diff --git a/lib/output.c b/lib/output.c
index f878410814cfab1006ea1badc6fdad869a4c1ecd..213a4ec81dc87b6041698af6d2a92622fcb798a9 100644
--- a/lib/output.c
+++ b/lib/output.c
@@ -46,10 +46,8 @@ lws_0405_frame_mask_generate(struct lws *wsi)
 
 LWS_VISIBLE void lwsl_hexdump(void *vbuf, size_t len)
 {
-	unsigned int n;
-	unsigned int m;
-	unsigned int start;
 	unsigned char *buf = (unsigned char *)vbuf;
+	unsigned int n, m, start;
 	char line[80];
 	char *p;
 
@@ -93,9 +91,8 @@ LWS_VISIBLE void lwsl_hexdump(void *vbuf, size_t len)
 int lws_issue_raw(struct lws *wsi, unsigned char *buf, size_t len)
 {
 	struct lws_context *context = wsi->protocol->owning_server;
-	int n;
 	size_t real_len = len;
-	int m;
+	int n, m;
 	
 	if (!len)
 		return 0;
@@ -123,9 +120,7 @@ int lws_issue_raw(struct lws *wsi, unsigned char *buf, size_t len)
 	if (!lws_socket_is_valid(wsi->sock))
 		lwsl_warn("** error invalid sock but expected to send\n");
 
-	/*
-	 * nope, send it on the socket directly
-	 */
+	/* nope, send it on the socket directly */
 	lws_latency_pre(context, wsi);
 	n = lws_ssl_capable_write(wsi, buf, len);
 	lws_latency(context, wsi, "send lws_issue_raw", n, (unsigned int)n == len);
@@ -162,8 +157,7 @@ handle_truncated_send:
 			}
 		}
 		/* always callback on writeable */
-		lws_callback_on_writable(
-					     wsi->protocol->owning_server, wsi);
+		lws_callback_on_writable(wsi->protocol->owning_server, wsi);
 
 		return n;
 	}
@@ -187,7 +181,7 @@ handle_truncated_send:
 	 * first priority next time the socket is writable)
 	 */
 	lwsl_info("***** %x new partial sent %d from %d total\n",
-						      wsi, n, real_len);
+		  wsi, n, real_len);
 
 	/*
 	 *  - if we still have a suitable malloc lying around, use it
@@ -195,14 +189,14 @@ handle_truncated_send:
 	 *  - or, if no buffer, create it
 	 */
 	if (!wsi->truncated_send_malloc ||
-			real_len - n > wsi->truncated_send_allocation) {
+	    real_len - n > wsi->truncated_send_allocation) {
 		lws_free(wsi->truncated_send_malloc);
 
 		wsi->truncated_send_allocation = real_len - n;
 		wsi->truncated_send_malloc = lws_malloc(real_len - n);
 		if (!wsi->truncated_send_malloc) {
 			lwsl_err("truncated send: unable to malloc %d\n",
-							  real_len - n);
+				 real_len - n);
 			return -1;
 		}
 	}
@@ -249,17 +243,15 @@ handle_truncated_send:
 LWS_VISIBLE int lws_write(struct lws *wsi, unsigned char *buf,
 			  size_t len, enum lws_write_protocol protocol)
 {
-	int n;
-	int pre = 0;
-	int post = 0;
 	int masked7 = wsi->mode == LWS_CONNMODE_WS_CLIENT;
-	unsigned char *dropmask = NULL;
 	unsigned char is_masked_bit = 0;
-	size_t orig_len = len;
+	unsigned char *dropmask = NULL;
 	struct lws_tokens eff_buf;
+	int post = 0, pre = 0, n;
+	size_t orig_len = len;
 
