GCOV - Varnish Cache


/*-
 * Copyright (c) 2006 Verdens Gang AS
 * Copyright (c) 2006-2015 Varnish Software AS
 * All rights reserved.
 *
 * Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * This file contains the two central state machine for pushing HTTP1
 * sessions through their states.
 *
 */

#include "config.h"

#include <stdio.h>
#include <stdlib.h>

#include "cache/cache_varnishd.h"
#include "cache/cache_objhead.h"
#include "cache/cache_transport.h"
#include "cache_http1.h"

#include "vtcp.h"

static const char H1NEWREQ[] = "HTTP1::NewReq";
static const char H1PROC[] = "HTTP1::Proc";
static const char H1CLEANUP[] = "HTTP1::Cleanup";

static void HTTP1_Session(struct worker *, struct req *);

static void
http1_setstate(const struct sess *sp, const char *s)
{
        uintptr_t p;

        p = (uintptr_t)s;
        AZ(SES_Set_proto_priv(sp, &p));
}

static const char *
http1_getstate(const struct sess *sp)
{
        uintptr_t *p;

        AZ(SES_Get_proto_priv(sp, &p));
        return ((const char *)*p);
}

/*--------------------------------------------------------------------
 * Call protocol for this request
 */

static void v_matchproto_(task_func_t)
http1_req(struct worker *wrk, void *arg)
{
        struct req *req;

        CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
        CAST_OBJ_NOTNULL(req, arg, REQ_MAGIC);

        THR_SetRequest(req);
        req->transport = &HTTP1_transport;
        assert(!WS_IsReserved(wrk->aws));
        HTTP1_Session(wrk, req);
        AZ(wrk->v1l);
        WS_Assert(wrk->aws);
        THR_SetRequest(NULL);
}

/*--------------------------------------------------------------------
 * Call protocol for this session (new or from waiter)
 *
 * When sessions are rescheduled from the waiter, a struct pool_task
 * is put on the reserved session workspace (for reasons of memory
 * conservation).  This reservation is released as the first thing.
 * The acceptor and any other code which schedules this function
 * must obey this calling convention with a dummy reservation.
 */

static void v_matchproto_(task_func_t)
http1_new_session(struct worker *wrk, void *arg)
{
        struct sess *sp;
        struct req *req;
        uintptr_t *u;
        ssize_t sz;

        CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
        CAST_OBJ_NOTNULL(req, arg, REQ_MAGIC);
        sp = req->sp;
        CHECK_OBJ_NOTNULL(sp, SESS_MAGIC);

        HTC_RxInit(req->htc, req->ws);
        if (!SES_Reserve_proto_priv(sp, &u, &sz)) {
                /* Out of session workspace. Free the req, close the sess,
                 * and do not set a new task func, which will exit the
                 * worker thread. */
                VSL(SLT_Error, req->sp->vxid,
                    "insufficient workspace (proto_priv)");
                WS_Release(req->ws, 0);
                Req_Release(req);
                SES_Delete(sp, SC_RX_JUNK, NAN);
                return;
        }
        assert(sz == sizeof u);
        http1_setstate(sp, H1NEWREQ);
        wrk->task->func = http1_req;
        wrk->task->priv = req;
}

static void v_matchproto_(task_func_t)
http1_unwait(struct worker *wrk, void *arg)
{
        struct sess *sp;
        struct req *req;

        CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
        CAST_OBJ_NOTNULL(sp, arg, SESS_MAGIC);
        WS_Release(sp->ws, 0);
        req = Req_New(sp);
        CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
        req->htc->rfd = &sp->fd;
        HTC_RxInit(req->htc, req->ws);
        http1_setstate(sp, H1NEWREQ);
        wrk->task->func = http1_req;
        wrk->task->priv = req;
}

static void v_matchproto_(vtr_req_body_t)
http1_req_body(struct req *req)
{

        CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
        if (V1F_Setup_Fetch(req->vfc, req->htc) != 0)
                req->req_body_status = BS_ERROR;
}

static void
http1_sess_panic(struct vsb *vsb, const struct sess *sp)
{

        VSB_printf(vsb, "state = %s\n", http1_getstate(sp));
}

static void
http1_req_panic(struct vsb *vsb, const struct req *req)
{

        VSB_printf(vsb, "state = %s\n", http1_getstate(req->sp));
}

static void v_matchproto_(vtr_req_fail_f)
http1_req_fail(struct req *req, stream_close_t reason)
{
        assert(reason != SC_NULL);
        assert(req->sp->fd != 0);
        if (req->sp->fd > 0)
                SES_Close(req->sp, reason);
}

