75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <arpa/inet.h>
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#include <sys/socket.h>
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#include <time.h>
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#define PORT 8081
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#define BUFFER_SIZE 4096
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int main() {
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int server_fd, new_socket;
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struct sockaddr_in address;
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int opt = 1;
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int addrlen = sizeof(address);
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char buffer[BUFFER_SIZE] = {0};
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if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0) {
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perror("socket failed");
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exit(EXIT_FAILURE);
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}
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if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT, &opt, sizeof(opt))) {
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perror("setsockopt");
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exit(EXIT_FAILURE);
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}
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address.sin_family = AF_INET;
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address.sin_addr.s_addr = INADDR_ANY;
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address.sin_port = htons(PORT);
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if (bind(server_fd, (struct sockaddr *)&address, sizeof(address)) < 0) {
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perror("bind failed");
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exit(EXIT_FAILURE);
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}
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if (listen(server_fd, 3) < 0) {
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perror("listen");
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exit(EXIT_FAILURE);
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}
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printf("TCP Performance Server listening on port %d...\n", PORT);
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if ((new_socket = accept(server_fd, (struct sockaddr *)&address, (socklen_t*)&addrlen)) < 0) {
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perror("accept");
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exit(EXIT_FAILURE);
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}
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printf("Client connected. Receiving data...\n");
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long long total_bytes = 0;
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int valread;
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struct timespec start, end;
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clock_gettime(CLOCK_MONOTONIC, &start);
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while ((valread = read(new_socket, buffer, BUFFER_SIZE)) > 0) {
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total_bytes += valread;
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}
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clock_gettime(CLOCK_MONOTONIC, &end);
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double time_taken = (end.tv_sec - start.tv_sec) + (end.tv_nsec - start.tv_nsec) / 1e9;
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double mb = total_bytes / (1024.0 * 1024.0);
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double throughput = mb / time_taken;
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printf("Received %.2f MB in %.2f seconds.\n", mb, time_taken);
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printf("Throughput: %.2f MB/s\n", throughput);
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close(new_socket);
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close(server_fd);
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return 0;
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}
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