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/**
*
* Ulfius Framework example program
*
* This example program implements a websocket
*
* Copyright 2017 Nicolas Mora <mail@babelouest.org>
*
* License MIT
*
*/
#include <string.h>
#include <unistd.h>
#include <inttypes.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <ulfius.h>
#include <u_example.h>
#define PORT "9275"
#define PREFIX_WEBSOCKET "/websocket"
#if defined(U_DISABLE_WEBSOCKET)
int main() {
fprintf(stderr, "Websocket not supported, please recompile ulfius with websocket support\n");
return 1;
}
#else
void websocket_manager_callback(const struct _u_request * request,
struct _websocket_manager * websocket_manager,
void * websocket_manager_user_data) {
if (websocket_manager_user_data != NULL) {
y_log_message(Y_LOG_LEVEL_DEBUG, "websocket_manager_user_data is %s", websocket_manager_user_data);
}
// Send text message without fragmentation
if (ulfius_websocket_wait_close(websocket_manager, 2000) == U_WEBSOCKET_STATUS_OPEN) {
if (ulfius_websocket_send_message(websocket_manager, U_WEBSOCKET_OPCODE_TEXT, o_strlen("Message without fragmentation from client"), "Message without fragmentation from client") != U_OK) {
y_log_message(Y_LOG_LEVEL_ERROR, "Error send message without fragmentation");
}
}
// Send text message with fragmentation
if (ulfius_websocket_wait_close(websocket_manager, 2000) == U_WEBSOCKET_STATUS_OPEN) {
if (ulfius_websocket_send_fragmented_message(websocket_manager, U_WEBSOCKET_OPCODE_TEXT, o_strlen("Message with fragmentation from client"), "Message with fragmentation from client", 5) != U_OK) {
y_log_message(Y_LOG_LEVEL_ERROR, "Error send message with fragmentation");
}
}
// Send ping message
if (ulfius_websocket_wait_close(websocket_manager, 2000) == U_WEBSOCKET_STATUS_OPEN) {
if (ulfius_websocket_send_message(websocket_manager, U_WEBSOCKET_OPCODE_PING, 0, NULL) != U_OK) {
y_log_message(Y_LOG_LEVEL_ERROR, "Error send ping message");
}
}
// Send binary message without fragmentation
if (ulfius_websocket_wait_close(websocket_manager, 2000) == U_WEBSOCKET_STATUS_OPEN) {
if (ulfius_websocket_send_message(websocket_manager, U_WEBSOCKET_OPCODE_BINARY, o_strlen("Message without fragmentation from client"), "Message without fragmentation from client") != U_OK) {
y_log_message(Y_LOG_LEVEL_ERROR, "Error send binary message without fragmentation");
}
}
y_log_message(Y_LOG_LEVEL_DEBUG, "Closing websocket_manager_callback");
}
/**
* websocket_incoming_message_callback
* Read incoming message and prints it on the console
*/
void websocket_incoming_message_callback (const struct _u_request * request,
struct _websocket_manager * websocket_manager,
const struct _websocket_message * last_message,
void * websocket_incoming_message_user_data) {
if (websocket_incoming_message_user_data != NULL) {
y_log_message(Y_LOG_LEVEL_DEBUG, "websocket_incoming_message_user_data is %s", websocket_incoming_message_user_data);
}
y_log_message(Y_LOG_LEVEL_DEBUG, "Incoming message, opcode: 0x%02x, mask: %d, len: %zu", last_message->opcode, last_message->has_mask, last_message->data_len);
if (last_message->opcode == U_WEBSOCKET_OPCODE_TEXT) {
y_log_message(Y_LOG_LEVEL_DEBUG, "text payload '%.*s'", last_message->data_len, last_message->data);
} else if (last_message->opcode == U_WEBSOCKET_OPCODE_BINARY) {
y_log_message(Y_LOG_LEVEL_DEBUG, "binary payload");
}
}
void websocket_onclose_callback (const struct _u_request * request,
struct _websocket_manager * websocket_manager,
void * websocket_onclose_user_data) {
if (websocket_onclose_user_data != NULL) {
y_log_message(Y_LOG_LEVEL_DEBUG, "websocket_onclose_user_data is %s", websocket_onclose_user_data);
o_free(websocket_onclose_user_data);
}
}
int main(int argc, char ** argv) {
struct _u_request request;
struct _u_response response;
struct _websocket_client_handler websocket_client_handler;
char * websocket_user_data = o_strdup("my user data");
char * url = (argc>1&&0==o_strcmp("-https", argv[1]))?"wss://localhost:" PORT PREFIX_WEBSOCKET:"ws://localhost:" PORT PREFIX_WEBSOCKET;
y_init_logs("websocket_client", Y_LOG_MODE_CONSOLE, Y_LOG_LEVEL_DEBUG, NULL, "Starting websocket_client");
ulfius_init_request(&request);
ulfius_init_response(&response);
if (ulfius_set_websocket_request(&request, url, "protocol", "extension") == U_OK) {
request.check_server_certificate = 0;
if (ulfius_open_websocket_client_connection(&request, &websocket_manager_callback, websocket_user_data, &websocket_incoming_message_callback, websocket_user_data, &websocket_onclose_callback, websocket_user_data, &websocket_client_handler, &response) == U_OK) {
y_log_message(Y_LOG_LEVEL_DEBUG, "Wait for user to press <enter> to close the program");
getchar();
ulfius_websocket_client_connection_close(&websocket_client_handler);
y_log_message(Y_LOG_LEVEL_DEBUG, "Websocket closed");
} else {
y_log_message(Y_LOG_LEVEL_ERROR, "Error ulfius_open_websocket_client_connection");
o_free(websocket_user_data);
}
} else {
y_log_message(Y_LOG_LEVEL_ERROR, "Error ulfius_set_websocket_request");
o_free(websocket_user_data);
}
ulfius_clean_request(&request);
ulfius_clean_response(&response);
y_close_logs();
return 0;
}
#endif
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