static int v_matchproto_(vtr_minimal_response_f)
http1_minimal_response(struct req *req, uint16_t status)
{
        ssize_t wl, l;
        char buf[80];
        const char *reason;

        assert(status >= 100);
        assert(status < 1000);

        reason = http_Status2Reason(status, NULL);

        bprintf(buf, "HTTP/1.1 %03d %s\r\n\r\n", status, reason);
        l = strlen(buf);

        VSLb(req->vsl, SLT_RespProtocol, "HTTP/1.1");
        VSLb(req->vsl, SLT_RespStatus, "%03d", status);
        VSLbs(req->vsl, SLT_RespReason, TOSTRAND(reason));

        if (status >= 400)
                req->err_code = status;
        wl = write(req->sp->fd, buf, l);

        if (wl > 0)
                req->acct.resp_hdrbytes += wl;
        if (wl != l) {
                if (wl < 0)
                        VTCP_Assert(1);
                if (req->doclose == SC_NULL)
                        req->doclose = SC_REM_CLOSE;
                return (-1);
        }
        return (0);
}

struct transport HTTP1_transport = {
        .name =                 "HTTP/1",
        .proto_ident =          "HTTP",
        .magic =                TRANSPORT_MAGIC,
        .deliver =              V1D_Deliver,
        .minimal_response =     http1_minimal_response,
        .new_session =          http1_new_session,
        .req_body =             http1_req_body,
        .req_fail =             http1_req_fail,
        .req_panic =            http1_req_panic,
        .sess_panic =           http1_sess_panic,
        .unwait =               http1_unwait,
};

/*----------------------------------------------------------------------
 */

static inline void
http1_abort(struct req *req, uint16_t status)
{
        assert(req->doclose != SC_NULL);
        assert(status >= 400);
        (void)http1_minimal_response(req, status);
}

static int
http1_dissect(struct worker *wrk, struct req *req)
{

        CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
        CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
        CHECK_OBJ_NOTNULL(req->transport, TRANSPORT_MAGIC);

        /* Allocate a new vxid now that we know we'll need it. */
        assert(IS_NO_VXID(req->vsl->wid));
        req->vsl->wid = VXID_Get(wrk, VSL_CLIENTMARKER);

        VSLb(req->vsl, SLT_Begin, "req %ju rxreq", VXID(req->sp->vxid));
        VSL(SLT_Link, req->sp->vxid, "req %ju rxreq", VXID(req->vsl->wid));
        AZ(isnan(req->t_first)); /* First byte timestamp set by http1_wait */
        AZ(isnan(req->t_req));   /* Complete req rcvd set by http1_wait */
        req->t_prev = req->t_first;
        VSLb_ts_req(req, "Start", req->t_first);
        VSLb_ts_req(req, "Req", req->t_req);

        HTTP_Setup(req->http, req->ws, req->vsl, SLT_ReqMethod);
        req->err_code = HTTP1_DissectRequest(req->htc, req->http);

        /* If we could not even parse the request, just close */
        if (req->err_code != 0) {
                VSLb(req->vsl, SLT_HttpGarbage, "%.*s",
                    (int)(req->htc->rxbuf_e - req->htc->rxbuf_b),
                    req->htc->rxbuf_b);
                wrk->stats->client_req_400++;

                (void)Req_LogStart(wrk, req);

                req->doclose = SC_RX_JUNK;
                http1_abort(req, 400);
                return (-1);
        }

        AZ(req->req_body_status);
        req->req_body_status = req->htc->body_status;
        return (0);
}

/*----------------------------------------------------------------------
 */

static void
HTTP1_Session(struct worker *wrk, struct req *req)
{
        enum htc_status_e hs;
        struct sess *sp;
        const char *st;
        int i;

        CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
        CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
        sp = req->sp;
        CHECK_OBJ_NOTNULL(sp, SESS_MAGIC);

