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WIP Impl. receiving and printing received ASCII

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This commit is contained in:
Stephen Seo 2024-08-29 16:00:49 +09:00
parent ab05751888
commit 2bfca849fa
2 changed files with 50 additions and 4 deletions
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7
src/constants.h Normal file
View file

@ -0,0 +1,7 @@
#ifndef SEODISPARATE_COM_C_SIMPLE_HTTP_CONSTANTS_H_
#define SEODISPARATE_COM_C_SIMPLE_HTTP_CONSTANTS_H_
#define C_SIMPLE_HTTP_SLEEP_NANOS 1000000
#define C_SIMPLE_HTTP_RECV_BUF_SIZE 1024
#endif

47
src/main.c
View file

@ -4,8 +4,12 @@
#include <stdio.h>
// Unix includes.
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>
#include <signal.h>
#include <time.h>
#include <errno.h>
// Local includes.
#include "arg_parse.h"
@ -13,8 +17,7 @@
#include "tcp_socket.h"
#include "signal_handling.h"
#include "globals.h"
#define C_SIMPLE_HTTP_SLEEP_NANOS 1000000
#include "constants.h"
int main(int argc, char **argv) {
Args args = parse_args(argc, argv);
@ -27,12 +30,48 @@ int main(int argc, char **argv) {
struct timespec sleep_time;
sleep_time.tv_sec = 0;
sleep_time.tv_nsec = C_SIMPLE_HTTP_SLEEP_NANOS;
struct sockaddr_in6 peer_info;
memset(&peer_info, 0, sizeof(struct sockaddr_in6));
peer_info.sin6_family = AF_INET6;
signal(SIGINT, C_SIMPLE_HTTP_handle_sigint);
unsigned char recv_buf[C_SIMPLE_HTTP_RECV_BUF_SIZE];
int ret;
ssize_t read_ret;
socklen_t socket_len;
while (C_SIMPLE_HTTP_KEEP_RUNNING) {
nanosleep(&sleep_time, NULL);
socket_len = sizeof(struct sockaddr_in6);
ret = accept(tcp_socket, (struct sockaddr *)&peer_info, &socket_len);
if (ret == -1 && (errno == EAGAIN || errno == EWOULDBLOCK)) {
// No connecting peers, do nothing.
} else if (ret == -1) {
printf("WARNING: accept: errno %d\n", errno);
} else if (ret >= 0) {
// Received connection, handle it.
int connection_fd = ret;
read_ret = read(connection_fd, recv_buf, C_SIMPLE_HTTP_RECV_BUF_SIZE);
// DEBUG print received buf.
// TODO Validate request and send response.
for (unsigned int idx = 0; idx < C_SIMPLE_HTTP_RECV_BUF_SIZE && idx < read_ret; ++idx) {
if (recv_buf[idx] >= 0x20 && recv_buf[idx] <= 0x7E) {
printf("%c", recv_buf[idx]);
} else {
break;
}
}
puts("");
close(connection_fd);
} else {
printf("WARNING: accept: Unknown invalid state!\n");
}
#ifndef NDEBUG
printf(".");
fflush(stdout);
//printf(".");
//fflush(stdout);
#endif
}