SimpleEventBuilder/testing/buffer_size/server_consume_data.cxx

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#include <arpa/inet.h>
#include <csignal>
#include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <netinet/in.h>
#include <sys/select.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/time.h>
#include <errno.h>
int makeSocket() {
int sockfd;
if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
perror("socket failed");
exit(EXIT_FAILURE);
}
return sockfd;
}
void bindSocketPort(int server_fd, int port) {
struct sockaddr_in localAddr;
localAddr.sin_family = AF_INET;
localAddr.sin_addr.s_addr = INADDR_ANY;
localAddr.sin_port = htons(port);
if (bind(server_fd, (struct sockaddr *)&localAddr, sizeof(localAddr)) < 0) {
perror("bind failed");
exit(EXIT_FAILURE);
}
printf("FD %d bound to port %d\n", server_fd, port);
}
void startListening(int server_fd) {
if (listen(server_fd, 3) < 0) {
perror("listen");
exit(EXIT_FAILURE);
}
printf("FD %d listening to new connections\n", server_fd);
}
int acceptConnection(int server_fd) {
int client_fd;
struct sockaddr_in remoteAddr;
size_t addrlen = sizeof(remoteAddr);
if ((client_fd = accept(server_fd, (struct sockaddr *)&remoteAddr, (socklen_t *)&addrlen)) < 0) {
perror("accept");
exit(EXIT_FAILURE);
}
printf("Connection from host %s, port %d, FD %d\n", inet_ntoa(remoteAddr.sin_addr), ntohs(remoteAddr.sin_port), client_fd);
return client_fd;
}
int main(int argc, char* argv[]) {
if (argc != 2) {
printf("Usage: %s portNumber \n", argv[0]);
exit(EXIT_FAILURE);
}
int port = atoi(argv[1]);
printf("Start socket port %d\n", port);
int server_fd = makeSocket();
bindSocketPort(server_fd, port);
startListening(server_fd);
int client_fd = acceptConnection(server_fd);
uint64_t bytes_read = 0;
uint64_t kbytes_read = 0;
while (true) {
char buffer[32 * 1024] = {0};
ssize_t bytes = read(client_fd, &buffer, sizeof(buffer));
bytes_read += static_cast<uint64_t>(bytes);
//printf("tot bytos %lu\n", bytes_read);
if (uint64_t newkb = (bytes_read / 1024) > 0) {
//printf("before: %lu", bytes_read);
bytes_read -= (1024 * newkb);
//printf("after: %lu", bytes_read);
kbytes_read += newkb;
//printf("Read %d kbytes\n", static_cast<int>(kbytes_read));
}
}
return 0;
}