 	if (len == 0 && protocol != LWS_WRITE_CLOSE &&
-		     protocol != LWS_WRITE_PING && protocol != LWS_WRITE_PONG) {
+	    protocol != LWS_WRITE_PING && protocol != LWS_WRITE_PONG) {
 		lwsl_warn("zero length lws_write attempt\n");
 		return 0;
 	}
@@ -318,7 +310,6 @@ LWS_VISIBLE int lws_write(struct lws *wsi, unsigned char *buf,
 
 	switch (wsi->ietf_spec_revision) {
 	case 13:
-
 		if (masked7) {
 			pre += 4;
 			dropmask = &buf[0 - pre];
@@ -525,8 +516,8 @@ LWS_VISIBLE int lws_serve_http_file_fragment(struct lws_context *context,
 
 		if (wsi->truncated_send_len) {
 			if (lws_issue_raw(wsi, wsi->truncated_send_malloc +
-					wsi->truncated_send_offset,
-						 wsi->truncated_send_len) < 0) {
+					  wsi->truncated_send_offset,
+					  wsi->truncated_send_len) < 0) {
 				lwsl_info("closing from lws_serve_http_file_fragment\n");
 				return -1;
 			}
@@ -537,14 +528,16 @@ LWS_VISIBLE int lws_serve_http_file_fragment(struct lws_context *context,
 			goto all_sent;
 
 		compatible_file_read(n, wsi->u.http.fd, context->service_buffer,
-					       sizeof(context->service_buffer));
+				     sizeof(context->service_buffer));
 		if (n < 0)
 			return -1; /* caller will close */
 		if (n) {
-			lws_set_timeout(wsi, PENDING_TIMEOUT_HTTP_CONTENT, AWAITING_TIMEOUT);
+			lws_set_timeout(wsi, PENDING_TIMEOUT_HTTP_CONTENT,
+					AWAITING_TIMEOUT);
 			wsi->u.http.filepos += n;
 			m = lws_write(wsi, context->service_buffer, n,
-					       wsi->u.http.filepos == wsi->u.http.filelen ? LWS_WRITE_HTTP_FINAL : LWS_WRITE_HTTP);
+				      wsi->u.http.filepos == wsi->u.http.filelen ?
+					LWS_WRITE_HTTP_FINAL : LWS_WRITE_HTTP);
 			if (m < 0)
 				return -1;
 
@@ -555,7 +548,7 @@ LWS_VISIBLE int lws_serve_http_file_fragment(struct lws_context *context,
 		}
 all_sent:
 		if (!wsi->truncated_send_len &&
-				wsi->u.http.filepos == wsi->u.http.filelen) {
+		     wsi->u.http.filepos == wsi->u.http.filelen) {
 			wsi->state = WSI_STATE_HTTP;
 
 			/* we might be in keepalive, so close it off here */
diff --git a/lib/service.c b/lib/service.c
index dd161a4c75893adc68974a9e44d7169f5fc797ca..52154f499b06e8595cb30b1884824c81672cf35d 100644
--- a/lib/service.c
+++ b/lib/service.c
@@ -39,22 +39,20 @@ lws_calllback_as_writeable(struct lws_context *context, struct lws *wsi)
 	}
 	lwsl_info("%s: %p (user=%p)\n", __func__, wsi, wsi->user_space);
 	return user_callback_handle_rxflow(wsi->protocol->callback, context,
-			wsi, (enum lws_callback_reasons) n,
-						      wsi->user_space, NULL, 0);
+					   wsi, (enum lws_callback_reasons) n,
+					   wsi->user_space, NULL, 0);
 }
 
 int
 lws_handle_POLLOUT_event(struct lws_context *context, struct lws *wsi,
 			 struct lws_pollfd *pollfd)
 {
-	int n;
+	int write_type = LWS_WRITE_PONG;
 	struct lws_tokens eff_buf;
 #ifdef LWS_USE_HTTP2
 	struct lws *wsi2;
 #endif
-	int ret;
-	int m;
-	int write_type = LWS_WRITE_PONG;
+	int ret, m, n;
 
