static ngx_int_t
ngx_http_post_action(ngx_http_request_t *r)
{
    ngx_http_core_loc_conf_t  *clcf;
    clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
    if (clcf->post_action.data == NULL) {
        return NGX_DECLINED;
    }
    if (r->post_action && r->uri_changes == 0) {
        return NGX_DECLINED;
    }
    ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
                   "post action: \"%V\"", &clcf->post_action);
    r->main->count--;
    r->http_version = NGX_HTTP_VERSION_9;
    r->header_only = 1;
    r->post_action = 1;
    r->read_event_handler = ngx_http_block_reading;
    if (clcf->post_action.data[0] == '/') {
        ngx_http_internal_redirect(r, &clcf->post_action, NULL);
    } else {
        ngx_http_named_location(r, &clcf->post_action);
    }
    return NGX_OK;
}
['static void\nngx_http_upstream_init_request(ngx_http_request_t *r)\n{\n    ngx_str_t                      *host;\n    ngx_uint_t                      i;\n    ngx_resolver_ctx_t             *ctx, temp;\n    ngx_http_cleanup_t             *cln;\n    ngx_http_upstream_t            *u;\n    ngx_http_core_loc_conf_t       *clcf;\n    ngx_http_upstream_srv_conf_t   *uscf, **uscfp;\n    ngx_http_upstream_main_conf_t  *umcf;\n    if (r->aio) {\n        return;\n    }\n    u = r->upstream;\n#if (NGX_HTTP_CACHE)\n    if (u->conf->cache) {\n        ngx_int_t  rc;\n        rc = ngx_http_upstream_cache(r, u);\n        if (rc == NGX_BUSY) {\n            r->write_event_handler = ngx_http_upstream_init_request;\n            return;\n        }\n        r->write_event_handler = ngx_http_request_empty_handler;\n        if (rc == NGX_DONE) {\n            return;\n        }\n        if (rc != NGX_DECLINED) {\n            ngx_http_finalize_request(r, rc);\n            return;\n        }\n    }\n#endif\n    u->store = (u->conf->store || u->conf->store_lengths);\n    if (!u->store && !r->post_action && !u->conf->ignore_client_abort) {\n        r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;\n        r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;\n    }\n    if (r->request_body) {\n        u->request_bufs = r->request_body->bufs;\n    }\n    if (u->create_request(r) != NGX_OK) {\n        ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);\n        return;\n    }\n    u->peer.local = u->conf->local;\n    clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);\n    u->output.alignment = clcf->directio_alignment;\n    u->output.pool = r->pool;\n    u->output.bufs.num = 1;\n    u->output.bufs.size = clcf->client_body_buffer_size;\n    u->output.output_filter = ngx_chain_writer;\n    u->output.filter_ctx = &u->writer;\n    u->writer.pool = r->pool;\n    if (r->upstream_states == NULL) {\n        r->upstream_states = ngx_array_create(r->pool, 1,\n                                            sizeof(ngx_http_upstream_state_t));\n        if (r->upstream_states == NULL) {\n            ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);\n            return;\n        }\n    } else {\n        u->state = ngx_array_push(r->upstream_states);\n        if (u->state == NULL) {\n            ngx_http_upstream_finalize_request(r, u,\n                                               NGX_HTTP_INTERNAL_SERVER_ERROR);\n            return;\n        }\n        ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));\n    }\n    cln = ngx_http_cleanup_add(r, 0);\n    if (cln == NULL) {\n        ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);\n        return;\n    }\n    cln->handler = ngx_http_upstream_cleanup;\n    cln->data = r;\n    u->cleanup = &cln->handler;\n    if (u->resolved == NULL) {\n        uscf = u->conf->upstream;\n    } else {\n        if (u->resolved->sockaddr) {\n            if (ngx_http_upstream_create_round_robin_peer(r, u->resolved)\n                != NGX_OK)\n            {\n                ngx_http_upstream_finalize_request(r, u,\n                                               NGX_HTTP_INTERNAL_SERVER_ERROR);\n                return;\n            }\n            ngx_http_upstream_connect(r, u);\n            return;\n        }\n        host = &u->resolved->host;\n        umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);\n        uscfp = umcf->upstreams.elts;\n        for (i = 0; i < umcf->upstreams.nelts; i++) {\n            