        /*
         * Whenever we come in from the acceptor or waiter, we need to set
         * blocking mode.  It would be simpler to do this in the acceptor
         * or waiter, but we'd rather do the syscall in the worker thread.
         */
        if (http1_getstate(sp) == H1NEWREQ)
                VTCP_blocking(sp->fd);

        req->transport = &HTTP1_transport;

        while (1) {
                st = http1_getstate(sp);
                if (st == H1NEWREQ) {
                        CHECK_OBJ_NOTNULL(req->transport, TRANSPORT_MAGIC);
                        assert(isnan(req->t_prev));
                        assert(isnan(req->t_req));
                        AZ(req->vcl);
                        AZ(req->esi_level);
                        AN(WS_Reservation(req->htc->ws));

                        hs = HTC_RxStuff(req->htc, HTTP1_Complete,
                            &req->t_first, &req->t_req,
                            sp->t_idle + SESS_TMO(sp, timeout_linger),
                            sp->t_idle + SESS_TMO(sp, timeout_idle),
                            NAN,
                            cache_param->http_req_size);
                        assert(!WS_IsReserved(req->htc->ws));
                        if (hs < HTC_S_EMPTY) {
                                req->acct.req_hdrbytes +=
                                    req->htc->rxbuf_e - req->htc->rxbuf_b;
                                Req_AcctLogCharge(wrk->stats, req);
                                Req_Release(req);
                                SES_DeleteHS(sp, hs, NAN);
                                return;
                        }
                        if (hs == HTC_S_IDLE) {
                                wrk->stats->sess_herd++;
                                Req_Release(req);
                                SES_Wait(sp, &HTTP1_transport);
                                return;
                        }
                        if (hs != HTC_S_COMPLETE)
                                WRONG("htc_status (nonbad)");

                        if (H2_prism_complete(req->htc) == HTC_S_COMPLETE) {
                                if (!FEATURE(FEATURE_HTTP2)) {
                                        SES_Close(req->sp, SC_REQ_HTTP20);
                                        assert(!WS_IsReserved(req->ws));
                                        assert(!WS_IsReserved(wrk->aws));
                                        http1_setstate(sp, H1CLEANUP);
                                        continue;
                                }
                                http1_setstate(sp, NULL);
                                H2_PU_Sess(wrk, sp, req);
                                return;
                        }

                        i = http1_dissect(wrk, req);
                        req->acct.req_hdrbytes +=
                            req->htc->rxbuf_e - req->htc->rxbuf_b;
                        if (i) {
                                assert(req->doclose != SC_NULL);
                                SES_Close(req->sp, req->doclose);
                                assert(!WS_IsReserved(req->ws));
                                assert(!WS_IsReserved(wrk->aws));
                                http1_setstate(sp, H1CLEANUP);
                                continue;
                        }
                        if (http_HdrIs(req->http, H_Upgrade, "h2c")) {
                                if (!FEATURE(FEATURE_HTTP2)) {
                                        VSLb(req->vsl, SLT_Debug,
                                            "H2 upgrade attempt");
                                } else if (req->htc->body_status != BS_NONE) {
                                        VSLb(req->vsl, SLT_Debug,
                                            "H2 upgrade attempt has body");
                                } else {
                                        http1_setstate(sp, NULL);
                                        req->err_code = 2;
                                        H2_OU_Sess(wrk, sp, req);
                                        return;
                                }
                        }
                        assert(req->req_step == R_STP_TRANSPORT);
                        VCL_TaskEnter(req->privs);
                        VCL_TaskEnter(req->top->privs);
                        http1_setstate(sp, H1PROC);
                } else if (st == H1PROC) {
                        req->task->func = http1_req;
                        req->task->priv = req;
                        CNT_Embark(wrk, req);
                        if (CNT_Request(req) == REQ_FSM_DISEMBARK)
                                return;
                        wrk->stats->client_req++;
                        AZ(req->top->vcl0);
                        req->task->func = NULL;
                        req->task->priv = NULL;
                        assert(!WS_IsReserved(req->ws));
                        assert(!WS_IsReserved(wrk->aws));
                        http1_setstate(sp, H1CLEANUP);
                } else if (st == H1CLEANUP) {

                        assert(!WS_IsReserved(wrk->aws));
                        assert(!WS_IsReserved(req->ws));

                        if (sp->fd >= 0 && req->doclose != SC_NULL)
                                SES_Close(sp, req->doclose);

                        if (sp->fd < 0) {
                                wrk->stats->sess_closed++;
                                Req_Cleanup(sp, wrk, req);
                                Req_Release(req);
                                SES_Delete(sp, SC_NULL, NAN);
                                return;
                        }

