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e2042e677f
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <unistd.h> |
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#include <sys/types.h> |
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#include <sys/socket.h> |
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#include <arpa/inet.h> |
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#include <string.h> |
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#include <errno.h> |
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#define die(MSG) { fprintf(stderr, "%s %s. (%i)\n", MSG, strerror(errno), errno); return errno; } |
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#define SVPORT 8081 |
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#define MAXCONN 2000000 |
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int main(int argc, char *argv[]) { |
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int sock_fd; |
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struct sockaddr_in serv_addr; |
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// Open socket and die if invalid file descriptor is returned
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if ((sock_fd = socket(AF_INET,SOCK_STREAM, 0)) < 0) |
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die("Failed to open socket."); |
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// Set server address and port
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memset(&serv_addr, 0, sizeof(serv_addr)); |
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serv_addr.sin_family = AF_INET; |
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serv_addr.sin_addr.s_addr = htonl(INADDR_ANY); |
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serv_addr.sin_port = htons(SVPORT); |
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// Bind to socket
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if (bind(sock_fd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) |
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die("Couldn't bind to socket."); |
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// Go in passive(LISTEN) mode
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if ((listen(sock_fd, MAXCONN)) < 0) |
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die("Failed to listen on socket."); |
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printf("Now listening for connections.\n"); |
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// Accept connections
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char buffer[] = "Hello, fellow navigator!\n"; |
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for (int conncount=0;; conncount++) { |
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int conn_fd; |
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socklen_t client_len; |
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struct sockaddr_in client_addr; |
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client_len = sizeof(client_addr); |
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if ((conn_fd = accept(sock_fd, (struct sockaddr *) &client_addr, &client_len)) < 0) |
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die("Failed to accept connection."); |
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printf("Processed %i connections, last from %15s on port %5i.\r", conncount, inet_ntoa(client_addr.sin_addr), client_addr.sin_port); |
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setvbuf(stdout, NULL, _IONBF, 0); |
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if (send(conn_fd, buffer, strlen(buffer),0) < 0) |
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fprintf(stderr, "\nFailed to send data. %s.\n", strerror(errno)); |
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if (close(conn_fd) < 0) |
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die("Failed to close connection."); |
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} |
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close(sock_fd); |
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return 1; |
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} |
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