Stream ssl_preread: added SSLv2 Client Hello support.
In particular, it was not possible to obtain SSLv2 protocol version.
diff --git a/src/stream/ngx_stream_ssl_preread_module.c b/src/stream/ngx_stream_ssl_preread_module.c
index 8deb725..a236fc5 100644
--- a/src/stream/ngx_stream_ssl_preread_module.c
+++ b/src/stream/ngx_stream_ssl_preread_module.c
@@ -149,6 +149,14 @@
while (last - p >= 5) {
+ if ((p[0] & 0x80) && p[2] == 1 && (p[3] == 0 || p[3] == 3)) {
+ ngx_log_debug0(NGX_LOG_DEBUG_STREAM, ctx->log, 0,
+ "ssl preread: version 2 ClientHello");
+ ctx->version[0] = p[3];
+ ctx->version[1] = p[4];
+ return NGX_OK;
+ }
+
if (p[0] != 0x16) {
ngx_log_debug0(NGX_LOG_DEBUG_STREAM, ctx->log, 0,
"ssl preread: not a handshake");
@@ -507,8 +515,12 @@
ngx_str_null(&version);
switch (ctx->version[0]) {
- case 2:
- ngx_str_set(&version, "SSLv2");
+ case 0:
+ switch (ctx->version[1]) {
+ case 2:
+ ngx_str_set(&version, "SSLv2");
+ break;
+ }
break;
case 3:
switch (ctx->version[1]) {