uscf = uscfp[i];\n            if (uscf->host.len == host->len\n                && ((uscf->port == 0 && u->resolved->no_port)\n                     || uscf->port == u->resolved->port)\n                && ngx_memcmp(uscf->host.data, host->data, host->len) == 0)\n            {\n                goto found;\n            }\n        }\n        if (u->resolved->port == 0) {\n            ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,\n                          "no port in upstream \\"%V\\"", host);\n            ngx_http_upstream_finalize_request(r, u,\n                                               NGX_HTTP_INTERNAL_SERVER_ERROR);\n            return;\n        }\n        temp.name = *host;\n        ctx = ngx_resolve_start(clcf->resolver, &temp);\n        if (ctx == NULL) {\n            ngx_http_upstream_finalize_request(r, u,\n                                               NGX_HTTP_INTERNAL_SERVER_ERROR);\n            return;\n        }\n        if (ctx == NGX_NO_RESOLVER) {\n            ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,\n                          "no resolver defined to resolve %V", host);\n            ngx_http_upstream_finalize_request(r, u, NGX_HTTP_BAD_GATEWAY);\n            return;\n        }\n        ctx->name = *host;\n        ctx->type = NGX_RESOLVE_A;\n        ctx->handler = ngx_http_upstream_resolve_handler;\n        ctx->data = r;\n        ctx->timeout = clcf->resolver_timeout;\n        u->resolved->ctx = ctx;\n        if (ngx_resolve_name(ctx) != NGX_OK) {\n            u->resolved->ctx = NULL;\n            ngx_http_upstream_finalize_request(r, u,\n                                               NGX_HTTP_INTERNAL_SERVER_ERROR);\n            return;\n        }\n        return;\n    }\nfound:\n    if (uscf->peer.init(r, uscf) != NGX_OK) {\n        ngx_http_upstream_finalize_request(r, u,\n                                           NGX_HTTP_INTERNAL_SERVER_ERROR);\n        return;\n    }\n    ngx_http_upstream_connect(r, u);\n}', 'static void\nngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)\n{\n    ngx_int_t          rc;\n    ngx_time_t        *tp;\n    ngx_connection_t  *c;\n    r->connection->log->action = "connecting to upstream";\n    r->connection->single_connection = 0;\n    if (u->state && u->state->response_sec) {\n        tp = ngx_timeofday();\n        u->state->response_sec = tp->sec - u->state->response_sec;\n        u->state->response_msec = tp->msec - u->state->response_msec;\n    }\n    u->state = ngx_array_push(r->upstream_states);\n    if (u->state == NULL) {\n        ngx_http_upstream_finalize_request(r, u,\n                                           NGX_HTTP_INTERNAL_SERVER_ERROR);\n        return;\n    }\n    ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));\n    tp = ngx_timeofday();\n    u->state->response_sec = tp->sec;\n    u->state->response_msec = tp->msec;\n    rc = ngx_event_connect_peer(&u->peer);\n    ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,\n                   "http upstream connect: %i", rc);\n    if (rc == NGX_ERROR) {\n        ngx_http_upstream_finalize_request(r, u,\n                                           NGX_HTTP_INTERNAL_SERVER_ERROR);\n        return;\n    }\n    u->state->peer = u->peer.name;\n    if (rc == NGX_BUSY) {\n        ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");\n        ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_NOLIVE);\n        return;\n    }\n    if (rc == NGX_DECLINED) {\n        ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);\n        return;\n    }\n    c = u->peer.connection;\n    c->data = r;\n    c->write->handler = ngx_http_upstream_handler;\n    c->read->handler = ngx_http_upstream_handler;\n    u->write_event_handler = ngx_http_upstream_send_request_handler;\n    u->read_event_handler = ngx_http_upstream_process_header;\n    c->sendfile &= r->connection->sendfile;\n    u->output.sendfile = c->sendfile;\n    if (c->pool == NULL) {\n        c->pool = ngx_create_pool(128, r->connection->log);\n        if (c->pool == NULL) {\n            ngx_http_upstream_finalize_request(r, u,\n                                               NGX_HTTP_INTERNAL_SERVER_ERROR);\n            return;\n        }\n    }\n    c->log = r->connection->log;\n    c->pool->log = c->log;\n    c->read->log = c->log;\n    c->write->log = c->log;\n    u->writer.out = NULL;\n    u->writer.last = &u->writer.out;\n    u->writer.connection = c;\n    u->writer.limit = 0;\n    if (u->request_sent) {\n        if (ngx_http_upstream_reinit(r, u) != NGX_OK) {\n            ngx_http_upstream_finalize_request(r, u,\n                                               NGX_HTTP_INTERNAL_SERVER_ERROR);\n            return;\n        }\n    }\n    if (r->request_body\n        && r->request_body->buf\n        && r->request_body->temp_file\n        && r == r->main)\n    {\n        u->output.free = ngx_alloc_chain_link(r->pool);\n        if (u->output.free == NULL) {\n            ngx_http_upstream_finalize_request(r, u,\n                                               NGX_HTTP_INTERNAL_SERVER_ERROR);\n            return;\n        }\n        u->output.free->buf = r->request_body->buf;\n        u->output.free->next = NULL;\n        u->output.allocated = 1;\n        r->request_body->buf->pos = r->request_body->buf->start;\n        r->request_body->buf->last = r->request_body->buf->start;\n        r->request_body->buf->tag = u->output.tag;\n    }\n    u->request_sent = 0;\n    if (rc == NGX_AGAIN) {\n        ngx_add_timer(c->write, u->conf->connect_timeout);\n        return;\n    }\n#if (NGX_HTTP_SSL)\n    if (u->ssl && c->ssl == NULL) {\n        ngx_http_upstream_ssl_init_connection(r, u, c);\n        return;\n    }\n#endif\n    ngx_http_upstream_send_request(r, u);\n}', 'static void\nngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)\n{\n    ngx_int_t          rc;\n    ngx_connection_t  *c;\n    c = u->peer.connection;\n    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,\n                   "http upstream send request");\n    if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {\n        ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);\n        return;\n    }\n    c->log->action = "sending request to upstream";\n    rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);\n    u->request_sent = 1;\n    if (rc == NGX_ERROR) {\n        ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);\n        return;\n    }\n    if (c->write->timer_set) {\n        ngx_del_timer(c->write);\n    }\n    if (rc == NGX_AGAIN) {\n        ngx_add_timer(c->write, u->conf->send_timeout);\n        if (ngx_handle_write_event(c->write, u->conf->send_lowat) != NGX_OK) {\n            ngx_http_upstream_finalize_request(r, u,\n                                               NGX_HTTP_INTERNAL_SERVER_ERROR);\n            return;\n        }\n        return;\n    }\n    if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {\n        if (ngx_tcp_push(c->fd) == NGX_ERROR) {\n            ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,\n                          ngx_tcp_push_n " failed");\n            ngx_http_upstream_finalize_request(r, u,\n                                               NGX_HTTP_INTERNAL_SERVER_ERROR);\n            return;\n        }\n        c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;\n    }\n    ngx_add_timer(c->read, u->conf->read_timeout);\n#if 1\n    if (c->read->ready) {\n        ngx_http_upstream_process_header(r, u);\n        return;\n    }\n#endif\n    u->write_event_handler = ngx_http_upstream_dummy_handler;\n    if (ngx_handle_write_event(c->write, 0) != NGX_OK) {\n        ngx_http_upstream_finalize_request(r, u,\n                                           NGX_HTTP_INTERNAL_SERVER_ERROR);\n        return;\n    }\n}', 'static void\nngx_http_upstream_process_header(ngx_http_request_t *r, ngx_http_upstream_t *u)\n{\n    ssize_t            n;\n    ngx_int_t          rc;\n    ngx_connection_t  *c;\n    c = u->peer.connection;\n    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,\n                   "http upstream process header");\n    c->log->action = "reading response header from upstream";\n    if (c->read->timedout) {\n        ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);\n        return;\n    }\n    if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {\n        ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);\n        return;\n    }\n    if (u->buffer.start == NULL) {\n        u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);\n        if (u->buffer.start == NULL) {\n            