                        Req_Cleanup(sp, wrk, req);
                        HTC_RxInit(req->htc, req->ws);
                        if (req->htc->rxbuf_e != req->htc->rxbuf_b)
                                wrk->stats->sess_readahead++;
                        if (FEATURE(FEATURE_BUSY_STATS_RATE))
                                WRK_AddStat(wrk);
                        http1_setstate(sp, H1NEWREQ);
                } else {
                        WRONG("Wrong H1 session state");
                }
        }
}

		varnish-cache/bin/varnishd/http1/cache_http1_fsm.c
0		/*-
1		* Copyright (c) 2006 Verdens Gang AS
2		* Copyright (c) 2006-2015 Varnish Software AS
3		* All rights reserved.
4		*
5		* Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
6		*
7		* SPDX-License-Identifier: BSD-2-Clause
8		*
9		* Redistribution and use in source and binary forms, with or without
10		* modification, are permitted provided that the following conditions
11		* are met:
12		* 1. Redistributions of source code must retain the above copyright
13		* notice, this list of conditions and the following disclaimer.
14		* 2. Redistributions in binary form must reproduce the above copyright
15		* notice, this list of conditions and the following disclaimer in the
16		* documentation and/or other materials provided with the distribution.
17		*
18		* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19		* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20		* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21		* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
22		* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23		* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24		* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26		* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27		* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28		* SUCH DAMAGE.
29		*
30		* This file contains the two central state machine for pushing HTTP1
31		* sessions through their states.
32		*
33		*/
34
35		#include "config.h"
36
37		#include <stdio.h>
38		#include <stdlib.h>
39
40		#include "cache/cache_varnishd.h"
41		#include "cache/cache_objhead.h"
42		#include "cache/cache_transport.h"
43		#include "cache_http1.h"
44
45		#include "vtcp.h"
46
47		static const char H1NEWREQ[] = "HTTP1::NewReq";
48		static const char H1PROC[] = "HTTP1::Proc";
49		static const char H1CLEANUP[] = "HTTP1::Cleanup";
50
51		static void HTTP1_Session(struct worker , struct req );
52
53		static void
54	269050	http1_setstate(const struct sess sp, const char s)
55		{
56		uintptr_t p;
57
58	269050	p = (uintptr_t)s;
59	269050	AZ(SES_Set_proto_priv(sp, &p));
60	269050	}
61
62		static const char *
63	320618	http1_getstate(const struct sess *sp)
64		{
65		uintptr_t *p;
66
67	320618	AZ(SES_Get_proto_priv(sp, &p));
68	320618	return ((const char )p);
69		}
70
71		/*--------------------------------------------------------------------
72		* Call protocol for this request
73		*/
74
75		static void v_matchproto_(task_func_t)
76	53826	http1_req(struct worker wrk, void arg)
77		{
78		struct req *req;
79
80	53826	CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
81	53826	CAST_OBJ_NOTNULL(req, arg, REQ_MAGIC);
82
83	53826	THR_SetRequest(req);
84	53826	req->transport = &HTTP1_transport;
85	53826	assert(!WS_IsReserved(wrk->aws));
86	53826	HTTP1_Session(wrk, req);
87	53826	AZ(wrk->v1l);
88	53826	WS_Assert(wrk->aws);
89	53826	THR_SetRequest(NULL);
90	53826	}
91
92		/*--------------------------------------------------------------------
