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_int.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);
        assert(!WS_IsReserved(wrk->aws));
        HTTP1_Session(wrk, req);
        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);

        sz = sizeof u;
        if (SES_Get_proto_priv(sp, &u) &&
            !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, NULL);
        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 = vstrlen(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) {
                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 = XPORT_ByNumber(sp->sattr[SA_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) {
                                if (hs == HTC_S_OVERFLOW && cache_param->http_req_overflow_status != 0) {
                                        (void)req->transport->minimal_response(req,
                                            cache_param->http_req_overflow_status);
                                }
                                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_EMPTY) {
                                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;
                        req->htc->rxbuf_b = NULL;
                        req->htc->rxbuf_e = NULL;
                        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");
                }
        }
}

		vinyl-cache/bin/vinyld/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_int.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	272424	http1_setstate(const struct sess sp, const char s)
55		{
56		uintptr_t p;
57
58	272424	p = (uintptr_t)s;
59	272424	AZ(SES_Set_proto_priv(sp, &p));
60	272424	}
61
62		static const char *
63	327035	http1_getstate(const struct sess *sp)
64		{
65		uintptr_t *p;
66
67	327035	AZ(SES_Get_proto_priv(sp, &p));
68	327035	return ((const char )p);
69		}
70
71		/*--------------------------------------------------------------------
72		* Call protocol for this request
73		*/
74
75		static void v_matchproto_(task_func_t)
76	55126	http1_req(struct worker wrk, void arg)
77		{
78		struct req *req;
79
80	55126	CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
81	55126	CAST_OBJ_NOTNULL(req, arg, REQ_MAGIC);
82
83	55126	THR_SetRequest(req);
84	55126	assert(!WS_IsReserved(wrk->aws));
85	55126	HTTP1_Session(wrk, req);
86	55126	WS_Assert(wrk->aws);
87	55126	THR_SetRequest(NULL);
88	55126	}
89
90		/*--------------------------------------------------------------------
91		* Call protocol for this session (new or from waiter)
92		*
93		* When sessions are rescheduled from the waiter, a struct pool_task
94		* is put on the reserved session workspace (for reasons of memory
95		* conservation). This reservation is released as the first thing.
96		* The acceptor and any other code which schedules this function
97		* must obey this calling convention with a dummy reservation.
98		*/
99
100		static void v_matchproto_(task_func_t)
101	48561	http1_new_session(struct worker wrk, void arg)
102		{
103		struct sess *sp;
104		struct req *req;
105		uintptr_t *u;
106		ssize_t sz;
107
108	48561	CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
109	48561	CAST_OBJ_NOTNULL(req, arg, REQ_MAGIC);
110	48561	sp = req->sp;
111	48561	CHECK_OBJ_NOTNULL(sp, SESS_MAGIC);
112
113	48561	HTC_RxInit(req->htc, req->ws);
114
115	48561	sz = sizeof u;
