/*Handle Client Request Function
Variable Definition:
-- client_socket: socket connected to the client
Return Value: NULL
*/
void handleClientRequest(int client_socket) {
FILE *channel; //file stream for client socket
char request_line[STRING_SIZE]; //client request line
char *return_value; //each line header pointer
//Initialize request_line buffer
memset(request_line, 0, STRING_SIZE);
//Create an input stream from the socket
channel = fdopen(client_socket, "r");
if (channel == NULL) {
dieWithSystemMessage("fdopen() failed");
}
//Get client Request Line (Jump the blank line)
do {
return_value = fgets(request_line, STRING_SIZE, channel);
} while (syntaxChecking(return_value, BLANK_LINE));
//Output the client_socket id and Request Line
printf("Got a call on %d: request = %s", client_socket, request_line);
//Get client Header Lines & Response the client request
respondClientRequest(request_line, getHeaderLines(channel), client_socket);
//Close client socket
close(client_socket);
//Close file stream
fclose(channel);
return;
}
void sendRemainingHeaderLines()
{
if (!headerLines)
return;
unsigned which = sentHeaderLines->scanInvert(0, false);
if (which < subFiles)
{
CMessageBuffer msgMb;
bool someLeft=false;
do
{
msgMb.append(which);
unsigned &remaining = getHeaderLines(which);
if (0 != remaining)
someLeft = true;
msgMb.append(remaining);
which = sentHeaderLines->scanInvert(which+1, false);
}
while (which < subFiles);
if (someLeft)
queryJobChannel().queryJobComm().send(msgMb, queryJobChannel().queryMyRank()+1, mpTag);
else
sendAllDone();
}
}
/*Handle Server Response Function
Variable Definition:
-- widget: window widget
-- client_socket: socket connected to the server
Return value: if handle server response successful return true, else return false
*/
bool handleServerResponse(GtkWidget *widget, int client_socket){
RTSP_HEADER *header; //_rtsp_header structure header pointer
FILE *channel; //file stream for client socket
char response_line[STRING_SIZE]; //server response line
char version[STRING_SIZE]; //rtsp version field: RTSP/1.0
char status_code[NUMBER_SIZE]; //rtsp response status code
char status_message[STRING_SIZE]; //rtsp response status message
char field_value[HALFBUF_SIZE]; //field value string
char *content; //rtsp response content
char *p; //string pointer
int count; //counter
//Initialize response_line, version, status_code, status_message, and field_value buffer
memset(response_line, 0, STRING_SIZE);
memset(version, 0, STRING_SIZE);
memset(status_code, 0, NUMBER_SIZE);
memset(status_message, 0, STRING_SIZE);
memset(field_value, 0, HALFBUF_SIZE);
//Create an input stream from the socket
channel = fdopen(client_socket, "r");
if (channel == NULL){
showErrorCallback(widget, "fdopen() failed: unable to create received channel!");
return false;
}
//Get server Response Line
if (fgets(response_line, STRING_SIZE, channel) == NULL){
showErrorCallback(widget, "recv() failed: unable to receive RTSP Response Line!");
return false;
}
//Output the client_socket id and Response Line
printf("Got a call on %d: response = %s", client_socket, response_line);
//Get server Header Lines
header = getHeaderLines(channel);
#ifdef DEBUG
RTSP_HEADER *debug_header_node;
DEBUG_START;
fputs("RTSP response header lines:\n", stdout);
//Output the RTSP response header lines
for (debug_header_node = header->next; debug_header_node != NULL; debug_header_node = debug_header_node->next){
fputs(debug_header_node->field_name, stdout);
fputs(": ", stdout);
fputs(debug_header_node->field_value, stdout);
fputc('\n', stdout);
}
DEBUG_END;
#endif
//Get server response content
content = getResponseContents(channel);
#ifdef DEBUG
DEBUG_START;
fputs("RTSP response content:\n", stdout);
fputs(content, stdout);
DEBUG_END;
#endif
//Get the rtsp version, status code, and status message
sscanf(response_line, "%s%s%s", version, status_code, status_message);
//Test the status code is neither 200 (OK) nor 304 (Not Modified)
if ((strcmp(status_code, "200") != 0) && (strcmp(status_code, "304") != 0)){
showErrorCallback(widget, content);
return false;
}
//Test the session field
if (fieldExist(header, "session", field_value)){
//Set the session id
session_id = atoi(field_value);
}
//Test the transport field
if (fieldExist(header, "transport", field_value)){
//Remove the protocol type, protocol method, client port, and server port
for (count = 0; count < NUMBER_SIZE; count++){
p = splitNameAndValue(field_value, ';');
}
//Get the server rtp port number
splitNameAndValue(p, '=');
//Set the server rtp port number
server_rtp_port = atoi(p);
}
//Close file stream
fclose(channel);
return true;
}
bool handleServerResponse(GtkWidget *widget, int client_socket) {
RTSP_HEADER *header;
FILE *channel;
char response_line[STRING_SIZE];
char version[STRING_SIZE];
char status_code[NUMBER_SIZE];
char status_message[STRING_SIZE];
char field_value[HALFBUF_SIZE];
char *content;
char *p;
int count;
//initialize all the strings to be empty
memset(response_line, 0, STRING_SIZE);
memset(version, 0, STRING_SIZE);
memset(status_code, 0, NUMBER_SIZE);
memset(status_message, 0, STRING_SIZE);
memset(field_value, 0, HALFBUF_SIZE);
//Create an input stream from the socket
channel = fdopen(client_socket, "r");
if (channel == NULL) {
showErrorCallback(widget, "Unable to create received channel!");
return false;
}
//Get server Response Line
if (fgets(response_line, STRING_SIZE, channel) == NULL) {
showErrorCallback(widget, "Unable to receive RTSP Response!");
return false;
}
//Output the client_socket id and Response Line
printf("Call on %d: response = %s", client_socket, response_line);
//Get server Header Lines
header = getHeaderLines(channel);
//Get server response content
content = getResponseContents(channel);
//Get the rtsp version, status code, and status message
sscanf(response_line, "%s%s%s", version, status_code, status_message);
//Test the status code is neither 200 (OK) nor 304 (Not Modified)
if ((strcmp(status_code, "200") != 0) && (strcmp(status_code, "304") != 0)) {
showErrorCallback(widget, content);
return false;
}
//Test the session field
if (fieldExist(header, "session", field_value)) {
//Set the session id
session_id = atoi(field_value);
}
//Test the transport field
if (fieldExist(header, "transport", field_value)) {
//Remove the protocol type, protocol method, client port, and server port
for (count = 0; count < NUMBER_SIZE; count++) {
p = splitNameAndValue(field_value, ';');
}
//Get the server rtp port number
splitNameAndValue(p, '=');
//Set the server rtp port number
server_rtp_port = atoi(p);
}
//Close file stream
fclose(channel);
return true;
}
