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<div id="projectbrief">Set of algorithms implemented in C.</div>
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<p>Server side implementation of Server-Client system.
<a href="#details">More...</a></p>
<div class="textblock"><code>#include &lt;stdio.h&gt;</code><br />
<code>#include &lt;stdlib.h&gt;</code><br />
<code>#include &lt;string.h&gt;</code><br />
<code>#include &lt;arpa/inet.h&gt;</code><br />
<code>#include &lt;netdb.h&gt;</code><br />
<code>#include &lt;sys/socket.h&gt;</code><br />
<code>#include &lt;unistd.h&gt;</code><br />
</div><div class="textblock"><div class="dynheader">
Include dependency graph for server.c:</div>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="define-members" name="define-members"></a>
Macros</h2></td></tr>
<tr class="memitem:a392fb874e547e582e9c66a08a1f23326"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d1/d20/server_8c.html#a392fb874e547e582e9c66a08a1f23326">MAX</a>&#160;&#160;&#160;80</td></tr>
<tr class="memdesc:a392fb874e547e582e9c66a08a1f23326"><td class="mdescLeft">&#160;</td><td class="mdescRight">max. <a href="../../d1/d20/server_8c.html#a392fb874e547e582e9c66a08a1f23326">More...</a><br /></td></tr>
<tr class="separator:a392fb874e547e582e9c66a08a1f23326"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a614217d263be1fb1a5f76e2ff7be19a2"><td class="memItemLeft" align="right" valign="top"><a id="a614217d263be1fb1a5f76e2ff7be19a2" name="a614217d263be1fb1a5f76e2ff7be19a2"></a>
#define&#160;</td><td class="memItemRight" valign="bottom"><b>PORT</b>&#160;&#160;&#160;8080</td></tr>
<tr class="memdesc:a614217d263be1fb1a5f76e2ff7be19a2"><td class="mdescLeft">&#160;</td><td class="mdescRight">port number to connect to <br /></td></tr>
<tr class="separator:a614217d263be1fb1a5f76e2ff7be19a2"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a1e43924adac4ae865aa0acf79710261c"><td class="memItemLeft" align="right" valign="top"><a id="a1e43924adac4ae865aa0acf79710261c" name="a1e43924adac4ae865aa0acf79710261c"></a>
#define&#160;</td><td class="memItemRight" valign="bottom"><b>SA</b>&#160;&#160;&#160;struct sockaddr</td></tr>
<tr class="memdesc:a1e43924adac4ae865aa0acf79710261c"><td class="mdescLeft">&#160;</td><td class="mdescRight">shortname for sockaddr <br /></td></tr>
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Functions</h2></td></tr>
<tr class="memitem:ac17020a38607ab29ce18939d5194a32a"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d1/d20/server_8c.html#ac17020a38607ab29ce18939d5194a32a">func</a> (int sockfd)</td></tr>
<tr class="memdesc:ac17020a38607ab29ce18939d5194a32a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Continuous loop to send and receive over the socket. <a href="../../d1/d20/server_8c.html#ac17020a38607ab29ce18939d5194a32a">More...</a><br /></td></tr>
<tr class="separator:ac17020a38607ab29ce18939d5194a32a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d1/d20/server_8c.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a> ()</td></tr>
<tr class="memdesc:ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="mdescLeft">&#160;</td><td class="mdescRight">Driver code. <a href="../../d1/d20/server_8c.html#ae66f6b31b5ad750f1fe042a706a4e3d4">More...</a><br /></td></tr>
<tr class="separator:ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p >Server side implementation of Server-Client system. </p>
<dl class="section author"><dt>Author</dt><dd><a href="https://github.com/Nairit11" target="_blank">Nairit11</a> </dd>
<dd>
<a href="https://github.com/kvedala" target="_blank">Krishna Vedala</a> </dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="../../dd/d93/client_8c.html" title="Client side implementation of Server-Client system.">client_server/client.c</a> </dd></dl>
