#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/wait.h>
#include <signal.h>
#include <pthread.h>
#define MYPORT 8080 // the port users will be connecting to
#define BACKLOG 10 // how many pending connections queue will hold
#define MAXDATASIZE 1000
//*********************************************************************
void sigchld_handler(int s)
{
while(wait(NULL) > 0);
}
//*********************************************************************
//---------------------------httpRequest Method------------------------
void* httpRequest(void* data)
{
int me = *((int*)data);
char buf[MAXDATASIZE],requestLine[100],tmp[20];
int a=0,k=0,b=0,received=-1;
//Get the Header lines from the client
if ((received = recv(me, buf, 100, 0)) < 0)
{
perror("Failed to receive initial bytes from client");
}
buf[received-1]='\0';
//Extract the request line.
while(buf[a]!= '\n')
requestLine[a]=buf[a++];
//Get the "GET" word.
while(requestLine[b] != ' ')
tmp[b]= requestLine[b++];
if (strcmp(tmp,"GET")==0)
{
//Extract the file name.
char *fileName,*fl1,*fl2;
fl1=strpbrk(requestLine,"/");
fl2=strtok(fl1," ");
fileName=strpbrk(fl2,"/");
//Document root
char document_root[10]="./html";
//Prepend the path of the Document root so that the
//file request is within the Document root
if(strcmp(fileName,"/")==0)
strcpy(fileName,strcat(document_root,"/index.html"));
else
strcpy(fileName,strcat(document_root,fileName));
//Open the requested file.
FILE *fp;
int file_exist=1;
fp=fopen(fileName, "r");
if (fp==NULL)
file_exist=0;
//Extract the extension and assign content type of that file-----------------------------------------------------------------
char *filetype;
char *type;
int s='.';
filetype=strrchr(fileName,s);
if((strcmp(filetype,".htm"))==0 || (strcmp(filetype,".html"))==0)
type="text/html";
else if((strcmp(filetype,".jpg"))==0)
type="image/jpeg";
else if(strcmp(filetype,".gif")==0)
type="image/gif";
else if(strcmp(filetype,".txt")==0)
type="text/plain";
else if((strcmp(filetype,".ram")==0) || (strcmp(filetype,".ra")==0))
type="audio/x-pn-realaudio";
else
type="application/octet-stream";
char statusLine[100]="HTTP/1.0";
char contentTypeLine[100]="Content-type: ";
char entityBody[100]="<html>";
if(file_exist==1)
{
//send status line and the content type line
strcpy(statusLine,strcat(statusLine,"200 OK"));
strcpy(statusLine,strcat(statusLine,"\r\n"));
strcpy(contentTypeLine,strcat(contentTypeLine,type));
strcpy(contentTypeLine,strcat(contentTypeLine,"\r\n"));
}
else
{
strcpy(statusLine,strcat(statusLine,"404 Not Found"));
strcpy(statusLine,strcat(statusLine,"\r\n"));
//send a blank line to indicate the end of the header lines
strcpy(contentTypeLine,strcat(contentTypeLine,"NONE"));
strcpy(contentTypeLine,strcat(contentTypeLine,"\r\n"));
//send the entity body
strcpy(entityBody,strcat(entityBody,"<HEAD><TITLE>404 Not Found</TITLE></HEAD>"));
strcpy(entityBody,strcat(entityBody,"<BODY>Not Found</BODY></html>"));
strcpy(entityBody,strcat(entityBody,"\r\n"));
}
//send the status line and content type line.
if ((send(me, statusLine,strlen(statusLine), 0) == -1) ||
(send(me, contentTypeLine, strlen(contentTypeLine),0) == -1) ||
(send(me,"\r\n", strlen("\r\n"), 0) == -1))
perror("Failed to send bytes to client");
//send the entity body
if (file_exist)
{
wchar_t read_char[1];
while((read_char[0]=fgetc(fp))!=EOF)
{
if(send(me,read_char,sizeof(char),0) == -1)
perror("Failed to send bytes to client");
}
}
else
{
if (send(me, entityBody, 100, 0) == -1)
perror("Failed to send bytes to client");
}
close(me); // Close the connection.
pthread_exit(NULL); //Existing from the threads.
}
else
printf("Warning message\n");
}
//****************************************************************************************************************
//Main Method------------------------------------------------------------------
int main (void)
{
int sockfd, new_fd; // listen on sock_fd, new connection on new_fd
struct sockaddr_in my_addr; // my address information
struct sockaddr_in their_addr; // connector's address information
int sin_size;
struct sigaction sa;
int yes=1;
pthread_t p_thread[3000];
int thr_id,i=0;
//Create the parent socket.
if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
perror("socket");
exit(1);
}
//Handy debugging trick that lets
if (setsockopt(sockfd,SOL_SOCKET,SO_REUSEADDR,&yes,sizeof(int)) == -1) {
perror("setsockopt");
exit(1);
}
//Build the server's Inernet address.
// bzero((char *) &my_addr, sizeof(my_addr));
my_addr.sin_family = AF_INET; // host byte order
my_addr.sin_port = htons(MYPORT); // short, network byte order
my_addr.sin_addr.s_addr = INADDR_ANY; // automatically fill with my IP
memset(&(my_addr.sin_zero), '\0', 8); // zero the rest of the struct
//Binding
if (bind(sockfd, (struct sockaddr *)&my_addr, sizeof(struct sockaddr))== -1) {
perror("bind");
exit(1);
}
//Make this socket ready to accept connection requests.
if (listen(sockfd, BACKLOG) == -1) {
perror("listen");
exit(1);
}
sa.sa_handler = sigchld_handler; // read all dead processes
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESTART;
if (sigaction(SIGCHLD, &sa, NULL) == -1) {
perror("sigaction");
exit(1);
}
while(1)
{ // main accept() loop
sin_size = sizeof(struct sockaddr_in);
if ((new_fd = accept(sockfd, (struct sockaddr *)&their_addr,&sin_size)) == -1) {
perror("accept");
continue;
}
//Creates threads.
thr_id = pthread_create(&p_thread[i++],NULL,httpRequest,(void*)&new_fd);
}
return 0;
}
MULTI THREADED WEB SERVER IN C SOURCE CODE(LODE PAGES FROM GIVEN FOLDER LOCATION AND PUBLISH THEM)
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If I remember correctly this suppose to be C codes?
ReplyDeleteThanks 4 comments. :)
ReplyDeletehow to run this code in linux??
ReplyDeletejust compile it and run as any other c code.
ReplyDeleteafter compiling and running, how do I use the web server through a browser. process html
ReplyDeletePut you html files to folder named /html and run program.
ReplyDeleteVery descriptive post, I enjoyed that bit. Will there
ReplyDeletebe a part 2?