USR IOT USR-TCP232-302 User Manual

USR-TCP232-302 User Manual h.usriot.com
Jinan USR IOT Technology Limited www.usriot.com
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27. memset((void *)&clientaddr, 0, sizeof(clientaddr));
28. hostaddr.sin_family = AF_INET;
29. hostaddr.sin_port = htons(LISTEN_PORT);
30. hostaddr.sin_addr.s_addr = htonl(INADDR_ANY);
31. listen_sock = socket(AF_INET, SOCK_STREAM, 0);
32. if(listen_sock < 0)
33. {
34. syslog(LOG_ERR, "%s:%d, create socket failed", __FILE__, __LINE__);
35. exit(1);
36. }
37. if(bind(listen_sock, (struct sockaddr *)&hostaddr, sizeof(hostaddr)) < 0)
38. {
39. syslog(LOG_ERR, "%s:%d, bind socket failed", __FILE__, __LINE__);
40. exit(1);
41. }
42. if(listen(listen_sock, MAX_LISTEN_NUM) < 0)
43. {
44. syslog(LOG_ERR, "%s:%d, listen failed", __FILE__, __LINE__);
45. exit(1);
46. }
47. while(1)
48. {
49. app_sock = accept(listen_sock, (struct sockaddr *)&clientaddr, &socklen);
50. if(app_sock < 0)
51. {
52. syslog(LOG_ERR, "%s:%d, accept failed", __FILE__, __LINE__);
53. exit(1);
54. }
55. sprintf(sendbuf, "welcome %s:%d here!/n", inet_ntoa(clientaddr.sin_addr.s_addr), clientaddr.sin_port);
56. //send data
57. sendlen = strlen(sendbuf) +1;
58. retlen = 0;
59. leftlen = sendlen;
60. ptr = sendbuf;
61. //while(leftlen)
62. {
63. retlen = send(app_sock, ptr, sendlen, 0);
64. if(retlen < 0)
65. {
66. if(errno == EINTR)
67. retlen = 0;
68. else
69. exit(1);
70. }
71. leftlen -= retlen;

USR IOT USR-TCP232-302 Specifications

General

Brand	USR IOT
Model	USR-TCP232-302
Category	Media Converter
Language	English