ngx_http_upstream_finalize_request(r, u,\n                                               NGX_HTTP_INTERNAL_SERVER_ERROR);\n            return;\n        }\n        u->buffer.pos = u->buffer.start;\n        u->buffer.last = u->buffer.start;\n        u->buffer.end = u->buffer.start + u->conf->buffer_size;\n        u->buffer.temporary = 1;\n        u->buffer.tag = u->output.tag;\n        if (ngx_list_init(&u->headers_in.headers, r->pool, 8,\n                          sizeof(ngx_table_elt_t))\n            != NGX_OK)\n        {\n            ngx_http_upstream_finalize_request(r, u,\n                                               NGX_HTTP_INTERNAL_SERVER_ERROR);\n            return;\n        }\n#if (NGX_HTTP_CACHE)\n        if (r->cache) {\n            u->buffer.pos += r->cache->header_start;\n            u->buffer.last = u->buffer.pos;\n        }\n#endif\n    }\n    for ( ;; ) {\n        n = c->recv(c, u->buffer.last, u->buffer.end - u->buffer.last);\n        if (n == NGX_AGAIN) {\n#if 0\n            ngx_add_timer(rev, u->read_timeout);\n#endif\n            if (ngx_handle_read_event(c->read, 0) != NGX_OK) {\n                ngx_http_upstream_finalize_request(r, u,\n                                               NGX_HTTP_INTERNAL_SERVER_ERROR);\n                return;\n            }\n            return;\n        }\n        if (n == 0) {\n            ngx_log_error(NGX_LOG_ERR, c->log, 0,\n                          "upstream prematurely closed connection");\n        }\n        if (n == NGX_ERROR || n == 0) {\n            ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);\n            return;\n        }\n        u->buffer.last += n;\n#if 0\n        u->valid_header_in = 0;\n        u->peer.cached = 0;\n#endif\n        rc = u->process_header(r);\n        if (rc == NGX_AGAIN) {\n            if (u->buffer.last == u->buffer.end) {\n                ngx_log_error(NGX_LOG_ERR, c->log, 0,\n                              "upstream sent too big header");\n                ngx_http_upstream_next(r, u,\n                                       NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);\n                return;\n            }\n            continue;\n        }\n        break;\n    }\n    if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {\n        ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);\n        return;\n    }\n    if (rc == NGX_ERROR) {\n        ngx_http_upstream_finalize_request(r, u,\n                                           NGX_HTTP_INTERNAL_SERVER_ERROR);\n        return;\n    }\n    if (u->headers_in.status_n > NGX_HTTP_SPECIAL_RESPONSE) {\n        if (r->subrequest_in_memory) {\n            u->buffer.last = u->buffer.pos;\n        }\n        if (ngx_http_upstream_test_next(r, u) == NGX_OK) {\n            return;\n        }\n        if (ngx_http_upstream_intercept_errors(r, u) == NGX_OK) {\n            return;\n        }\n    }\n    if (ngx_http_upstream_process_headers(r, u) != NGX_OK) {\n        return;\n    }\n    if (!r->subrequest_in_memory) {\n        ngx_http_upstream_send_response(r, u);\n        return;\n    }\n    if (u->input_filter == NULL) {\n        u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;\n        u->input_filter = ngx_http_upstream_non_buffered_filter;\n        u->input_filter_ctx = r;\n    }\n    if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {\n        ngx_http_upstream_finalize_request(r, u,\n                                           NGX_HTTP_INTERNAL_SERVER_ERROR);\n        return;\n    }\n    n = u->buffer.last - u->buffer.pos;\n    if (n) {\n        u->buffer.last -= n;\n        u->state->response_length += n;\n        if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {\n            ngx_http_upstream_finalize_request(r, u, NGX_ERROR);\n            return;\n        }\n        if (u->length == 0) {\n            ngx_http_upstream_finalize_request(r, u, 0);\n            return;\n        }\n    }\n    u->read_event_handler = ngx_http_upstream_process_body_in_memory;\n    ngx_http_upstream_process_body_in_memory(r, u);\n}', 'static ngx_int_t\nngx_http_upstream_test_next(ngx_http_request_t *r, ngx_http_upstream_t *u)\n{\n    ngx_uint_t                 status;\n    ngx_http_upstream_next_t  *un;\n    status = u->headers_in.status_n;\n    for (un = ngx_http_upstream_next_errors; un->status; un++) {\n        if (status != un->status) {\n            continue;\n        }\n        if (u->peer.tries > 1 && (u->conf->next_upstream & un->mask)) {\n            ngx_http_upstream_next(r, u, un->mask);\n            return NGX_OK;\n        }\n#if (NGX_HTTP_CACHE)\n        if (u->cache_status == NGX_HTTP_CACHE_EXPIRED\n            && (u->conf->cache_use_stale & un->mask))\n        {\n            ngx_int_t  rc;\n            rc = u->reinit_request(r);\n            if (rc == NGX_OK) {\n                u->cache_status = NGX_HTTP_CACHE_STALE;\n                rc = ngx_http_upstream_cache_send(r, u);\n            }\n            ngx_http_upstream_finalize_request(r, u, rc);\n            return NGX_OK;\n        }\n#endif\n    }\n    return NGX_DECLINED;\n}', 'static void\nngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,\n    ngx_uint_t ft_type)\n{\n    ngx_uint_t  status, state;\n    ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,\n                   "http next upstream, %xi", ft_type);\n#if 0\n    ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);\n#endif\n    if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {\n        state = NGX_PEER_NEXT;\n    } else {\n        state = NGX_PEER_FAILED;\n    }\n    if (ft_type != NGX_HTTP_UPSTREAM_FT_NOLIVE) {\n        u->peer.free(&u->peer, u->peer.data, state);\n    }\n    if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {\n        ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,\n                      "upstream timed out");\n    }\n    if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {\n        status = 0;\n        u->peer.tries++;\n    } else {\n        switch(ft_type) {\n        case NGX_HTTP_UPSTREAM_FT_TIMEOUT:\n            status = NGX_HTTP_GATEWAY_TIME_OUT;\n            break;\n        case NGX_HTTP_UPSTREAM_FT_HTTP_500:\n            status = NGX_HTTP_INTERNAL_SERVER_ERROR;\n            break;\n        case NGX_HTTP_UPSTREAM_FT_HTTP_404:\n            status = NGX_HTTP_NOT_FOUND;\n            break;\n        default:\n            status = NGX_HTTP_BAD_GATEWAY;\n        }\n    }\n    if (r->connection->error) {\n        ngx_http_upstream_finalize_request(r, u,\n                                           NGX_HTTP_CLIENT_CLOSED_REQUEST);\n        return;\n    }\n    if (status) {\n        u->state->status = status;\n        if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {\n#if (NGX_HTTP_CACHE)\n            if (u->cache_status == NGX_HTTP_CACHE_EXPIRED\n                && (u->conf->cache_use_stale & ft_type))\n            {\n                ngx_int_t  rc;\n                rc = u->reinit_request(r);\n                if (rc == NGX_OK) {\n                    u->cache_status = NGX_HTTP_CACHE_STALE;\n                    rc = ngx_http_upstream_cache_send(r, u);\n                }\n                ngx_http_upstream_finalize_request(r, u, rc);\n                return;\n            }\n#endif\n            ngx_http_upstream_finalize_request(r, u, status);\n            return;\n        }\n    }\n    if (u->peer.connection) {\n        ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,\n                       "close http upstream connection: %d",\n                       u->peer.connection->fd);\n#if (NGX_HTTP_SSL)\n        if (u->peer.connection->ssl) {\n            u->peer.connection->ssl->no_wait_shutdown = 1;\n            u->peer.connection->ssl->no_send_shutdown = 1;\n            (void) ngx_ssl_shutdown(u->peer.connection);\n        }\n#endif\n        if (u->peer.connection->pool) {\n            ngx_destroy_pool(u->peer.connection->pool);\n        }\n        ngx_close_connection(u->peer.connection);\n        u->peer.connection = NULL;\n    }\n#if 0\n    if (u->conf->busy_lock && !u->busy_locked) {\n        ngx_http_upstream_busy_lock(p);\n        return;\n    }\n#endif\n    ngx_http_upstream_connect(r, u);\n}', 'static ngx_int_t\nngx_http_upstream_cache_send(ngx_http_request_t *r, ngx_http_upstream_t *u)\n{\n    ngx_int_t          rc;\n    ngx_http_cache_t  *c;\n    r->cached = 1;\n    c = r->cache;\n    if (c->header_start == c->body_start) {\n        r->http_version = NGX_HTTP_VERSION_9;\n        return ngx_http_cache_send(r);\n    }\n    u->buffer = *c->buf;\n    u->buffer.pos += c->header_start;\n    ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));\n    u->headers_in.content_length_n = -1;\n    if (ngx_list_init(&u->headers_in.headers, r->pool, 8,\n                      sizeof(ngx_table_elt_t))\n        != NGX_OK)\n    {\n        return NGX_ERROR;\n    }\n    rc = u->process_header(r);\n    if (rc == NGX_OK) {\n        if (ngx_http_upstream_process_headers(r, u) != NGX_OK) {\n            return NGX_DONE;\n        }\n        return ngx_http_cache_send(r);\n    }\n    if (rc == NGX_ERROR) {\n        return NGX_ERROR;\n    }\n    return rc;\n}', 'static ngx_int_t\nngx_http_upstream_process_headers(ngx_http_request_t *r, ngx_http_upstream_t *u)\n{\n    ngx_str_t                      *uri, args;\n    ngx_uint_t                      i, flags;\n    ngx_list_part_t                *part;\n    ngx_table_elt_t                *h;\n    ngx_http_upstream_header_t     *hh;\n    ngx_http_upstream_main_conf_t  *umcf;\n    umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);\n    if (u->headers_in.x_accel_redirect\n        && !(u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_XA_REDIRECT))\n    {\n        ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);\n        part = &u->headers_in.headers.part;\n        h = part->elts;\n        for (i = 0;  ; i++) {\n            if (i >= part->nelts) {\n                if (part->next == NULL) {\n                    break;\n                }\n                part = part->next;\n                h = part->elts;\n                i = 0;\n            }\n            hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,\n                               h[i].lowcase_key, h[i].key.len);\n            if (hh && hh->redirect) {\n                if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {\n                    ngx_http_finalize_request(r,\n                                              NGX_HTTP_INTERNAL_SERVER_ERROR);\n                    return NGX_DONE;\n                }\n            }\n        }\n        uri = &u->headers_in.x_accel_redirect->value;\n        ngx_str_null(&args);\n        flags = NGX_HTTP_LOG_UNSAFE;\n        if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {\n            ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);\n            return NGX_DONE;\n        }\n        if (r->method != NGX_HTTP_HEAD) {\n            r->method = NGX_HTTP_GET;\n        }\n        ngx_http_internal_redirect(r, uri, &args);\n        ngx_http_finalize_request(r, NGX_DONE);\n        return NGX_DONE;\n    }\n    part = &u->headers_in.headers.part;\n    h = part->elts;\n    for (i = 0;  ; i++) {\n        if (i >= part->nelts) {\n            if (part->next == NULL) {\n                break;\n            }\n            part = part->next;\n            h = part->elts;\n            i = 0;\n        }\n        if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,\n                          h[i].lowcase_key, h[i].key.len))\n        {\n            continue;\n        }\n        hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,\n                           h[i].lowcase_key, h[i].key.len);\n        if (hh) {\n            if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {\n                ngx_http_upstream_finalize_request(r, u,\n                                               NGX_HTTP_INTERNAL_SERVER_ERROR);\n                return NGX_DONE;\n            }\n            continue;\n        }\n        if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {\n            ngx_http_upstream_finalize_request(r, u,\n                                               NGX_HTTP_INTERNAL_SERVER_ERROR);\n            return NGX_DONE;\n        }\n    }\n    if (r->headers_out.server && r->headers_out.server->value.data == NULL) {\n        r->headers_out.server->hash = 0;\n    }\n    if (r->headers_out.date && r->headers_out.date->value.data == NULL) {\n        r->headers_out.date->hash = 0;\n    }\n    r->headers_out.status = u->headers_in.status_n;\n    r->headers_out.status_line = u->headers_in.status_line;\n    r->headers_out.content_length_n = u->headers_in.content_length_n;\n    u->length = u->headers_in.content_length_n;\n    return NGX_OK;\n}', 'static void\nngx_http_upstream_finalize_request(ngx_http_request_t *r,\n    ngx_http_upstream_t *u, ngx_int_t rc)\n{\n    ngx_time_t  *tp;\n    ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,\n                   "finalize http upstream request: %i", rc);\n    if (u->cleanup) {\n        *u->cleanup = NULL;\n        u->cleanup = NULL;\n    }\n    if (u->resolved && u->resolved->ctx) {\n        ngx_resolve_name_done(u->resolved->ctx);\n        u->resolved->ctx = NULL;\n    }\n    if (u->state && u->state->response_sec) {\n        tp = ngx_timeofday();\n        u->state->response_sec = tp->sec - u->state->response_sec;\n        u->state->response_msec = tp->msec - u->state->response_msec;\n        if (u->pipe) {\n            u->state->response_length = u->pipe->read_length;\n        }\n    }\n    u->finalize_request(r, rc);\n    if (u->peer.free) {\n        u->peer.free(&u->peer, u->peer.data, 0);\n    }\n    if (u->peer.connection) {\n#if (NGX_HTTP_SSL)\n        if (u->peer.connection->ssl) {\n            u->peer.connection->ssl->no_wait_shutdown = 1;\n            (void) ngx_ssl_shutdown(u->peer.connection);\n        }\n#endif\n        ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,\n                       "close http upstream connection: %d",\n                       u->peer.connection->fd);\n        if (u->peer.connection->pool) {\n            ngx_destroy_pool(u->peer.connection->pool);\n        }\n        ngx_close_connection(u->peer.connection);\n    }\n    u->peer.connection = NULL;\n    if (u->pipe && u->pipe->temp_file) {\n        ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,\n                       "http upstream temp fd: %d",\n                       u->pipe->temp_file->file.fd);\n    }\n    if (u->store && u->pipe && u->pipe->temp_file\n        && u->pipe->temp_file->file.fd != NGX_INVALID_FILE)\n    {\n        if (ngx_delete_file(u->pipe->temp_file->file.name.data)\n            == NGX_FILE_ERROR)\n        {\n            ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,\n                          ngx_delete_file_n " \\"%s\\" failed",\n                          u->pipe->temp_file->file.name.data);\n        }\n    }\n#if (NGX_HTTP_CACHE)\n    if (r->cache) {\n        if (u->cacheable) {\n            if (rc == NGX_HTTP_BAD_GATEWAY || rc == NGX_HTTP_GATEWAY_TIME_OUT) {\n                time_t  valid;\n                valid = ngx_http_file_cache_valid(u->conf->cache_valid, rc);\n                if (valid) {\n                    r->cache->valid_sec = ngx_time() + valid;\n                    r->cache->error = rc;\n                }\n            }\n        }\n        ngx_http_file_cache_free(r->cache, u->pipe->temp_file);\n    }\n#endif\n    if (u->header_sent\n        && rc != NGX_HTTP_REQUEST_TIME_OUT\n        && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))\n    {\n        rc = 0;\n    }\n    if (rc == NGX_DECLINED) {\n        return;\n    }\n    r->connection->log->action = "sending to client";\n    if (rc == 0\n#if (NGX_HTTP_CACHE)\n        && !r->cached\n#endif\n       )\n    {\n        rc = ngx_http_send_special(r, NGX_HTTP_LAST);\n    }\n    ngx_http_finalize_request(r, rc);\n}', 'void\nngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)\n{\n    ngx_connection_t          *c;\n    ngx_http_request_t        *pr;\n    ngx_http_core_loc_conf_t  *clcf;\n    c = r->connection;\n    ngx_log_debug5(NGX_LOG_DEBUG_HTTP, c->log, 0,\n                   "http finalize request: %d, \\"%V?%V\\" a:%d, c:%d",\n                   rc, &r->uri, &r->args, r == c->data, r->main->count);\n    if (rc == NGX_DONE) {\n        ngx_http_finalize_connection(r);\n        return;\n    }\n    if (rc == NGX_OK && r->filter_finalize) {\n        c->error = 1;\n        return;\n    }\n    if (rc == NGX_DECLINED) {\n        r->content_handler = NULL;\n        r->write_event_handler = ngx_http_core_run_phases;\n        ngx_http_core_run_phases(r);\n        return;\n    }\n    if (r != r->main && r->post_subrequest) {\n        rc = r->post_subrequest->handler(r, r->post_subrequest->data, rc);\n    }\n    if (rc == NGX_ERROR\n        || rc == NGX_HTTP_REQUEST_TIME_OUT\n        || rc == NGX_HTTP_CLIENT_CLOSED_REQUEST\n        || c->error)\n    {\n        if (ngx_http_post_action(r) == NGX_OK) {\n            return;\n        }\n        if (r->main->blocked) {\n            r->write_event_handler = ngx_http_request_finalizer;\n        }\n        ngx_http_terminate_request(r, rc);\n        