93		* Call protocol for this session (new or from waiter)
94		*
95		* When sessions are rescheduled from the waiter, a struct pool_task
96		* is put on the reserved session workspace (for reasons of memory
97		* conservation). This reservation is released as the first thing.
98		* The acceptor and any other code which schedules this function
99		* must obey this calling convention with a dummy reservation.
100		*/
101
102		static void v_matchproto_(task_func_t)
103	49762	http1_new_session(struct worker wrk, void arg)
104		{
105		struct sess *sp;
106		struct req *req;
107		uintptr_t *u;
108		ssize_t sz;
109
110	49762	CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
111	49762	CAST_OBJ_NOTNULL(req, arg, REQ_MAGIC);
112	49762	sp = req->sp;
113	49762	CHECK_OBJ_NOTNULL(sp, SESS_MAGIC);
114
115	49762	HTC_RxInit(req->htc, req->ws);
116	49762	if (!SES_Reserve_proto_priv(sp, &u, &sz)) {
117		/* Out of session workspace. Free the req, close the sess,
118		* and do not set a new task func, which will exit the
119		* worker thread. */
120	25	VSL(SLT_Error, req->sp->vxid,
121		"insufficient workspace (proto_priv)");
122	25	WS_Release(req->ws, 0);
123	25	Req_Release(req);
124	25	SES_Delete(sp, SC_RX_JUNK, NAN);
125	25	return;
126		}
127	49737	assert(sz == sizeof u);
128	49737	http1_setstate(sp, H1NEWREQ);
129	49737	wrk->task->func = http1_req;
130	49737	wrk->task->priv = req;
131	49762	}
132
133		static void v_matchproto_(task_func_t)
134	3376	http1_unwait(struct worker wrk, void arg)
135		{
136		struct sess *sp;
137		struct req *req;
138
139	3376	CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
140	3376	CAST_OBJ_NOTNULL(sp, arg, SESS_MAGIC);
141	3376	WS_Release(sp->ws, 0);
142	3376	req = Req_New(sp);
143	3376	CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
144	3376	req->htc->rfd = &sp->fd;
145	3376	HTC_RxInit(req->htc, req->ws);
146	3376	http1_setstate(sp, H1NEWREQ);
147	3376	wrk->task->func = http1_req;
148	3376	wrk->task->priv = req;
149	3376	}
150
151		static void v_matchproto_(vtr_req_body_t)
152	1700	http1_req_body(struct req *req)
153		{
154
155	1700	CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
156	1700	if (V1F_Setup_Fetch(req->vfc, req->htc) != 0)
157	0	req->req_body_status = BS_ERROR;
158	1700	}
159
160		static void
161	125	http1_sess_panic(struct vsb vsb, const struct sess sp)
162		{
163
164	125	VSB_printf(vsb, "state = %s\n", http1_getstate(sp));
165	125	}
166
167		static void
168	100	http1_req_panic(struct vsb vsb, const struct req req)
169		{
170
171	100	VSB_printf(vsb, "state = %s\n", http1_getstate(req->sp));
172	100	}
173
174		static void v_matchproto_(vtr_req_fail_f)
175	700	http1_req_fail(struct req *req, stream_close_t reason)
176		{
177	700	assert(reason != SC_NULL);
178	700	assert(req->sp->fd != 0);
179	700	if (req->sp->fd > 0)
180	700	SES_Close(req->sp, reason);
181	700	}
182
183		static int v_matchproto_(vtr_minimal_response_f)
184	1200	http1_minimal_response(struct req *req, uint16_t status)
185		{
186		ssize_t wl, l;
187		char buf[80];
188		const char *reason;
189
190	1200	assert(status >= 100);
191	1200	assert(status < 1000);
192
193	1200	reason = http_Status2Reason(status, NULL);
194
195	1200	bprintf(buf, "HTTP/1.1 %03d %s\r\n\r\n", status, reason);
196	1200	l = strlen(buf);
197
198	1200	VSLb(req->vsl, SLT_RespProtocol, "HTTP/1.1");
199	1200	VSLb(req->vsl, SLT_RespStatus, "%03d", status);
200	1200	VSLbs(req->vsl, SLT_RespReason, TOSTRAND(reason));
201
202	1200	if (status >= 400)
203	1075	req->err_code = status;
204	1200	wl = write(req->sp->fd, buf, l);
205
206	1200	if (wl > 0)
