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SSL: Next Protocol Negotiation extension support.

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Not only this is useful for the upcoming SPDY support, but it can
also help to improve HTTPS performance by enabling TLS False Start
in Chrome/Chromium browsers [1].  So, we always enable NPN for HTTPS
if it is supported by OpenSSL.

[1] http://www.imperialviolet.org/2012/04/11/falsestart.html
This commit is contained in:
Valentin Bartenev 2013-03-07 18:21:28 +00:00
parent bf23093e10
commit 8fbef4841f
1 changed files with 34 additions and 0 deletions
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34
src/http/modules/ngx_http_ssl_module.c
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@ -18,6 +18,11 @@ typedef ngx_int_t (*ngx_ssl_variable_handler_pt)(ngx_connection_t *c,
#define NGX_DEFAULT_ECDH_CURVE "prime256v1"
#ifdef TLSEXT_TYPE_next_proto_neg
static int ngx_http_ssl_npn_advertised(ngx_ssl_conn_t *ssl_conn,
const unsigned char **out, unsigned int *outlen, void *arg);
#endif
static ngx_int_t ngx_http_ssl_static_variable(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data);
static ngx_int_t ngx_http_ssl_variable(ngx_http_request_t *r,
@ -262,6 +267,30 @@ static ngx_http_variable_t ngx_http_ssl_vars[] = {
static ngx_str_t ngx_http_ssl_sess_id_ctx = ngx_string("HTTP");
#ifdef TLSEXT_TYPE_next_proto_neg
#define NGX_HTTP_NPN_ADVERTISE "\x08http/1.1"
static int
ngx_http_ssl_npn_advertised(ngx_ssl_conn_t *ssl_conn,
const unsigned char **out, unsigned int *outlen, void *arg)
{
#if (NGX_DEBUG)
ngx_connection_t *c;
c = ngx_ssl_get_connection(ssl_conn);
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "SSL NPN advertised");
#endif
*out = (unsigned char *) NGX_HTTP_NPN_ADVERTISE;
*outlen = sizeof(NGX_HTTP_NPN_ADVERTISE) - 1;
return SSL_TLSEXT_ERR_OK;
}
#endif
static ngx_int_t
ngx_http_ssl_static_variable(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data)
@ -490,6 +519,11 @@ ngx_http_ssl_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
#endif
#ifdef TLSEXT_TYPE_next_proto_neg
SSL_CTX_set_next_protos_advertised_cb(conf->ssl.ctx,
ngx_http_ssl_npn_advertised, NULL);
#endif
cln = ngx_pool_cleanup_add(cf->pool, 0);
if (cln == NULL) {
return NGX_CONF_ERROR;