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[ws] Add function tracing to websocket module
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Signed-off-by: Geoff Gustafson <geoff@linux.intel.com>
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@grgustaf
grgustaf committed Sep 11, 2017
1 parent 772cf78 commit a510681
Showing 1 changed file with 43 additions and 0 deletions.
43 changes: 43 additions & 0 deletions src/zjs_web_sockets.c
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Original file line number Diff line number Diff line change
@@ -1,5 +1,11 @@
// Copyright (c) 2017, Intel Corporation.

// enable to use function tracing for debug purposes
#if 0
#define USE_FTRACE
static char FTRACE_PREFIX[] = "net";
#endif

// C includes
#include <errno.h>
#include <random.h>
Expand Down Expand Up @@ -116,6 +122,7 @@ static char magic[] = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
static inline ws_connection_t *find_connection(server_handle_t *server_h,
struct net_context *context)
{
FTRACE("server_h = %p, context = %p\n", server_h, context);
return ZJS_LIST_FIND(ws_connection_t, server_h->connections, tcp_sock,
context);
}
Expand All @@ -140,6 +147,8 @@ typedef struct error_desc {
static error_desc_t create_error_desc(u32_t error_id, jerry_value_t this,
jerry_value_t function_obj)
{
FTRACE("error_id = %d, this = %p, func = %p\n\n", error_id, (void *)this,
(void *)function_obj);
error_desc_t desc;
desc.error_id = error_id;
desc.this = this;
Expand All @@ -155,6 +164,7 @@ static void handle_error_arg(void *unused, jerry_value_t argv[], u32_t *argc,
// effects: creates an error object with the corresponding text, clears
// the error flag, and sets this as the first arg; the error
// value must be released later (e.g. zjs_release_args)
FTRACE("buffer = %p, bytes = %d\n", buffer, bytes);
if (bytes != sizeof(error_desc_t)) {
DBG_PRINT("invalid data in handle_error_arg");
return;
Expand All @@ -173,6 +183,7 @@ static void handle_error_arg(void *unused, jerry_value_t argv[], u32_t *argc,
static void emit_error(jerry_value_t obj, const char *format, ...)
{
// effects: emits an error event on obj w/ formatted string message
FTRACE("obj = %p\n", (void *)obj);
const int LEN = 128;
char buf[LEN];
va_list args;
Expand All @@ -188,6 +199,7 @@ static void emit_error(jerry_value_t obj, const char *format, ...)
// a zjs_event_free callback
static void free_server(void *native)
{
FTRACE("native = %p\n", native);
// effects: free up the server handle when it goes out of scope in JS
server_handle_t *handle = (server_handle_t *)native;
if (handle) {
Expand All @@ -202,6 +214,7 @@ static void free_server(void *native)
*/
static jerry_value_t push_array(jerry_value_t array, jerry_value_t val)
{
FTRACE("array = %p, val = %p\n", (void *)array, (void *)val);
if (!jerry_value_is_array(array)) {
jerry_value_t new = jerry_create_array(1);
jerry_set_property_by_index(new, 0, val);
Expand All @@ -222,6 +235,8 @@ static jerry_value_t push_array(jerry_value_t array, jerry_value_t val)
static inline void pkt_sent(struct net_context *context, int status,
void *token, void *user_data)
{
FTRACE("context = %p, status = %d, token = %p, user_data = %p\n",
context, status, token, user_data);
static int first = 1;
if (first) {
DBG_PRINT("TX Thread ID: %p\n", (void *)k_current_get());
Expand All @@ -232,6 +247,7 @@ static inline void pkt_sent(struct net_context *context, int status,

