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#include <stdio.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>
static char buffer[1024 * 1024];
int main(void)
{
struct sockaddr_in sa;
size_t count = 0;
int listen_s;
size_t size;
int rv;
int s;
listen_s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (listen_s < 0)
return 1;
memset(&sa, 0, sizeof(sa));
sa.sin_family = AF_INET;
sa.sin_addr.s_addr = inet_addr("127.0.0.1");
sa.sin_port = htons(8806);
rv = 1;
if (setsockopt(listen_s, SOL_SOCKET, SO_REUSEADDR,
(void *)&rv, sizeof(rv)) < 0) {
return 1;
}
if (bind(listen_s, (struct sockaddr *)&sa, sizeof(sa)) < 0) {
fprintf(stderr, "bind() failed: %s\n", strerror(errno));
return 1;
}
if (listen(listen_s, 1) != 0)
return 1;
s = accept(listen_s, NULL, NULL);
if (s < 0)
return 1;
if (read(s, &size, sizeof(size)) != sizeof(size))
return 1;
if (size >= sizeof(buffer))
size = sizeof(buffer) - 1;
while (count < size) {
rv = read(s, buffer + count, size - count);
if (rv <= 0)
return 1;
count += rv;
}
/* set "received" uprobe here */
printf("recv (%d): received message: %s\n", getpid(), buffer);
close(s);
close(listen_s);
return 0;
}
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