207	1200	req->acct.resp_hdrbytes += wl;
208	1200	if (wl != l) {
209	0	if (wl < 0)
210	0	VTCP_Assert(1);
211	0	if (req->doclose == SC_NULL)
212	0	req->doclose = SC_REM_CLOSE;
213	0	return (-1);
214		}
215	1200	return (0);
216	1200	}
217
218		struct transport HTTP1_transport = {
219		.name = "HTTP/1",
220		.proto_ident = "HTTP",
221		.magic = TRANSPORT_MAGIC,
222		.deliver = V1D_Deliver,
223		.minimal_response = http1_minimal_response,
224		.new_session = http1_new_session,
225		.req_body = http1_req_body,
226		.req_fail = http1_req_fail,
227		.req_panic = http1_req_panic,
228		.sess_panic = http1_sess_panic,
229		.unwait = http1_unwait,
230		};
231
232		/*----------------------------------------------------------------------
233		*/
234
235		static inline void
236	825	http1_abort(struct req *req, uint16_t status)
237		{
238	825	assert(req->doclose != SC_NULL);
239	825	assert(status >= 400);
240	825	(void)http1_minimal_response(req, status);
241	825	}
242
243		static int
244	75055	http1_dissect(struct worker wrk, struct req req)
245		{
246
247	75055	CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
248	75055	CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
249	75055	CHECK_OBJ_NOTNULL(req->transport, TRANSPORT_MAGIC);
250
251		/* Allocate a new vxid now that we know we'll need it. */
252	75055	assert(IS_NO_VXID(req->vsl->wid));
253	75055	req->vsl->wid = VXID_Get(wrk, VSL_CLIENTMARKER);
254
255	75055	VSLb(req->vsl, SLT_Begin, "req %ju rxreq", VXID(req->sp->vxid));
256	75055	VSL(SLT_Link, req->sp->vxid, "req %ju rxreq", VXID(req->vsl->wid));
257	75055	AZ(isnan(req->t_first)); /* First byte timestamp set by http1_wait */
258	75055	AZ(isnan(req->t_req)); /* Complete req rcvd set by http1_wait */
259	75055	req->t_prev = req->t_first;
260	75055	VSLb_ts_req(req, "Start", req->t_first);
261	75055	VSLb_ts_req(req, "Req", req->t_req);
262
263	75055	HTTP_Setup(req->http, req->ws, req->vsl, SLT_ReqMethod);
264	75055	req->err_code = HTTP1_DissectRequest(req->htc, req->http);
265
266		/* If we could not even parse the request, just close */
267	75055	if (req->err_code != 0) {
268	1650	VSLb(req->vsl, SLT_HttpGarbage, "%.*s",
269	825	(int)(req->htc->rxbuf_e - req->htc->rxbuf_b),
270	825	req->htc->rxbuf_b);
271	825	wrk->stats->client_req_400++;
272
273	825	(void)Req_LogStart(wrk, req);
274
275	825	req->doclose = SC_RX_JUNK;
276	825	http1_abort(req, 400);
277	825	return (-1);
278		}
279
280	74230	AZ(req->req_body_status);
281	74230	req->req_body_status = req->htc->body_status;
282	74230	return (0);
283	75055	}
284
285		/*----------------------------------------------------------------------
286		*/
287
288		static void
289	53814	HTTP1_Session(struct worker wrk, struct req req)
290		{
291		enum htc_status_e hs;
292		struct sess *sp;
293		const char *st;
294		int i;
295
296	53814	CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
297	53814	CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
298	53814	sp = req->sp;
299	53814	CHECK_OBJ_NOTNULL(sp, SESS_MAGIC);
300
301		/*
302		* Whenever we come in from the acceptor or waiter, we need to set
303		* blocking mode. It would be simpler to do this in the acceptor
304		* or waiter, but we'd rather do the syscall in the worker thread.
305		*/
306	53814	if (http1_getstate(sp) == H1NEWREQ)
307	53115	VTCP_blocking(sp->fd);
308
309	53814	req->transport = &HTTP1_transport;
310
311	265460	while (1) {
312	266335	st = http1_getstate(sp);
313	266335	if (st == H1NEWREQ) {
314	116697	CHECK_OBJ_NOTNULL(req->transport, TRANSPORT_MAGIC);
315	116697	assert(isnan(req->t_prev));
