use context service buffer instead of stack for server_socket_service

Reduces lws_server_socket_service from 4208 to 80 stack allocation
on x86_64

Signed-off-by: Andy Green <andy.green@linaro.org>

diff --git a/lib/server.c b/lib/server.c
index aa51b12..5f746f5 100644 (file)
--- a/lib/server.c
+++ b/lib/server.c
@@ -126,8 +126,6 @@ libwebsocket_create_new_server_wsi(struct libwebsocket_context *context)
 int lws_server_socket_service(struct libwebsocket_context *context,
                        struct libwebsocket *wsi, struct pollfd *pollfd)
 {
-       unsigned char buf[LWS_SEND_BUFFER_PRE_PADDING + 1 +
-                         LWS_MAX_SOCKET_IO_BUF + LWS_SEND_BUFFER_POST_PADDING];
        struct libwebsocket *new_wsi;
        int accept_fd;
        unsigned int clilen;
@@ -153,10 +151,10 @@ int lws_server_socket_service(struct libwebsocket_context *context,
 
        #ifdef LWS_OPENSSL_SUPPORT
                        if (wsi->ssl)
-                               len = SSL_read(wsi->ssl, buf, sizeof buf);
+                               len = SSL_read(wsi->ssl, context->service_buffer, sizeof context->service_buffer);
                        else
        #endif
-                               len = recv(pollfd->fd, buf, sizeof buf, 0);
+                               len = recv(pollfd->fd, context->service_buffer, sizeof context->service_buffer, 0);
 
                        if (len < 0) {
                                lwsl_debug("Socket read returned %d\n", len);
@@ -171,7 +169,7 @@ int lws_server_socket_service(struct libwebsocket_context *context,
                                return 0;
                        }
 
-                       n = libwebsocket_read(context, wsi, buf, len);
+                       n = libwebsocket_read(context, wsi, context->service_buffer, len);
                        if (n < 0)
                                /* we closed wsi */
                                return 0;