116	48561	if (SES_Get_proto_priv(sp, &u) &&
117	48558	!SES_Reserve_proto_priv(sp, &u, &sz)) {
118		/* Out of session workspace. Free the req, close the sess,
119		* and do not set a new task func, which will exit the
120		* worker thread. */
121	21	VSL(SLT_Error, req->sp->vxid,
122		"insufficient workspace (proto_priv)");
123	21	WS_Release(req->ws, 0);
124	21	Req_Release(req);
125	21	SES_Delete(sp, SC_RX_JUNK, NAN);
126	21	return;
127		}
128	48540	assert(sz == sizeof u);
129	48538	http1_setstate(sp, H1NEWREQ);
130	48538	wrk->task->func = http1_req;
131	48538	wrk->task->priv = req;
132	48559	}
133
134		static void v_matchproto_(task_func_t)
135	4076	http1_unwait(struct worker wrk, void arg)
136		{
137		struct sess *sp;
138		struct req *req;
139
140	4076	CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
141	4076	CAST_OBJ_NOTNULL(sp, arg, SESS_MAGIC);
142	4076	WS_Release(sp->ws, 0);
143	4076	req = Req_New(sp, NULL);
144	4076	CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
145	4076	req->htc->rfd = &sp->fd;
146	4076	HTC_RxInit(req->htc, req->ws);
147	4076	http1_setstate(sp, H1NEWREQ);
148	4076	wrk->task->func = http1_req;
149	4076	wrk->task->priv = req;
150	4076	}
151
152		static void v_matchproto_(vtr_req_body_t)
153	4956	http1_req_body(struct req *req)
154		{
155
156	4956	CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
157	4956	if (V1F_Setup_Fetch(req->vfc, req->htc) != 0)
158	0	req->req_body_status = BS_ERROR;
159	4956	}
160
161		static void
162	126	http1_sess_panic(struct vsb vsb, const struct sess sp)
163		{
164
165	126	VSB_printf(vsb, "state = %s\n", http1_getstate(sp));
166	126	}
167
168		static void
169	105	http1_req_panic(struct vsb vsb, const struct req req)
170		{
171
172	105	VSB_printf(vsb, "state = %s\n", http1_getstate(req->sp));
173	105	}
174
175		static void v_matchproto_(vtr_req_fail_f)
176	630	http1_req_fail(struct req *req, stream_close_t reason)
177		{
178	630	assert(reason != SC_NULL);
179	630	assert(req->sp->fd != 0);
180	630	if (req->sp->fd > 0)
181	630	SES_Close(req->sp, reason);
182	630	}
183
184		static int v_matchproto_(vtr_minimal_response_f)
185	2709	http1_minimal_response(struct req *req, uint16_t status)
186		{
187		ssize_t wl, l;
188		char buf[80];
189		const char *reason;
190
191	2709	assert(status >= 100);
192	2709	assert(status < 1000);
193
194	2709	reason = http_Status2Reason(status, NULL);
195
196	2709	bprintf(buf, "HTTP/1.1 %03d %s\r\n\r\n", status, reason);
197	2709	l = vstrlen(buf);
198
199	2709	VSLb(req->vsl, SLT_RespProtocol, "HTTP/1.1");
200	2709	VSLb(req->vsl, SLT_RespStatus, "%03d", status);
201	2709	VSLbs(req->vsl, SLT_RespReason, TOSTRAND(reason));
202
203	2709	if (status >= 400)
204	2604	req->err_code = status;
205	2709	wl = write(req->sp->fd, buf, l);
206
207	2709	if (wl > 0)
208	2709	req->acct.resp_hdrbytes += wl;
209	2709	if (wl != l) {
210	0	if (wl < 0)
211	0	VTCP_Assert(1);
212	0	if (req->doclose == SC_NULL)
213	0	req->doclose = SC_REM_CLOSE;
214	0	return (-1);
215		}
216	2709	return (0);
217	2709	}
218
219		struct transport HTTP1_transport = {
220		.name = "HTTP/1",
221		.proto_ident = "HTTP",
222		.magic = TRANSPORT_MAGIC,
223		.deliver = V1D_Deliver,
224		.minimal_response = http1_minimal_response,
225		.new_session = http1_new_session,
226		.req_body = http1_req_body,
227		.req_fail = http1_req_fail,