</div><h2 class="groupheader">Macro Definition Documentation</h2>
<a id="a392fb874e547e582e9c66a08a1f23326" name="a392fb874e547e582e9c66a08a1f23326"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a392fb874e547e582e9c66a08a1f23326">&#9670;&#160;</a></span>MAX</h2>
<div class="memitem">
<div class="memproto">
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<td class="memname">#define MAX&#160;&#160;&#160;80</td>
</tr>
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</div><div class="memdoc">
<p>max. </p>
<p >characters per message </p>
</div>
</div>
<h2 class="groupheader">Function Documentation</h2>
<a id="ac17020a38607ab29ce18939d5194a32a" name="ac17020a38607ab29ce18939d5194a32a"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ac17020a38607ab29ce18939d5194a32a">&#9670;&#160;</a></span>func()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
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<td class="memname">void func </td>
<td>(</td>
<td class="paramtype">int&#160;</td>
<td class="paramname"><em>sockfd</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Continuous loop to send and receive over the socket. </p>
<p >Exits when "exit" is sent from commandline. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">sockfd</td><td>socket handle number </td></tr>
</table>
</dd>
</dl>
<div class="fragment"><div class="line"><span class="lineno"> 48</span>{</div>
<div class="line"><span class="lineno"> 49</span> <span class="keywordtype">char</span> buff[<a class="code hl_define" href="../../d1/d20/server_8c.html#a392fb874e547e582e9c66a08a1f23326">MAX</a>];</div>
<div class="line"><span class="lineno"> 50</span> <span class="keywordtype">int</span> n;</div>
<div class="line"><span class="lineno"> 51</span> <span class="comment">// infinite loop for chat</span></div>
<div class="line"><span class="lineno"> 52</span> <span class="keywordflow">for</span> (;;)</div>
<div class="line"><span class="lineno"> 53</span> {</div>
<div class="line"><span class="lineno"> 54</span> bzero(buff, <a class="code hl_define" href="../../d1/d20/server_8c.html#a392fb874e547e582e9c66a08a1f23326">MAX</a>);</div>
<div class="line"><span class="lineno"> 55</span> </div>
<div class="line"><span class="lineno"> 56</span> <span class="comment">// read the message from client and copy it in buffer</span></div>
<div class="line"><span class="lineno"> 57</span> read(sockfd, buff, <span class="keyword">sizeof</span>(buff));</div>
<div class="line"><span class="lineno"> 58</span> <span class="comment">// print buffer which contains the client contents</span></div>
<div class="line"><span class="lineno"> 59</span> printf(<span class="stringliteral">&quot;From client: %s\t To client : &quot;</span>, buff);</div>
<div class="line"><span class="lineno"> 60</span> bzero(buff, <a class="code hl_define" href="../../d1/d20/server_8c.html#a392fb874e547e582e9c66a08a1f23326">MAX</a>);</div>
<div class="line"><span class="lineno"> 61</span> n = 0;</div>
<div class="line"><span class="lineno"> 62</span> <span class="comment">// copy server message in the buffer</span></div>
<div class="line"><span class="lineno"> 63</span> <span class="keywordflow">while</span> ((buff[n++] = getchar()) != <span class="charliteral">&#39;\n&#39;</span>)</div>
<div class="line"><span class="lineno"> 64</span> {</div>
<div class="line"><span class="lineno"> 65</span> ;</div>
<div class="line"><span class="lineno"> 66</span> }</div>
<div class="line"><span class="lineno"> 67</span> </div>
<div class="line"><span class="lineno"> 68</span> <span class="comment">// and send that buffer to client</span></div>
<div class="line"><span class="lineno"> 69</span> write(sockfd, buff, <span class="keyword">sizeof</span>(buff));</div>
