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#include "net.h"
#include <arpa/inet.h>
#include <errno.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <unistd.h>
int net_init_server(int port)
{
struct sockaddr_in addr;
int rc;
int sockopts = 1;
int sockfd;
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd == -1) {
perror("Failed to create server socket");
return -1;
}
/*
* Set SO_REUSEADDR to allow the port to be reused, preventing errors
* when quickly starting and restarting the server. SO_REUSEPORT and
* SO_NOSIGPIPE would also be nice, but they are not supported on Linux.
*/
setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &sockopts, sizeof(int));
memset(&addr, 0, sizeof(struct sockaddr_in));
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = htonl(INADDR_ANY);
addr.sin_port = htons(port);
rc = bind(sockfd, (struct sockaddr*)&addr, sizeof(struct sockaddr));
if (rc == -1) {
perror("Failed to bind server socket");
return -1;
}
rc = listen(sockfd, CFWS_NET_MAXCONN);
if (rc == -1) {
perror("Failed to listen on server socket");
return -1;
}
return sockfd;
}
int net_next_request(int serverfd, int *clientfd, struct http_request *req)
{
int connfd;
char readbuf[CFWS_NET_MAXREAD];
connfd = accept(serverfd, NULL, NULL);
if (connfd == -1) {
/* EINVAL most likely indicates that the server socket was
* closed due to the user pressing Ctrl+C. */
if (errno == EINVAL)
return 1;
perror("cfws: accept");
return -1;
}
/* Read and parse the HTTP request */
memset(readbuf, 0, CFWS_NET_MAXREAD);
read(connfd, readbuf, CFWS_NET_MAXREAD - 1);
*req = http_parse_request(readbuf);
*clientfd = connfd;
return 0;
}
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