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annotate seobeo/main.c @ 5:3e12bf044589

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Fixed Dowa hashmap to recursively add files into memory.
author June Park <parkjune1995@gmail.com>
date Sat, 27 Sep 2025 16:23:04 -0700
parents 0b3b4f5887bb
children 1e61008b9980
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0
5695ef413be0 Initialized mono repo with bazels with few examples.
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1 /*
5695ef413be0 Initialized mono repo with bazels with few examples.
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2 ** server.c -- a stream socket server demo
5695ef413be0 Initialized mono repo with bazels with few examples.
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3 */
5695ef413be0 Initialized mono repo with bazels with few examples.
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4
1
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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5 #include "seobeo/seobeo.h"
0
5695ef413be0 Initialized mono repo with bazels with few examples.
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6
3
2758f5527d2b [Seobeo] Working on simple TCP server and client logic.
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7 Dowa_PHashMap cache;
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8
0
5695ef413be0 Initialized mono repo with bazels with few examples.
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9 void SigchildHandler(int s)
5695ef413be0 Initialized mono repo with bazels with few examples.
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10 {
5695ef413be0 Initialized mono repo with bazels with few examples.
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11 (void)s; // quiet unused variable warning
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12
5695ef413be0 Initialized mono repo with bazels with few examples.
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13 // waitpid() might overwrite errno, so we save and restore it:
5695ef413be0 Initialized mono repo with bazels with few examples.
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14 int saved_errno = errno;
5695ef413be0 Initialized mono repo with bazels with few examples.
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15
5695ef413be0 Initialized mono repo with bazels with few examples.
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16 while(waitpid(-1, NULL, WNOHANG) > 0);
5695ef413be0 Initialized mono repo with bazels with few examples.
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17
5695ef413be0 Initialized mono repo with bazels with few examples.
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18 errno = saved_errno;
5695ef413be0 Initialized mono repo with bazels with few examples.
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19 }
5695ef413be0 Initialized mono repo with bazels with few examples.
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20
4
0b3b4f5887bb [Seobeo] Updated so that it create socket for both server and clients.
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21 void HandleClientRequest(Seobeo_PHandle cli)
1
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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22 {
5
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23 Dowa_PArena response_arena = Dowa_Arena_Create(8192);
3e12bf044589 Fixed Dowa hashmap to recursively add files into memory.
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24 if (!response_arena)
3e12bf044589 Fixed Dowa hashmap to recursively add files into memory.
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25 {
3e12bf044589 Fixed Dowa hashmap to recursively add files into memory.
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26 perror("Dowa_Arena_Initialize");
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27 goto clean_up;
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28 }
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29
3
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30 size_t idx = Dowa_HashMap_GetPosition(cache, "index.html");
4
0b3b4f5887bb [Seobeo] Updated so that it create socket for both server and clients.
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31 Dowa_PHashEntry entry = cache->entries[idx];
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32 if (!entry)
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33 {
3
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34 // 404 response if missing
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35 const char *not_found =
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3e12bf044589 Fixed Dowa hashmap to recursively add files into memory.
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36 "HTTP/2.0 404 Not Found\r\n"
3
2758f5527d2b [Seobeo] Working on simple TCP server and client logic.
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37 "Content-Length: 0\r\n"
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38 "Connection: close\r\n"
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39 "\r\n";
4
0b3b4f5887bb [Seobeo] Updated so that it create socket for both server and clients.
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40 send(cli->socket, not_found, strlen(not_found), 0);
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41 goto clean_up;
1
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42 }
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43
3
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44 // 3) Prepare header with the correct content‐length
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45 size_t body_size = entry->capacity;
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46 const char *template =
5
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47 "HTTP/2.0 200 OK\r\n"
1
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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48 "Content-Type: text/html\r\n"
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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49 "Content-Length: %zu\r\n"
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50 "Connection: close\r\n"
3
2758f5527d2b [Seobeo] Working on simple TCP server and client logic.
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51 "\r\n";
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52
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53 // Compute how large the header is and allocate just enough space
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54 int header_len = snprintf(NULL, 0, template, body_size);
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55 void *header = Dowa_Arena_Allocate(response_arena, (size_t)(header_len+1));
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56 if (header == NULL)
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57 {
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58 perror("Dowa_Arena_Allocate");
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59 goto clean_up;
3
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60 }
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61
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62 snprintf((char *)header, header_len + 1, template, body_size);
4
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63 Seobeo_Handle_QueueData(cli,
0b3b4f5887bb [Seobeo] Updated so that it create socket for both server and clients.
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64 (const uint8*)header,
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65 (uint32)(header_len + 1));
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66 Seobeo_Handle_QueueData(cli,
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67 (const uint8*)entry->buffer,
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68 (uint32)body_size);
5
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69 Seobeo_Handle_Flush(cli);
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70 goto clean_up;
4
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71
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72 clean_up:
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73 Seobeo_Handle_Destroy(cli);
5
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74 Dowa_Arena_Free(response_arena);
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75 return ;
1
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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76 }
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77
0
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78 int main(void)
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79 {
4
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80 struct sigaction sa;
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81
3
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82 cache = Dowa_HashMap_Create(1024);
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83 if (Dowa_Cache_Folder(cache, "seobeo/pages") != 0)
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84 {
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85 perror("Dowa_Cache_Folder");
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86 return -1;
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87 }
0
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88
4
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89 Seobeo_PHandle srv = Seobeo_Stream_Handle_Create(NULL, "8080");
0b3b4f5887bb [Seobeo] Updated so that it create socket for both server and clients.
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90
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91 if (srv->socket < 0) return 1;
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92 printf("Listening on port 8080\n");
0
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93
5
3e12bf044589 Fixed Dowa hashmap to recursively add files into memory.
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94 // TODO: Use epoll or something else.
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95 // Code from Beej's book
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96 // Handling child processes
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97 sa.sa_handler = SigchildHandler;
0
5695ef413be0 Initialized mono repo with bazels with few examples.
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98 sigemptyset(&sa.sa_mask);
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99 sa.sa_flags = SA_RESTART;
5
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100 if (sigaction(SIGCHLD, &sa, NULL) == -1)
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101 {
0
5695ef413be0 Initialized mono repo with bazels with few examples.
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102 perror("sigaction");
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103 exit(1);
5695ef413be0 Initialized mono repo with bazels with few examples.
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104 }
4
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105
5
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106 while (1)
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107 {
4
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108 Seobeo_PHandle cli = Seobeo_Stream_Handle_Accept(srv);
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109 if (cli == NULL)
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110 {
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111 continue;
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112 }
5
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113 printf("client connected from %s\n", cli->host);
0
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114
4
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115 if (!fork())
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116 {
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117 HandleClientRequest(cli);
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118 exit(0);
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119 }
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120 Seobeo_Handle_Destroy(cli);
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parents: 3
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121 }
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parents: 3
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122
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123 Seobeo_Handle_Destroy(srv);
0
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124 return 0;
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125 }