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1 | /* | |||
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2 | * ClienteUDP.c | |||
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3 | * | |||
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4 | * Fecha de creacion : Nov 2, 2009 | |||
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5 | * Ultima modificacion : Nov 19, 2009 | |||
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6 | * Autor : Jose Francisco Quenta C. | |||
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7 | */ | |||
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8 | ||||
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9 | #include <stdio.h> | |||
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10 | #include <stdlib.h> | |||
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11 | #include <string.h> | |||
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12 | #include <unistd.h> | |||
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13 | #include <errno.h> | |||
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14 | #include <sys/types.h> | |||
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15 | #include <sys/socket.h> | |||
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16 | #include <netinet/in.h> | |||
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17 | #include <arpa/inet.h> | |||
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18 | #include <netdb.h> | |||
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19 | ||||
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20 | #include "./Librerias/Mensajes.h" | |||
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21 | ||||
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22 | #define PUERTO_SERVIDOR 5500 | |||
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23 | //#define DIR_SERVIDOR "10.10.12.255" | |||
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24 | #define DIR_SERVIDOR "192.168.1.255" | |||
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25 | ||||
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26 | int ClienteUDP(char *opcion, char *valor){ | |||
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27 | ||||
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28 | int conexion_clienteFD; | |||
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29 | struct sockaddr_in inf_servidor; | |||
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30 | ||||
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31 | int broadcast= 1; | |||
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32 | int resultado; | |||
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33 | int numbytes_enviados; | |||
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34 | ||||
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35 | char *buff_peticion; | |||
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36 | char *comando= NULL; | |||
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37 | ||||
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38 | if (strcmp(opcion,"-l") == 0){ // Se reconoce el comando que se esta enviando | |||
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39 | comando= "CARGA:"; | |||
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40 | }else if(strcmp(opcion,"-c") == 0){ | |||
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41 | comando= "CAMBIA:"; | |||
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42 | }else if(strcmp(opcion,"-ch") == 0){ | |||
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43 | comando= "CHEQUEO:"; | |||
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44 | }else { | |||
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45 | ERROR("OPCION INCORRECTA: {-l|-c|-ch}"); | |||
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46 | return -1; | |||
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47 | } | |||
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48 | ||||
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49 | buff_peticion= (char *) malloc(strlen(comando)+1+strlen(valor)+1); // Se arma el buffer a ser enviado. | |||
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50 | strcpy(buff_peticion,comando); | |||
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51 | strcat(buff_peticion,valor); | |||
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52 | ||||
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53 | /* Se establece el socket UDP */ | |||
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54 | conexion_clienteFD= socket(AF_INET,SOCK_DGRAM,0); | |||
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55 | if (conexion_clienteFD == -1){ | |||
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56 | ERROR("No se pudo establecer el socket: socket()"); | |||
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57 | return -1; | |||
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58 | } | |||
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59 | ||||
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60 | /* Se establece el Broadcast con la funcion setsockpt() */ | |||
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61 | resultado= setsockopt(conexion_clienteFD, SOL_SOCKET, SO_BROADCAST, &broadcast, sizeof(broadcast)); | |||
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62 | if (resultado == -1){ | |||
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63 | ERROR("No se pudo establecer la opcion de Broadcast: setsockopt()"); | |||
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64 | return -1; | |||
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65 | } | |||
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66 | ||||
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67 | /* Se configura la estructura que contiene la informacion sobre el servidor: inf_servidor */ | |||
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68 | inf_servidor.sin_family= AF_INET; | |||
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69 | inf_servidor.sin_port= htons(PUERTO_SERVIDOR); | |||
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70 | inf_servidor.sin_addr.s_addr= inet_addr(DIR_SERVIDOR); | |||
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71 | memset(inf_servidor.sin_zero, '\0', sizeof(inf_servidor.sin_zero)); | |||
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72 | ||||
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73 | /* Se procede a enviar el buffer */ | |||
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74 | numbytes_enviados= sendto(conexion_clienteFD,buff_peticion,strlen(buff_peticion),0,(struct sockaddr *)&inf_servidor,sizeof(inf_servidor)); | |||
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75 | if(numbytes_enviados == -1){ | |||
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76 | ERROR("Error de envio de datos: sendto()"); | |||
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77 | return -1; | |||
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78 | } | |||
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79 | ||||
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80 | close(conexion_clienteFD); | |||
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81 | ||||
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82 | return 0; | |||
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83 | } No newline at end of file | |||
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