return;\n    }\n    if (rc >= NGX_HTTP_SPECIAL_RESPONSE\n        || rc == NGX_HTTP_CREATED\n        || rc == NGX_HTTP_NO_CONTENT)\n    {\n        if (rc == NGX_HTTP_CLOSE) {\n            ngx_http_terminate_request(r, rc);\n            return;\n        }\n        if (r == r->main) {\n            if (c->read->timer_set) {\n                ngx_del_timer(c->read);\n            }\n            if (c->write->timer_set) {\n                ngx_del_timer(c->write);\n            }\n        }\n        c->read->handler = ngx_http_request_handler;\n        c->write->handler = ngx_http_request_handler;\n        ngx_http_finalize_request(r, ngx_http_special_response_handler(r, rc));\n        return;\n    }\n    if (r != r->main) {\n        if (r->buffered || r->postponed) {\n            if (ngx_http_set_write_handler(r) != NGX_OK) {\n                ngx_http_terminate_request(r, 0);\n            }\n            return;\n        }\n#if (NGX_DEBUG)\n        if (r != c->data) {\n            ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,\n                           "http finalize non-active request: \\"%V?%V\\"",\n                           &r->uri, &r->args);\n        }\n#endif\n        pr = r->parent;\n        if (r == c->data) {\n            r->main->count--;\n            r->main->subrequests++;\n            if (!r->logged) {\n                clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);\n                if (clcf->log_subrequest) {\n                    ngx_http_log_request(r);\n                }\n                r->logged = 1;\n            } else {\n                ngx_log_error(NGX_LOG_ALERT, c->log, 0,\n                              "subrequest: \\"%V?%V\\" logged again",\n                              &r->uri, &r->args);\n            }\n            r->done = 1;\n            if (pr->postponed && pr->postponed->request == r) {\n                pr->postponed = pr->postponed->next;\n            }\n            c->data = pr;\n        } else {\n            r->write_event_handler = ngx_http_request_finalizer;\n            if (r->waited) {\n                r->done = 1;\n            }\n        }\n        if (ngx_http_post_request(pr, NULL) != NGX_OK) {\n            r->main->count++;\n            ngx_http_terminate_request(r, 0);\n            return;\n        }\n        ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,\n                       "http wake parent request: \\"%V?%V\\"",\n                       &pr->uri, &pr->args);\n        return;\n    }\n    if (r->buffered || c->buffered || r->postponed || r->blocked) {\n        if (ngx_http_set_write_handler(r) != NGX_OK) {\n            ngx_http_terminate_request(r, 0);\n        }\n        return;\n    }\n    if (r != c->data) {\n        ngx_log_error(NGX_LOG_ALERT, c->log, 0,\n                      "http finalize non-active request: \\"%V?%V\\"",\n                      &r->uri, &r->args);\n        return;\n    }\n    r->done = 1;\n    r->write_event_handler = ngx_http_request_empty_handler;\n    if (!r->post_action) {\n        r->request_complete = 1;\n    }\n    if (ngx_http_post_action(r) == NGX_OK) {\n        return;\n    }\n    if (c->read->timer_set) {\n        ngx_del_timer(c->read);\n    }\n    if (c->write->timer_set) {\n        c->write->delayed = 0;\n        ngx_del_timer(c->write);\n    }\n    if (c->read->eof) {\n        ngx_http_close_request(r, 0);\n        return;\n    }\n    ngx_http_finalize_connection(r);\n}', 'static ngx_int_t\nngx_http_post_action(ngx_http_request_t *r)\n{\n    ngx_http_core_loc_conf_t  *clcf;\n    clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);\n    if (clcf->post_action.data == NULL) {\n        return NGX_DECLINED;\n    }\n    if (r->post_action && r->uri_changes == 0) {\n        return NGX_DECLINED;\n    }\n    ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,\n                   "post action: \\"%V\\"", &clcf->post_action);\n    r->main->count--;\n    r->http_version = NGX_HTTP_VERSION_9;\n    r->header_only = 1;\n    r->post_action = 1;\n    r->read_event_handler = ngx_http_block_reading;\n    if (clcf->post_action.data[0] == \'/\') {\n        ngx_http_internal_redirect(r, &clcf->post_action, NULL);\n    } else {\n        ngx_http_named_location(r, &clcf->post_action);\n    }\n    return NGX_OK;\n}']