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Trimutex
2023-09-26 14:40:09 -05:00
parent 44fb3aa66e
commit 265f5f5649
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test/mt_web_server.cpp
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//====================================================== file = weblite.c =====
//= A super light weight HTTP server =
//=============================================================================
//= Notes: =
//= 1) Compiles for Winsock only since uses Windows threads. Generates =
//= one warning about unreachable code in main. Ignore this warning. =
//= 2) Serves HTML and GIF only. =
//= 3) Sometimes the browser drops a connection when doing a refresh. =
//= This is handled by checking the recv() return code in the function =
//= that handles GETs. =
//= 4) The 404 HTML message does not always display in Explorer. =
//=---------------------------------------------------------------------------=
//= Execution notes: =
//= 1) Execute this program in the directory which will be the root for =
//= all file references (i.e., the directory that is considered at =
//= "public.html"). =
//= 2) Open a Web browser and surf to http://xxx.xxx.xxx.xxx/yyy where =
//= xxx.xxx.xxx.xxx is the IP address or hostname of the machine that =
//= weblite is executing on and yyy is the requested object. =
//= 3) The only output (to stdout) from weblite is a message with the =
//= of the file currently being sent =
//=---------------------------------------------------------------------------=
//= Build: bcc32 weblite.c, cl weblite.c wsock32.lib (or ws2_32.lib) =
//= gcc weblite.c -lsocket -lnsl for BSD =
//=---------------------------------------------------------------------------=
//= Execute: weblite =
//=---------------------------------------------------------------------------=
//= History: KJC (12/29/00) - Genesis (from server.c) =
//= HF (01/25/01) - Ported to multi-platform environment =
//=============================================================================
#define UNIX // WIN for Windows environment, UNIX for BSD or LINUX env.
//----- Include files ---------------------------------------------------------
#include <stdio.h> // Needed for printf()
#include <stdlib.h> // Needed for exit()
#include <string.h> // Needed for strcpy() and strlen()
#include <fcntl.h> // Needed for file i/o constants
#include <sys/stat.h> // Needed for file i/o constants
/* FOR BSD UNIX/LINUX ---------------------------------------------------- */
#ifdef UNIX
#include <sys/types.h> //
#include <netinet/in.h> //
#include <sys/socket.h> //
#include <arpa/inet.h> //
#include <unistd.h>
#endif
/* ------------------------------------------------------------------------ */
/* FOR WIN ---------------------------------------------------------------- */
#ifdef WIN
#include <stddef.h> // Needed for _threadid
#include <process.h> // Needed for _beginthread() and _endthread()
#include <io.h> // Needed for open(), close(), and eof()
#include <windows.h> // Needed for all Winsock stuff
#endif
/* ------------------------------------------------------------------------ */
//----- HTTP response messages ----------------------------------------------
#define OK_IMAGE "HTTP/1.0 200 OK\nContent-Type:image/gif\n\n"
#define OK_TEXT "HTTP/1.0 200 OK\nContent-Type:text/html\n\n"
#define NOTOK_404 "HTTP/1.0 404 Not Found\nContent-Type:text/html\n\n"
#define MESS_404 "<html><body><h1>FILE NOT FOUND</h1></body></html>"
//----- Defines -------------------------------------------------------------
#define BUF_SIZE 4096 // Buffer size (big enough for a GET)
#define PORT_NUM 9080 // Port number for a Web server
//----- Function prototypes -------------------------------------------------
/* FOR WIN --------------------------------------------------------------- */
#ifdef WIN
void handle_get(void *in_arg); // Thread function to handle GET
#endif
/* ----------------------------------------------------------------------- */
/* FOR UNIX/LINUX -------------------------------------------------------- */
#ifdef UNIX
void child_proc(int server_s, int client_s); // Fork function for GET
#endif
/* ----------------------------------------------------------------------- */
//===== modeule main ========================================================
int main(void)
{
/* FOR WIN ------------------------------------------------------------- */
#ifdef WIN
WORD wVersionRequested = MAKEWORD(1, 1); // Stuff for WSA functions
WSADATA wsaData; // Stuff for WSA functions
#endif
/* --------------------------------------------------------------------- */
unsigned int server_s; // Server socket descriptor
struct sockaddr_in server_addr; // Server Internet address
unsigned int client_s; // Client socket descriptor
struct sockaddr_in client_addr; // Client Internet address
struct in_addr client_ip_addr; // Client IP address
socklen_t addr_len; // Internet address length
/* FOR UNIX/LINUX ------------------------------------------------------ */
#ifdef UNIX
int nChild_proc_id; // New child process ID.