 	/* pending truncated sends have uber priority */
 
@@ -100,11 +98,9 @@ lws_handle_POLLOUT_event(struct lws_context *context, struct lws *wsi,
 		if (wsi->u.ws.payload_is_close)
 			write_type = LWS_WRITE_CLOSE;
 
-		n = lws_write(wsi, 
-				&wsi->u.ws.ping_payload_buf[
+		n = lws_write(wsi, &wsi->u.ws.ping_payload_buf[
 					LWS_SEND_BUFFER_PRE_PADDING],
-					wsi->u.ws.ping_payload_len,
-							       write_type);
+			      wsi->u.ws.ping_payload_len, write_type);
 		if (n < 0)
 			return -1;
 
@@ -361,19 +357,19 @@ int lws_rxflow_cache(struct lws *wsi, unsigned char *buf, int n, int len)
 LWS_VISIBLE int
 lws_service_fd(struct lws_context *context, struct lws_pollfd *pollfd)
 {
-	struct lws *wsi;
-	int n, m;
-	lws_sockfd_type mfd;
 #if LWS_POSIX
 	int listen_socket_fds_index = 0;
 #endif
-	time_t now;
-	int timed_out = 0;
 	lws_sockfd_type our_fd = 0;
-	char draining_flow = 0;
-	int more;
 	struct lws_tokens eff_buf;
 	unsigned int pending = 0;
+	char draining_flow = 0;
+	lws_sockfd_type mfd;
+	int timed_out = 0;
+	struct lws *wsi;
+	time_t now;
+	int n, m;
+	int more;
 
 #if LWS_POSIX
 	if (context->listen_service_fd)
@@ -407,11 +403,10 @@ lws_service_fd(struct lws_context *context, struct lws_pollfd *pollfd)
 
 			if (lws_service_timeout_check(context, wsi, now))
 				/* he did time out... */
-				if (mfd == our_fd) {
+				if (mfd == our_fd)
 					/* it was the guy we came to service! */
 					timed_out = 1;
 					/* he's gone, no need to mark as handled */
-				}
 		}
 	}
 
@@ -420,12 +415,12 @@ lws_service_fd(struct lws_context *context, struct lws_pollfd *pollfd)
 		return 0;
 
 	/* just here for timeout management? */
-	if (pollfd == NULL)
+	if (!pollfd)
 		return 0;
 
 	/* no, here to service a socket descriptor */
 	wsi = wsi_from_fd(context, pollfd->fd);
-	if (wsi == NULL)
+	if (!wsi)
 		/* not lws connection ... leave revents alone and return */
 		return 0;
 
@@ -459,7 +454,8 @@ lws_service_fd(struct lws_context *context, struct lws_pollfd *pollfd)
 				 * even with extpoll, we prepared this
 				 * internal fds for listen
 				 */
-				n = lws_poll_listen_fd(&context->fds[listen_socket_fds_index]);
+				n = lws_poll_listen_fd(
+					&context->fds[listen_socket_fds_index]);
 				if (n > 0) { /* there's a conn waiting for us */
 					lws_service_fd(context,
 						&context->
@@ -572,7 +568,6 @@ read:
 drain:
 
 		do {
-
 			more = 0;
 			
 			m = lws_ext_callback_for_each_active(wsi,
@@ -602,8 +597,8 @@ drain:
 		pending = lws_ssl_pending(wsi);
 		if (pending) {
 handle_pending:
-			pending = pending > sizeof(context->service_buffer)?
-				sizeof(context->service_buffer):pending;
+			pending = pending > sizeof(context->service_buffer) ?
+				sizeof(context->service_buffer) : pending;
 			goto read;
 		}
 
@@ -615,7 +610,8 @@ handle_pending:
 #ifdef LWS_NO_SERVER
 			n =
 #endif
-			_lws_rx_flow_control(wsi); /* n ignored, needed for NO_SERVER case */
+			_lws_rx_flow_control(wsi);
+			/* n ignored, needed for NO_SERVER case */
 		}
 
 		break;