static void tcp_send(struct net_context *context, void *data, u32_t len)
{
FTRACE("context = %p, data = %p, len = %d\n", context, data, len);
struct net_pkt *send_pkt;
send_pkt = net_pkt_get_tx(context, K_NO_WAIT);
if (!send_pkt) {
Expand Down Expand Up @@ -264,6 +280,7 @@ static void tcp_send(struct net_context *context, void *data, u32_t len)
// generate an accept key given an input key
static void generate_key(char *key, u32_t len, char *output, u32_t olen)
{
FTRACE("key = '%s', len = %d, olen = %d\n", key, len, olen);
u32_t concat_size = strlen(key) + strlen(magic) + 1;
char *concat = zjs_malloc(concat_size);
if (!concat) {
Expand All @@ -285,6 +302,7 @@ static void generate_key(char *key, u32_t len, char *output, u32_t olen)
// dump/print a WS packets binary information
static void dump_packet(ws_packet_t *packet)
{
FTRACE("packet = %p\n", packet);
ZJS_PRINT("FIN= 0x%02x\n", packet->fin);
ZJS_PRINT("RSV1= 0x%02x\n", packet->rsv1);
ZJS_PRINT("RSV2= 0x%02x\n", packet->rsv2);
Expand All @@ -303,6 +321,7 @@ static void dump_packet(ws_packet_t *packet)
// dump an array of bytes, formatted (hex on left, ascii on right)
static void dump_bytes(const char *tag, u8_t *data, u32_t len)
{
FTRACE("tag = '%s', data = %p, len = %d\n", tag, data, len);
if (tag) {
ZJS_PRINT("%s:\n", tag);
} else {
Expand Down Expand Up @@ -338,6 +357,8 @@ static void dump_bytes(const char *tag, u8_t *data, u32_t len)
static int encode_packet(ws_packet_type type, u8_t mask, void *payload,
u16_t len, u8_t *out)
{
FTRACE("type = %d, mask = %d, payload = %p, len = %d\n", (u32_t)type,
(u32_t)mask, payload, (u32_t)len);
u8_t mask_offset = 2;
u8_t byte1 = 0;
// FIN bit
Expand Down Expand Up @@ -387,6 +408,7 @@ static int encode_packet(ws_packet_type type, u8_t mask, void *payload,
// Note: packet->payload must be freed after use
static int decode_packet(ws_packet_t *packet, u8_t *data, u32_t len)
{
FTRACE("packet = %p, data = %p, len = %d\n", packet, data, len);
u32_t mask_offset = 2;
u8_t byte1 = data[0];
u8_t byte2 = data[1];
Expand Down Expand Up @@ -442,6 +464,7 @@ static int decode_packet(ws_packet_t *packet, u8_t *data, u32_t len)
static void consume_data(ws_connection_t *con, u16_t len)
{
// effects: mark len bytes of data as read in the connection
FTRACE("con = %p, len = %d\n", con, (u32_t)len);
con->rptr += len;
if (con->rptr == con->wptr) {
DBG_PRINT("all data consumed, reseting read buffer\n");
Expand All @@ -454,6 +477,7 @@ static void trigger_data(void *h, jerry_value_t argv[], u32_t *argc,
const char *buffer, u32_t bytes)
{
// requires: buffer contains 2-byte length
FTRACE("h = %p, buffer = %p, bytes = %d\n", h, buffer, bytes);
ws_connection_t *con = (ws_connection_t *)h;

u16_t len = *(u16_t *)buffer;
Expand All @@ -471,6 +495,7 @@ static void trigger_data(void *h, jerry_value_t argv[], u32_t *argc,
static void pre_close_connection(void *handle, jerry_value_t argv[],
u32_t *argc, const char *buffer, u32_t length)
{
FTRACE("handle = %p, buffer = %p, length = %d\n", handle, buffer, length);
jerry_value_t code = jerry_create_number(*((int*)buffer));
jerry_value_t reason = jerry_create_string(buffer + sizeof(int));

Expand All @@ -482,6 +507,7 @@ static void pre_close_connection(void *handle, jerry_value_t argv[],
// a zjs_post_emit callback
static void close_connection(void *h, jerry_value_t argv[], u32_t argc)
{
FTRACE("h = %p, argc = %d\n", h, argc);
ws_connection_t *con = (ws_connection_t *)h;