#endif
/* --------------------------------------------------------------------- */
/* FOR WIN ------------------------------------------------------------- */
#ifdef WIN
// Initialize winsock
WSAStartup(wVersionRequested, &wsaData);
#endif
/* --------------------------------------------------------------------- */
// Create a socket, fill-in address information, and then bind it
server_s = socket(AF_INET, SOCK_STREAM, 0);
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(PORT_NUM);
server_addr.sin_addr.s_addr = htonl(INADDR_ANY);
bind(server_s, (struct sockaddr *)&server_addr, sizeof(server_addr));
// Main loop to listen, accept, and then spin-off a thread to handle the GET
while (1)
{
// Listen for connections and then accept
listen(server_s, 100);
addr_len = sizeof(client_addr);
client_s = accept(server_s, (struct sockaddr *)&client_addr, &addr_len);
if (client_s == 0)
{
printf("ERROR - Unable to create socket \n");
exit(1);
}
/* FOR UNIX/LINUX ---------------------------------------------------- */
#ifdef UNIX
// Spin-off a child process by fork
nChild_proc_id = fork();
// Separate the parent and child process here ...
if (nChild_proc_id == 0) // if I am a new child, go to the child module.
{
child_proc(server_s, client_s);
}
#endif
/* ------------------------------------------------------------------- */
/* FOR WIN ----------------------------------------------------------- */
#ifdef WIN
// Spin-off a thread to handle this request (pass only client_s)
if (_beginthread(handle_get, 4096, (void *)client_s) < 0)
{
printf("ERROR - Unable to create thread \n");
exit(1);
}
#endif
/* ------------------------------------------------------------------- */
}
/* FOR UNIX/LINUX ------------------------------------------------------ */
#ifdef UNIX
// Close the server socket
close(server_s);
#endif
/* --------------------------------------------------------------------- */
/* FOR WIN ------------------------------------------------------------- */
#ifdef WIN
// Close the server socket and clean-up winsock
printf("this web server is shutting down .....\a\n");
closesocket(server_s);
WSACleanup();
#endif
/* --------------------------------------------------------------------- */
// To make sure this "main" returns an integer.
return (1);
}
/* FOR WIN --------------------------------------------------------------- */
#ifdef WIN
//===========================================================================
//= This is is the thread function to handle the GET =
//= - It is assumed that the request is a GET =
//===========================================================================
void handle_get(void *in_arg)
{
unsigned int client_s; // Client socket descriptor
char in_buf[BUF_SIZE]; // Input buffer for GET resquest
char out_buf[BUF_SIZE]; // Output buffer for HTML response
char *file_name; // File name
unsigned int fh; // File handle
unsigned int buf_len; // Buffer length for file reads
unsigned int retcode; // Return code
// Set client_s to in_arg
client_s = (unsigned int)in_arg;
// Receive the GET request from the Web browser
retcode = recv(client_s, in_buf, BUF_SIZE, 0);
// Handle the GET if there is one (see note #3 in the header)
if (retcode != -1)
{
// Parse out the filename from the GET request
strtok(in_buf, " ");
file_name = strtok(NULL, " ");
// Open the requested file
// - Start at 2nd char to get rid of leading "\"
fh = open(&file_name[1], O_RDONLY | O_BINARY, S_IREAD | S_IWRITE);
// Generate and send the response (404 if could not open the file)
if (fh == -1)
{
printf("File %s not found - sending an HTTP 404 \n", &file_name[1]);
strcpy(out_buf, NOTOK_404);
send(client_s, out_buf, strlen(out_buf), 0);
strcpy(out_buf, MESS_404);
send(client_s, out_buf, strlen(out_buf), 0);
}
else
{
printf("File %s is being sent \n", &file_name[1]);
if (strstr(file_name, ".gif") != NULL)
strcpy(out_buf, OK_IMAGE);
else
strcpy(out_buf, OK_TEXT);
send(client_s, out_buf, strlen(out_buf), 0);
while (!eof(fh))
{
buf_len = read(fh, out_buf, BUF_SIZE);
send(client_s, out_buf, buf_len, 0);
}
close(fh);
}
}
// Close the client socket and end the thread
closesocket(client_s);
_endthread();
}
#endif
/* ----------------------------------------------------------------------- */
/* FOR UNIX/LINUX -------------------------------------------------------- */
#ifdef UNIX
void child_proc(int server_s, int client_s)
{
char in_buf[BUF_SIZE]; // Input buffer for GET resquest
char out_buf[BUF_SIZE]; // Output buffer for HTML response
char *file_name; // File name
unsigned int fh; // File handle
unsigned int buf_len; // Buffer length for file reads
unsigned int retcode; // Return code
// Shut down the parent pipe
close(server_s);
