HTTP keep-alive connections support.

2017-12-28 16:01:06 +03:00
parent 497faf1b9a
commit 9a6d3c5775
17 changed files with 2000 additions and 898 deletions
--- a/src/nxt_http_error.c
+++ b/src/nxt_http_error.c
@@ -0,0 +1,105 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ * Copyright (C) NGINX, Inc.
+ */
+
+#include <nxt_router.h>
+#include <nxt_http.h>
+
+
+static void nxt_http_request_send_error_body(nxt_task_t *task, void *r,
+    void *data);
+
+
+static const nxt_http_request_state_t  nxt_http_request_send_state;
+
+
+static const char  error[] =
+    "<html><head><title>Error</title><head>"
+    "<body>Error.</body></html>\r\n";
+
+
+void
+nxt_http_request_error(nxt_task_t *task, nxt_http_request_t *r,
+    nxt_http_status_t status)
+{
+    nxt_http_field_t  *content_type;
+
+    nxt_debug(task, "http request error: %d", status);
+
+    if (r->header_sent) {
+        goto fail;
+    }
+
+    r->status = status;
+
+    r->resp.fields = nxt_list_create(r->mem_pool, 8, sizeof(nxt_http_field_t));
+    if (nxt_slow_path(r == NULL)) {
+        goto fail;
+    }
+
+    content_type = nxt_list_zero_add(r->resp.fields);
+    if (nxt_slow_path(content_type == NULL)) {
+        goto fail;
+    }
+
+    nxt_http_field_set(content_type, "Content-Type", "text/html");
+
+    r->resp.content_length = NULL;
+    r->resp.content_length_n = sizeof(error) - 1;
+
+    r->state = &nxt_http_request_send_state;
+
+    nxt_http_request_header_send(task, r);
+    return;
+
+fail:
+
+    nxt_http_request_release(task, r);
+}
+
+
+static const nxt_http_request_state_t  nxt_http_request_send_state
+    nxt_aligned(64) =
+{
+    .ready_handler = nxt_http_request_send_error_body,
+    .error_handler = nxt_http_request_close_handler,
+};
+
+
+static void
+nxt_http_request_send_error_body(nxt_task_t *task, void *obj, void *data)
+{
+    nxt_buf_t           *out, *last;
+    nxt_http_request_t  *r;
+
+    r = obj;
+
+    nxt_debug(task, "http request send error body");
+
+    out = nxt_buf_mem_alloc(r->mem_pool, 0, 0);
+    if (nxt_slow_path(out == NULL)) {
+        goto fail;
+    }
+
+    out->mem.start = (u_char *) error;
+    out->mem.pos = out->mem.start;
+    out->mem.free = out->mem.start + sizeof(error) - 1;
+    out->mem.end = out->mem.free;
+
+    last = nxt_http_request_last_buffer(task, r);
+    if (nxt_slow_path(last == NULL)) {
+        goto fail;
+    }
+
+    out->next = last;
+
+    nxt_http_request_send(task, r, out);
+
+    return;
+
+fail:
+    // TODO
+    nxt_http_request_release(task, r);
+}