send hostname in TLS SNI extension

CHANGES

@@ -1,3 +1,8 @@
+wrk 4.0.2
+
+ * Send hostname using TLS SNI.
+ * Add optional WITH_OPENSSL and WITH_LUAJIT to use system libs.
+ * Bundle OpenSSL 1.0.2.
  * delay() can return milliseconds to delay sending next request.
 
 wrk 4.0.0

INSTALL

@@ -0,0 +1,29 @@
+Overview
+
+  wrk should build on most UNIX-like operating systems and
+  architectures that have GNU make and are supported by LuaJIT and
+  OpenSSL. Some systems may require additional CFLAGS or LDFLAGS,
+  see the top of the Makefile for examples
+
+  In many cases simply running `make` (often `gmake` on *BSD) will
+  do the trick.
+
+Dependencies
+
+  wrk requires LuaJIT and OpenSSL and is distributed with appropriate
+  versions that will be unpacked and built as necessary.
+
+  If you are building wrk packages for an OS distribution or otherwise
+  prefer to use system versions of dependencies you may specify their
+  location when invoking make with one or more of:
+
+    WITH_LUAJIT
+    WITH_OPENSSL
+
+  For example to use the system version of both libraries on Linux:
+
+    make WITH_LUAJIT=/usr WITH_OPENSSL=/usr
+
+  Or to use the Homebrew version of OpenSSL on Mac OS X:
+
+    make WITH_OPENSSL=/usr/local/opt/openssl

src/net.c

@@ -6,7 +6,7 @@
 
 #include "net.h"
 
-status sock_connect(connection *c) {
+status sock_connect(connection *c, char *host) {
     return OK;
 }
 

src/net.h

@@ -13,14 +13,14 @@ typedef enum {
 } status;
 
 struct sock {
-    status ( *connect)(connection *);
+    status ( *connect)(connection *, char *);
     status (   *close)(connection *);
     status (    *read)(connection *, size_t *);
     status (   *write)(connection *, char *, size_t, size_t *);
     size_t (*readable)(connection *);
 };
 
-status sock_connect(connection *);
+status sock_connect(connection *, char *);
 status sock_close(connection *);
 status sock_read(connection *, size_t *);
 status sock_write(connection *, char *, size_t, size_t *);

src/ssl.c

@@ -49,9 +49,10 @@ SSL_CTX *ssl_init() {
     return ctx;
 }
 
-status ssl_connect(connection *c) {
+status ssl_connect(connection *c, char *host) {
     int r;
     SSL_set_fd(c->ssl, c->fd);
+    SSL_set_tlsext_host_name(c->ssl, host);
     if ((r = SSL_connect(c->ssl)) != 1) {
         switch (SSL_get_error(c->ssl, r)) {
             case SSL_ERROR_WANT_READ:  return RETRY;

src/ssl.h

@@ -5,7 +5,7 @@
 
 SSL_CTX *ssl_init();
 
-status ssl_connect(connection *);
+status ssl_connect(connection *, char *);
 status ssl_close(connection *);
 status ssl_read(connection *, size_t *);
 status ssl_write(connection *, char *, size_t, size_t *);

src/wrk.c

@@ -13,6 +13,7 @@ static struct config {
     bool     delay;
     bool     dynamic;
     bool     latency;
+    char    *host;
     char    *script;
     SSL_CTX *ctx;
 } cfg;
@@ -98,6 +99,8 @@ int main(int argc, char **argv) {
         exit(1);
     }
 
+    cfg.host = host;
+
     for (uint64_t i = 0; i < cfg.threads; i++) {
         thread *t      = &threads[i];
         t->loop        = aeCreateEventLoop(10 + cfg.connections * 3);
@@ -359,7 +362,7 @@ static int response_complete(http_parser *parser) {
 static void socket_connected(aeEventLoop *loop, int fd, void *data, int mask) {
     connection *c = data;
 
-    switch (sock.connect(c)) {
+    switch (sock.connect(c, cfg.host)) {
         case OK:    break;
         case ERROR: goto error;
         case RETRY: return;