// Receive the GET request from the Web browser
retcode = recv(client_s, in_buf, BUF_SIZE, 0);
// Handle the GET if there is one (see note #3 in the header)
if (retcode != -1)
{
// Parse out the filename from the GET request
strtok(in_buf, " ");
file_name = strtok(NULL, " ");
// Open the requested file
// - Start at 2nd char to get rid of leading "\"
// fh = open(&file_name[1], O_RDONLY | O_BINARY, S_IREAD | S_IWRITE);
fh = open(&file_name[1], O_RDONLY, S_IREAD | S_IWRITE);
// Generate and send the response (404 if could not open the file)
if (fh == -1)
{
printf("File %s not found - sending an HTTP 404 \n", &file_name[1]);
strcpy(out_buf, NOTOK_404);
send(client_s, out_buf, strlen(out_buf), 0);
strcpy(out_buf, MESS_404);
send(client_s, out_buf, strlen(out_buf), 0);
}
else
{
printf("File %s is being sent \n", &file_name[1]);
if (strstr(file_name, ".gif") != NULL)
strcpy(out_buf, OK_IMAGE);
else
strcpy(out_buf, OK_TEXT);
send(client_s, out_buf, strlen(out_buf), 0);
while (fh != EOF)
{
buf_len = read(fh, out_buf, BUF_SIZE);
send(client_s, out_buf, buf_len, 0);
}
close(fh);
}
}
// Shut down my (the child) pipe
close(client_s);
}
#endif
/* ----------------------------------------------------------------------- */
test/multi_threads.cpp
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/* ************************************************************************* *
* *
* Multi.cpp: *
* This is a sample program for multi-threaded applications. *
* *
* As soon as this program starts, the main thread generates two child *
* threads. The two child threads wait for 10 seconds and terminate. *
* *
* While the two child threads are running, the main thread waits. The *
* main thread waits until both threads finish. *
* *
* Compile: *
* In Project->Setting->C/C++->CodeGenartion(in Category) *
* ->Select Multi-threaded for runtime library *
* *
* Coded by: H. Fujinoki *
* September 12, 11:00 AM at Edwardsville, IL *
* *
* ************************************************************************* */
#include <process.h> // for thread system calls (_beginthread, etc.)
#include <windows.h> // for TRUE, FALSE labels
#include <stdio.h> // for printf
#include <time.h> // for clock() and CLK_TCK
/* Global label defenition ------------------------------------------------ */
#define INTERVAL 1 // Transmission interval in seconds
#define REPEATS 50 // Number of child thread's repeats
/* Global Variables ------------------------------------------------------- */
int nChild1_status; // Child thread #1 status
int nChild2_status; // Child thread #2 status
/* Prototypes ------------------------------------------------------------- */
void ChildThread1(void *dummy); // The child thread #1
void ChildThread2(void *dummy); // The child thread #2
/* The MAIN --------------------------------------------------------------- */
void main (void)
{
/* Set the child thread status (TRUE = RUNNING) --- */
nChild1_status = TRUE;
nChild2_status = TRUE;
/* Create and start the two threads --- */
_beginthread (ChildThread1, 0, NULL ); // Start child process #1
_beginthread (ChildThread2, 0, NULL ); // Start child process #2
/* Spin-loop until both threads finish --- */
while ((nChild1_status == TRUE)||(nChild2_status == TRUE))
{ ; }
/* Two threads are now finished --- */
printf("Both child threads are finished ... \n");
printf("The main thread is finishing ... \n");
}
// The Child-Thread #1 ///////////////////////////////////////////////////////
void ChildThread1(void *dummy)
{
/* Child #1 local variable(s) --- */
int i; // Loop counter
/* This thread is started --- */
printf("Child Thread #1 has started ... \n");
/* wait for 10 seconds w/ count down --- */
for (i = 0; i < REPEATS ; i++)
{
/* Wait for 10 seconds --- */
Sleep((clock_t)INTERVAL * CLOCKS_PER_SEC);
/* Display count down --- */
printf("Child #1: %d more second(s) to finish ...\n", REPEATS -i);
}
/* Reset the status flag --- */
nChild1_status = FALSE;
/* Terminate this thread --- */
_endthread();
}
// The Child-Thread #2 ///////////////////////////////////////////////////////
void ChildThread2(void *dummy)
{
/* Child #2 local variable(s) --- */
int i; // Loop counter
/* This thread is started --- */
printf("Child Thread #2 has started ... \n");
/* wait for 10 seconds w/ count down --- */
for (i = 0; i < REPEATS ; i++)
{
/* Wait for 10 seconds --- */
Sleep((clock_t)INTERVAL * CLOCKS_PER_SEC);
/* Display count down --- */
printf("Child #2: %d more second(s) to finish ...\n", REPEATS -i);
}
/* Reset the status flag --- */
nChild2_status = FALSE;
/* Terminate this thread --- */
_endthread();
}
// THE END OF LINES //////////////////////////////////////////////////////////