228		.req_panic = http1_req_panic,
229		.sess_panic = http1_sess_panic,
230		.unwait = http1_unwait,
231		};
232
233		/*----------------------------------------------------------------------
234		*/
235
236		static inline void
237	966	http1_abort(struct req *req, uint16_t status)
238		{
239	966	assert(req->doclose != SC_NULL);
240	966	assert(status >= 400);
241	966	(void)http1_minimal_response(req, status);
242	966	}
243
244		static int
245	76521	http1_dissect(struct worker wrk, struct req req)
246		{
247
248	76521	CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
249	76521	CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
250	76521	CHECK_OBJ_NOTNULL(req->transport, TRANSPORT_MAGIC);
251
252		/* Allocate a new vxid now that we know we'll need it. */
253	76521	assert(IS_NO_VXID(req->vsl->wid));
254	76521	req->vsl->wid = VXID_Get(wrk, VSL_CLIENTMARKER);
255
256	76521	VSLb(req->vsl, SLT_Begin, "req %ju rxreq", VXID(req->sp->vxid));
257	76521	VSL(SLT_Link, req->sp->vxid, "req %ju rxreq", VXID(req->vsl->wid));
258	76521	AZ(isnan(req->t_first)); /* First byte timestamp set by http1_wait */
259	76521	AZ(isnan(req->t_req)); /* Complete req rcvd set by http1_wait */
260	76521	req->t_prev = req->t_first;
261	76521	VSLb_ts_req(req, "Start", req->t_first);
262	76521	VSLb_ts_req(req, "Req", req->t_req);
263
264	76521	HTTP_Setup(req->http, req->ws, req->vsl, SLT_ReqMethod);
265	76521	req->err_code = HTTP1_DissectRequest(req->htc, req->http);
266
267		/* If we could not even parse the request, just close */
268	76521	if (req->err_code != 0) {
269	966	wrk->stats->client_req_400++;
270
271	966	(void)Req_LogStart(wrk, req);
272
273	966	req->doclose = SC_RX_JUNK;
274	966	http1_abort(req, 400);
275	966	return (-1);
276		}
277
278	75555	AZ(req->req_body_status);
279	75555	req->req_body_status = req->htc->body_status;
280	75555	return (0);
281	76521	}
282
283		/*----------------------------------------------------------------------
284		*/
285
286		static void
287	54988	HTTP1_Session(struct worker wrk, struct req req)
288		{
289		enum htc_status_e hs;
290		struct sess *sp;
291		const char *st;
292		int i;
293
294	54988	CHECK_OBJ_NOTNULL(wrk, WORKER_MAGIC);
295	54988	CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
296	54988	sp = req->sp;
297	54988	CHECK_OBJ_NOTNULL(sp, SESS_MAGIC);
298
299		/*
300		* Whenever we come in from the acceptor or waiter, we need to set
301		* blocking mode. It would be simpler to do this in the acceptor
302		* or waiter, but we'd rather do the syscall in the worker thread.
303		*/
304	54988	if (http1_getstate(sp) == H1NEWREQ)
305	52614	VTCP_blocking(sp->fd);
306	54988	req->transport = XPORT_ByNumber(sp->sattr[SA_TRANSPORT]);
307
308	270564	while (1) {
309	271572	st = http1_getstate(sp);
310	271572	if (st == H1NEWREQ) {
311	117469	CHECK_OBJ_NOTNULL(req->transport, TRANSPORT_MAGIC);
312	117469	assert(isnan(req->t_prev));
313	117469	assert(isnan(req->t_req));
314	117469	AZ(req->vcl);
315	117469	AZ(req->esi_level);
316	117469	AN(WS_Reservation(req->htc->ws));
317
318	234938	hs = HTC_RxStuff(req->htc, HTTP1_Complete,
319	117469	&req->t_first, &req->t_req,
320	117469	sp->t_idle + SESS_TMO(sp, timeout_linger),
321	117469	sp->t_idle + SESS_TMO(sp, timeout_idle),
322		NAN,
323	117469	cache_param->http_req_size);
324	117469	assert(!WS_IsReserved(req->htc->ws));
325	117469	if (hs < HTC_S_EMPTY) {