316	116697	assert(isnan(req->t_req));
317	116697	AZ(req->vcl);
318	116697	AZ(req->esi_level);
319	116697	AN(WS_Reservation(req->htc->ws));
320
321	233394	hs = HTC_RxStuff(req->htc, HTTP1_Complete,
322	116697	&req->t_first, &req->t_req,
323	116697	sp->t_idle + SESS_TMO(sp, timeout_linger),
324	116697	sp->t_idle + SESS_TMO(sp, timeout_idle),
325		NAN,
326	116697	cache_param->http_req_size);
327	116697	assert(!WS_IsReserved(req->htc->ws));
328	116697	if (hs < HTC_S_EMPTY) {
329	34065	req->acct.req_hdrbytes +=
330	34065	req->htc->rxbuf_e - req->htc->rxbuf_b;
331	34065	Req_AcctLogCharge(wrk->stats, req);
332	34065	Req_Release(req);
333	34065	SES_DeleteHS(sp, hs, NAN);
334	34065	return;
335		}
336	82632	if (hs == HTC_S_IDLE) {
337	4247	wrk->stats->sess_herd++;
338	4247	Req_Release(req);
339	4247	SES_Wait(sp, &HTTP1_transport);
340	4247	return;
341		}
342	78385	if (hs != HTC_S_COMPLETE)
343	0	WRONG("htc_status (nonbad)");
344
345	78385	if (H2_prism_complete(req->htc) == HTC_S_COMPLETE) {
346	3325	if (!FEATURE(FEATURE_HTTP2)) {
347	50	SES_Close(req->sp, SC_REQ_HTTP20);
348	50	assert(!WS_IsReserved(req->ws));
349	50	assert(!WS_IsReserved(wrk->aws));
350	50	http1_setstate(sp, H1CLEANUP);
351	50	continue;
352		}
353	3275	http1_setstate(sp, NULL);
354	3275	H2_PU_Sess(wrk, sp, req);
355	3275	return;
356		}
357
358	75060	i = http1_dissect(wrk, req);
359	75060	req->acct.req_hdrbytes +=
360	75060	req->htc->rxbuf_e - req->htc->rxbuf_b;
361	75060	if (i) {
362	825	assert(req->doclose != SC_NULL);
363	825	SES_Close(req->sp, req->doclose);
364	825	assert(!WS_IsReserved(req->ws));
365	825	assert(!WS_IsReserved(wrk->aws));
366	825	http1_setstate(sp, H1CLEANUP);
367	825	continue;
368		}
369	74235	if (http_HdrIs(req->http, H_Upgrade, "h2c")) {
370	200	if (!FEATURE(FEATURE_HTTP2)) {
371	25	VSLb(req->vsl, SLT_Debug,
372		"H2 upgrade attempt");
373	200	} else if (req->htc->body_status != BS_NONE) {
374	25	VSLb(req->vsl, SLT_Debug,
375		"H2 upgrade attempt has body");
376	25	} else {
377	150	http1_setstate(sp, NULL);
378	150	req->err_code = 2;
379	150	H2_OU_Sess(wrk, sp, req);
380	150	return;
381		}
382	50	}
383	74085	assert(req->req_step == R_STP_TRANSPORT);
384	74085	VCL_TaskEnter(req->privs);
385	74085	VCL_TaskEnter(req->top->privs);
386	74085	http1_setstate(sp, H1PROC);
387	223723	} else if (st == H1PROC) {
388	74798	req->task->func = http1_req;
389	74798	req->task->priv = req;
390	74798	CNT_Embark(wrk, req);
391	74798	if (CNT_Request(req) == REQ_FSM_DISEMBARK)
392	837	return;
393	73961	wrk->stats->client_req++;
394	73961	AZ(req->top->vcl0);
395	73961	req->task->func = NULL;
396	73961	req->task->priv = NULL;
397	73961	assert(!WS_IsReserved(req->ws));
398	73961	assert(!WS_IsReserved(wrk->aws));
399	73961	http1_setstate(sp, H1CLEANUP);
400	148801	} else if (st == H1CLEANUP) {
401
402	74840	assert(!WS_IsReserved(wrk->aws));
403	74840	assert(!WS_IsReserved(req->ws));
404
405	74840	if (sp->fd >= 0 && req->doclose != SC_NULL)
406	9040	SES_Close(sp, req->doclose);
407
408	74840	if (sp->fd < 0) {
409	11240	wrk->stats->sess_closed++;
410	11240	Req_Cleanup(sp, wrk, req);
411	11240	Req_Release(req);
412	11240	SES_Delete(sp, SC_NULL, NAN);
413	11240	return;
414		}
415
416	63600	Req_Cleanup(sp, wrk, req);
417	63600	HTC_RxInit(req->htc, req->ws);
418	63600	if (req->htc->rxbuf_e != req->htc->rxbuf_b)
419	360	wrk->stats->sess_readahead++;
420	63600	if (FEATURE(FEATURE_BUSY_STATS_RATE))
421	0	WRK_AddStat(wrk);
422	63600	http1_setstate(sp, H1NEWREQ);
423	63600	} else {
424	0	WRONG("Wrong H1 session state");
425		}
426		}
427	53814	}