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#define _BSD_SOURCE
#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/ip.h>
#include "../picohttp.h"
int bsdsock_read(size_t count, char *buf, void *data)
{
int fd = *((int*)data);
ssize_t rb = 0;
ssize_t r = 0;
do {
r = read(fd, buf+rb, count-rb);
if( 0 < r ) {
rb += r;
continue;
}
if( !r ) {
break;
}
if( EAGAIN == errno ||
EWOULDBLOCK == errno ) {
usleep(100);
continue;
}
return -3 + errno;
} while( rb < count );
return rb;
}
int bsdsock_write(size_t count, char *buf, void *data)
{
int fd = *((int*)data);
ssize_t wb = 0;
ssize_t w = 0;
do {
w = write(fd, buf+wb, count-wb);
if( 0 < w ) {
wb += w;
continue;
}
if( !w ) {
break;
}
if( EAGAIN == errno ||
EWOULDBLOCK == errno ) {
usleep(100);
continue;
}
return -3 + errno;
} while( wb < count );
return wb;
}
int16_t bsdsock_getch(void *data)
{
char ch;
if( 1 != bsdsock_read(1, &ch, data) )
return -1;
return ch;
}
int bsdsock_putch(char ch, void *data)
{
return bsdsock_write(1, &ch, data);
}
int sockfd = -1;
void bye(void)
{
fputs("exiting\n", stderr);
int const one = 1;
/* allows for immediate reuse of address:port
* after program termination */
setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one));
shutdown(sockfd, SHUT_RDWR);
close(sockfd);
}
int main(int argc, char *argv[])
{
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if( -1 == sockfd ) {
perror("socket");
return -1;
}
if( atexit(bye) ) {
return -1;
}
struct sockaddr_in addr = {
.sin_family = AF_INET,
.sin_port = htons(8000),
.sin_addr = 0
};
if( -1 == bind(sockfd, (struct sockaddr*)&addr, sizeof(addr)) ) {
perror("bind");
return -1;
}
if( -1 == listen(sockfd, 2) ) {
perror("listen");
return -1;
}
for(;;) {
socklen_t addrlen = 0;
int confd = accept(sockfd, (struct sockaddr*)&addr, &addrlen);
if( -1 == confd ) {
if( EAGAIN == errno ||
EWOULDBLOCK == errno ) {
usleep(1000);
continue;
} else {
perror("accept");
return -1;
}
}
struct picohttpIoOps ioops = {
.read = bsdsock_read,
.write = bsdsock_write,
.getch = bsdsock_getch,
.putch = bsdsock_putch,
.data = &confd
};
char const hellostr[] = "Hello World!\n";
write(confd, hellostr, sizeof(hellostr));
shutdown(confd, SHUT_RDWR);
close(confd);
}
return 0;
}
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