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#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#if EMSCRIPTEN
#include <emscripten.h>
#endif
#define EXPECTED_BYTES 5
int sockfd = -1;
void finish(int result) {
close(sockfd);
exit(result);
}
void loop() {
fd_set fdw;
int res;
// Make sure that sockfd has actually finished connecting
// and is ready to read.
FD_ZERO(&fdw);
FD_SET(sockfd, &fdw);
res = select(64, NULL, &fdw, NULL, NULL);
if (res == -1) {
perror("select failed");
finish(EXIT_FAILURE);
} else if (!FD_ISSET(sockfd, &fdw)) {
return;
}
char data[] = "hello from the other siide\n";
printf("send..\n");
#if TEST_FILE_OPS
res = write(sockfd, data, sizeof(data));
#else
res = send(sockfd, data, sizeof(data), 0);
#endif
if (res == -1) {
if (errno != EAGAIN) {
perror("send error");
finish(EXIT_FAILURE);
}
return;
}
finish(EXIT_SUCCESS);
}
int main() {
struct sockaddr_in addr;
int res;
#if !TEST_DGRAM
sockfd = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
#else
sockfd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
#endif
if (sockfd == -1) {
perror("cannot create socket");
finish(EXIT_FAILURE);
}
fcntl(sockfd, F_SETFL, O_NONBLOCK);
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_port = htons(SOCKK);
if (inet_pton(AF_INET, "127.0.0.1", &addr.sin_addr) != 1) {
perror("inet_pton failed");
finish(EXIT_FAILURE);
}
res = connect(sockfd, (struct sockaddr *)&addr, sizeof(addr));
if (res == -1 && errno != EINPROGRESS) {
perror("connect failed");
finish(EXIT_FAILURE);
}
emscripten_set_main_loop(loop, 0, 0);
return EXIT_SUCCESS;
}
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