxbuf_b, htc->pipeline_b, l);
htc->rxbuf_e += l;
htc->pipeline_b = NULL;
htc->pipeline_e = NULL;
}
*htc->rxbuf_e = '\0';
return (HTTP1_Complete(htc));
}
int
V1F_FetchRespHdr(struct busyobj *bo)
{
struct http *hp;
enum htc_status_e hs;
int first;
struct http_conn *htc;
CHECK_OBJ_NOTNULL(bo, BUSYOBJ_MAGIC);
CHECK_OBJ_NOTNULL(bo->htc, HTTP_CONN_MAGIC);
CHECK_OBJ_ORNULL(bo->req, REQ_MAGIC);
htc = bo->htc;
VSC_C_main->backend_req++;
/* Receive response */
SES_RxInit(htc, bo->ws, cache_param->http_resp_size,
cache_param->http_resp_hdr_len);
CHECK_OBJ_NOTNULL(htc, HTTP_CONN_MAGIC);
CHECK_OBJ_NOTNULL(bo->htc, HTTP_CONN_MAGIC);
VTCP_set_read_timeout(htc->fd, htc->first_byte_timeout);
first = 1;
do {
hs = SES_Rx(htc, 0);
if (hs == HTC_S_MORE)
hs = HTTP1_Complete(htc);
if (hs == HTC_S_OVERFLOW) {
WS_ReleaseP(htc->ws, htc->rxbuf_b);
bo->acct.beresp_hdrbytes +=
htc->rxbuf_e - htc->rxbuf_b;
VSLb(bo->vsl, SLT_FetchError,
"http %sread error: overflow",
first ? "first " : "");
htc->doclose = SC_RX_OVERFLOW;
return (-1);
}
if (hs == HTC_S_EOF) {
WS_ReleaseP(htc->ws, htc->rxbuf_b);
bo->acct.beresp_hdrbytes +=
htc->rxbuf_e - htc->rxbuf_b;
VSLb(bo->vsl, SLT_FetchError, "http %sread error: EOF",
first ? "first " : "");
htc->doclose = SC_RX_TIMEOUT;
return (first ? 1 : -1);
}
if (first) {
first = 0;
VTCP_set_read_timeout(htc->fd,
htc->between_bytes_timeout);
}
} while (hs != HTC_S_COMPLETE);
bo->acct.beresp_hdrbytes += htc->rxbuf_e - htc->rxbuf_b;
hp = bo->beresp;
if (HTTP1_DissectResponse(hp, htc)) {
VSLb(bo->vsl, SLT_FetchError, "http format error");
htc->doclose = SC_RX_JUNK;
return (-1);
}
htc->doclose = http_DoConnection(hp);
return (0);
}
static enum req_fsm_nxt
http1_wait(struct sess *sp, struct worker *wrk, struct req *req)
{
int j, tmo;
struct pollfd pfd[1];
double now, when;
enum sess_close why = SC_NULL;
enum http1_status_e hs;
CHECK_OBJ_NOTNULL(sp, SESS_MAGIC);
CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
assert(req->sp == sp);
AZ(req->vcl);
AZ(req->esi_level);
AZ(isnan(sp->t_idle));
assert(isnan(req->t_first));
assert(isnan(req->t_prev));
assert(isnan(req->t_req));
tmo = (int)(1e3 * cache_param->timeout_linger);
while (1) {
pfd[0].fd = sp->fd;
pfd[0].events = POLLIN;
pfd[0].revents = 0;
j = poll(pfd, 1, tmo);
assert(j >= 0);
now = VTIM_real();
if (j != 0)
hs = HTTP1_Rx(req->htc);
else
hs = HTTP1_Complete(req->htc);
if (hs == HTTP1_COMPLETE) {
/* Got it, run with it */
if (isnan(req->t_first))
req->t_first = now;
if (isnan(req->t_req))
req->t_req = now;
req->acct.req_hdrbytes += Tlen(req->htc->rxbuf);
return (REQ_FSM_MORE);
} else if (hs == HTTP1_ERROR_EOF) {
why = SC_REM_CLOSE;
break;
} else if (hs == HTTP1_OVERFLOW) {
why = SC_RX_OVERFLOW;
break;
} else if (hs == HTTP1_ALL_WHITESPACE) {
/* Nothing but whitespace */
when = sp->t_idle + cache_param->timeout_idle;
if (when < now) {
why = SC_RX_TIMEOUT;
break;
}
when = sp->t_idle + cache_param->timeout_linger;
tmo = (int)(1e3 * (when - now));
if (when < now || tmo == 0) {
wrk->stats->sess_herd++;
SES_ReleaseReq(req);
WAIT_Enter(sp);
return (REQ_FSM_DONE);
}
} else {
/* Working on it */
if (isnan(req->t_first))
/* Record first byte received time stamp */
req->t_first = now;
when = sp->t_idle + cache_param->timeout_req;
tmo = (int)(1e3 * (when - now));
if (when < now || tmo == 0) {
why = SC_RX_TIMEOUT;
break;
}
}
}
req->acct.req_hdrbytes += Tlen(req->htc->rxbuf);
CNT_AcctLogCharge(wrk->stats, req);
SES_ReleaseReq(req);
assert(why != SC_NULL);
SES_Delete(sp, why, now);
return (REQ_FSM_DONE);
}