326	32601	if (hs == HTC_S_OVERFLOW && cache_param->http_req_overflow_status != 0) {
327	42	(void)req->transport->minimal_response(req,
328	21	cache_param->http_req_overflow_status);
329	21	}
330	32601	req->acct.req_hdrbytes +=
331	32601	req->htc->rxbuf_e - req->htc->rxbuf_b;
332	32601	Req_AcctLogCharge(wrk->stats, req);
333	32601	Req_Release(req);
334	32601	SES_DeleteHS(sp, hs, NAN);
335	32601	return;
336		}
337	84868	if (hs == HTC_S_EMPTY) {
338	5197	wrk->stats->sess_herd++;
339	5197	Req_Release(req);
340	5197	SES_Wait(sp, &HTTP1_transport);
341	5197	return;
342		}
343	79671	if (hs != HTC_S_COMPLETE)
344	0	WRONG("htc_status (nonbad)");
345
346	79671	if (H2_prism_complete(req->htc) == HTC_S_COMPLETE) {
347	3150	if (!FEATURE(FEATURE_HTTP2)) {
348	42	SES_Close(req->sp, SC_REQ_HTTP20);
349	42	assert(!WS_IsReserved(req->ws));
350	42	assert(!WS_IsReserved(wrk->aws));
351	42	http1_setstate(sp, H1CLEANUP);
352	42	continue;
353		}
354	3108	http1_setstate(sp, NULL);
355	3108	H2_PU_Sess(wrk, sp, req);
356	3108	return;
357		}
358
359	76521	i = http1_dissect(wrk, req);
360	76521	req->acct.req_hdrbytes +=
361	76521	req->htc->rxbuf_e - req->htc->rxbuf_b;
362	76521	req->htc->rxbuf_b = NULL;
363	76521	req->htc->rxbuf_e = NULL;
364	76521	if (i) {
365	966	assert(req->doclose != SC_NULL);
366	966	SES_Close(req->sp, req->doclose);
367	966	assert(!WS_IsReserved(req->ws));
368	966	assert(!WS_IsReserved(wrk->aws));
369	966	http1_setstate(sp, H1CLEANUP);
370	966	continue;
371		}
372	75555	if (http_HdrIs(req->http, H_Upgrade, "h2c")) {
373	189	if (!FEATURE(FEATURE_HTTP2)) {
374	21	VSLb(req->vsl, SLT_Debug,
375		"H2 upgrade attempt");
376	189	} else if (req->htc->body_status != BS_NONE) {
377	21	VSLb(req->vsl, SLT_Debug,
378		"H2 upgrade attempt has body");
379	21	} else {
380	147	http1_setstate(sp, NULL);
381	147	req->err_code = 2;
382	147	H2_OU_Sess(wrk, sp, req);
383	147	return;
384		}
385	42	}
386	75408	assert(req->req_step == R_STP_TRANSPORT);
387	75408	VCL_TaskEnter(req->privs);
388	75408	VCL_TaskEnter(req->top->privs);
389	75408	http1_setstate(sp, H1PROC);
390	229511	} else if (st == H1PROC) {
391	77806	req->task->func = http1_req;
392	77806	req->task->priv = req;
393	77806	CNT_Embark(wrk, req);
394	77806	if (CNT_Request(req) == REQ_FSM_DISEMBARK)
395	2523	return;
396	75283	wrk->stats->client_req++;
397	75283	AZ(req->top->vcl0);
398	75283	req->task->func = NULL;
399	75283	req->task->priv = NULL;
400	75283	assert(!WS_IsReserved(req->ws));
401	75283	assert(!WS_IsReserved(wrk->aws));
402	75283	http1_setstate(sp, H1CLEANUP);
403	151580	} else if (st == H1CLEANUP) {
404
405	76297	assert(!WS_IsReserved(wrk->aws));
406	76297	assert(!WS_IsReserved(req->ws));
407
408	76297	if (sp->fd >= 0 && req->doclose != SC_NULL)
409	9270	SES_Close(sp, req->doclose);
410
411	76297	if (sp->fd < 0) {
412	11412	wrk->stats->sess_closed++;
413	11412	Req_Cleanup(sp, wrk, req);
414	11412	Req_Release(req);
415	11412	SES_Delete(sp, SC_NULL, NAN);
416	11412	return;
417		}
418
419	64885	Req_Cleanup(sp, wrk, req);
420	64885	HTC_RxInit(req->htc, req->ws);
421	64885	if (req->htc->rxbuf_e != req->htc->rxbuf_b)
422	301	wrk->stats->sess_readahead++;
423	64885	if (FEATURE(FEATURE_BUSY_STATS_RATE))
424	0	WRK_AddStat(wrk);
425	64885	http1_setstate(sp, H1NEWREQ);
426	64885	} else {
427	0	WRONG("Wrong H1 session state");
428		}
429		}
430	54988	}