ZJS_LIST_REMOVE(ws_connection_t, con->server_h->connections, con);
Expand All @@ -503,6 +529,7 @@ static void close_connection(void *h, jerry_value_t argv[], u32_t argc)
static void process_packet(ws_connection_t *con, u8_t *data, u32_t len)
{
// requires: expects to be called from main thread; emits events directly
FTRACE("con = %p, data = %p, len = %d\n", con, data, len);
ws_packet_t *packet = zjs_malloc(sizeof(ws_packet_t));
if (!packet) {
ERR_PRINT("allocation failed\n");
Expand Down Expand Up @@ -600,21 +627,25 @@ static ZJS_DECL_FUNC_ARGS(ws_send_data, ws_packet_type type)

static ZJS_DECL_FUNC(ws_ping)
{
FTRACE_JSAPI;
return ws_send_data(function_obj, this, argv, argc, WS_PACKET_PING);
}

static ZJS_DECL_FUNC(ws_pong)
{
FTRACE_JSAPI;
return ws_send_data(function_obj, this, argv, argc, WS_PACKET_PONG);
}

static ZJS_DECL_FUNC(ws_send)
{
FTRACE_JSAPI;
return ws_send_data(function_obj, this, argv, argc, WS_PACKET_TEXT_DATA);
}

static ZJS_DECL_FUNC(ws_terminate)
{
FTRACE_JSAPI;
GET_WS_HANDLE_JS(this, con);
DBG_PRINT("closing connection\n");
close_connection(con, NULL, 0);
Expand All @@ -623,6 +654,7 @@ static ZJS_DECL_FUNC(ws_terminate)

static jerry_value_t create_ws_connection(ws_connection_t *con)
{
FTRACE("con = %p\n", con);
// FIXME: this should be using a prototype
jerry_value_t conn = zjs_create_object();
zjs_obj_add_function(conn, ws_send, "send");
Expand All @@ -649,6 +681,7 @@ typedef struct {
// a zjs_deferred_work callback
static void receive_packet(const void *buffer, u32_t length)
{
FTRACE("buffer = %p, length = %d\n", buffer, length);
if (length != sizeof(receive_packet_t)) {
// shouldn't happen so make it a debug print
DBG_PRINT("Error: Unexpected data!\n");
Expand Down Expand Up @@ -800,6 +833,9 @@ static void tcp_received(struct net_context *context,
int status,
void *user_data)
{
// requires: called from RX thread, use caution
FTRACE("context = %p, pkt = %p, status = %d, user_data = %p\n", context,
pkt, status, user_data);
server_handle_t *server_h = (server_handle_t *)user_data;
ws_connection_t *con = find_connection(server_h, context);

Expand Down Expand Up @@ -836,6 +872,7 @@ static void tcp_received(struct net_context *context,
static void post_accept_handler(void *handle, jerry_value_t ret_val)
{
// requires: expects to be called from main thread; emits events directly
FTRACE("handle = %p, ret_val = %p\n", handle, (void *)ret_val);
ws_connection_t *con = (ws_connection_t *)handle;
if (!jerry_value_is_string(ret_val)) {
DBG_PRINT("no protocol returned\n");
Expand Down Expand Up @@ -888,6 +925,7 @@ typedef struct {
// a zjs_deferred_work callback
static void accept_connection(const void *buffer, u32_t length)
{
FTRACE("buffer = %p, length = %d\n", buffer, length);
// FIXME: replace deferred calls below; no longer needed
if (length != sizeof(accept_connection_t)) {
// shouldn't happen so make it a debug print
Expand Down Expand Up @@ -934,6 +972,9 @@ static void tcp_accepted(struct net_context *context,
int error,
void *user_data)
{
// requires: called from RX thread, use caution
FTRACE("context = %p, addr = %p, addrlen = %d, error = %d, userdata = %p\n",
context, addr, addrlen, error, user_data);
#ifdef DEBUG_BUILD
static int first = 1;
if (first) {
Expand Down Expand Up @@ -1045,6 +1086,7 @@ static ZJS_DECL_FUNC(ws_server)

jerry_value_t zjs_ws_init()
{
FTRACE("\n");
zjs_net_config_default();

jerry_value_t ws = zjs_create_object();
Expand All @@ -1055,4 +1097,5 @@ jerry_value_t zjs_ws_init()

void zjs_ws_cleanup()
{
FTRACE("\n");
}

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