<div class="line"><span class="lineno"> 70</span> </div>
<div class="line"><span class="lineno"> 71</span> <span class="comment">// if msg contains &quot;Exit&quot; then server exit and chat ended.</span></div>
<div class="line"><span class="lineno"> 72</span> <span class="keywordflow">if</span> (strncmp(<span class="stringliteral">&quot;exit&quot;</span>, buff, 4) == 0)</div>
<div class="line"><span class="lineno"> 73</span> {</div>
<div class="line"><span class="lineno"> 74</span> printf(<span class="stringliteral">&quot;Server Exit...\n&quot;</span>);</div>
<div class="line"><span class="lineno"> 75</span> <span class="keywordflow">break</span>;</div>
<div class="line"><span class="lineno"> 76</span> }</div>
<div class="line"><span class="lineno"> 77</span> }</div>
<div class="line"><span class="lineno"> 78</span>}</div>
<div class="ttc" id="aserver_8c_html_a392fb874e547e582e9c66a08a1f23326"><div class="ttname"><a href="../../d1/d20/server_8c.html#a392fb874e547e582e9c66a08a1f23326">MAX</a></div><div class="ttdeci">#define MAX</div><div class="ttdoc">max.</div><div class="ttdef"><b>Definition:</b> server.c:33</div></div>
</div><!-- fragment -->
</div>
</div>
<a id="ae66f6b31b5ad750f1fe042a706a4e3d4" name="ae66f6b31b5ad750f1fe042a706a4e3d4"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ae66f6b31b5ad750f1fe042a706a4e3d4">&#9670;&#160;</a></span>main()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
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<td class="memname">int main </td>
<td>(</td>
<td class="paramtype">void&#160;</td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Driver code. </p>
<div class="fragment"><div class="line"><span class="lineno"> 82</span>{</div>
<div class="line"><span class="lineno"> 83</span><span class="preprocessor">#ifdef _WIN32</span></div>
<div class="line"><span class="lineno"> 84</span> <span class="comment">// when using winsock2.h, startup required</span></div>
<div class="line"><span class="lineno"> 85</span> WSADATA wsData;</div>
<div class="line"><span class="lineno"> 86</span> <span class="keywordflow">if</span> (WSAStartup(MAKEWORD(2, 2), &amp;wsData) != 0)</div>
<div class="line"><span class="lineno"> 87</span> {</div>
<div class="line"><span class="lineno"> 88</span> perror(<span class="stringliteral">&quot;WSA Startup error: \n&quot;</span>);</div>
<div class="line"><span class="lineno"> 89</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><span class="lineno"> 90</span> }</div>
<div class="line"><span class="lineno"> 91</span> </div>
<div class="line"><span class="lineno"> 92</span> atexit(cleanup); <span class="comment">// register at-exit function</span></div>
<div class="line"><span class="lineno"> 93</span><span class="preprocessor">#endif</span></div>
<div class="line"><span class="lineno"> 94</span> </div>
<div class="line"><span class="lineno"> 95</span> <span class="keywordtype">int</span> sockfd, connfd;</div>
<div class="line"><span class="lineno"> 96</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> len;</div>
<div class="line"><span class="lineno"> 97</span> <span class="keyword">struct </span>sockaddr_in servaddr, cli;</div>
<div class="line"><span class="lineno"> 98</span> </div>
<div class="line"><span class="lineno"> 99</span> <span class="comment">// socket create and verification</span></div>
<div class="line"><span class="lineno"> 100</span> sockfd = socket(AF_INET, SOCK_STREAM, 0);</div>
<div class="line"><span class="lineno"> 101</span> <span class="keywordflow">if</span> (sockfd == -1)</div>
<div class="line"><span class="lineno"> 102</span> {</div>
<div class="line"><span class="lineno"> 103</span> perror(<span class="stringliteral">&quot;socket creation failed...\n&quot;</span>);</div>
<div class="line"><span class="lineno"> 104</span> exit(0);</div>
<div class="line"><span class="lineno"> 105</span> }</div>
<div class="line"><span class="lineno"> 106</span> <span class="keywordflow">else</span></div>
<div class="line"><span class="lineno"> 107</span> {</div>
<div class="line"><span class="lineno"> 108</span> printf(<span class="stringliteral">&quot;Socket successfully created..\n&quot;</span>);</div>
<div class="line"><span class="lineno"> 109</span> }</div>
<div class="line"><span class="lineno"> 110</span> bzero(&amp;servaddr, <span class="keyword">sizeof</span>(servaddr));</div>
<div class="line"><span class="lineno"> 111</span> </div>
<div class="line"><span class="lineno"> 112</span> <span class="comment">// assign IP, PORT</span></div>
<div class="line"><span class="lineno"> 113</span> servaddr.sin_family = AF_INET;</div>
<div class="line"><span class="lineno"> 114</span> servaddr.sin_addr.s_addr = htonl(INADDR_ANY);</div>
<div class="line"><span class="lineno"> 115</span> servaddr.sin_port = htons(<a class="code hl_define" href="../../d1/d20/server_8c.html#a614217d263be1fb1a5f76e2ff7be19a2">PORT</a>);</div>
<div class="line"><span class="lineno"> 116</span> </div>
<div class="line"><span class="lineno"> 117</span> <span class="comment">// Binding newly created socket to given IP and verification</span></div>
<div class="line"><span class="lineno"> 118</span> <span class="keywordflow">if</span> ((bind(sockfd, (<a class="code hl_define" href="../../d1/d20/server_8c.html#a1e43924adac4ae865aa0acf79710261c">SA</a> *)&amp;servaddr, <span class="keyword">sizeof</span>(servaddr))) != 0)</div>
<div class="line"><span class="lineno"> 119</span> {</div>
<div class="line"><span class="lineno"> 120</span> perror(<span class="stringliteral">&quot;socket bind failed...\n&quot;</span>);</div>
<div class="line"><span class="lineno"> 121</span> exit(0);</div>
<div class="line"><span class="lineno"> 122</span> }</div>
<div class="line"><span class="lineno"> 123</span> <span class="keywordflow">else</span></div>
<div class="line"><span class="lineno"> 124</span> {</div>
<div class="line"><span class="lineno"> 125</span> printf(<span class="stringliteral">&quot;Socket successfully binded..\n&quot;</span>);</div>
<div class="line"><span class="lineno"> 126</span> }</div>
<div class="line"><span class="lineno"> 127</span> </div>
<div class="line"><span class="lineno"> 128</span> <span class="comment">// Now server is ready to listen and verification</span></div>
<div class="line"><span class="lineno"> 129</span> <span class="keywordflow">if</span> ((listen(sockfd, 5)) != 0)</div>
<div class="line"><span class="lineno"> 130</span> {</div>
<div class="line"><span class="lineno"> 131</span> perror(<span class="stringliteral">&quot;Listen failed...\n&quot;</span>);</div>
<div class="line"><span class="lineno"> 132</span> exit(0);</div>
<div class="line"><span class="lineno"> 133</span> }</div>
<div class="line"><span class="lineno"> 134</span> <span class="keywordflow">else</span></div>
<div class="line"><span class="lineno"> 135</span> {</div>
<div class="line"><span class="lineno"> 136</span> printf(<span class="stringliteral">&quot;Server listening..\n&quot;</span>);</div>
<div class="line"><span class="lineno"> 137</span> }</div>
<div class="line"><span class="lineno"> 138</span> len = <span class="keyword">sizeof</span>(cli);</div>
<div class="line"><span class="lineno"> 139</span> </div>
<div class="line"><span class="lineno"> 140</span> <span class="comment">// Accept the data packet from client and verification</span></div>
<div class="line"><span class="lineno"> 141</span> connfd = accept(sockfd, (<a class="code hl_define" href="../../d1/d20/server_8c.html#a1e43924adac4ae865aa0acf79710261c">SA</a> *)&amp;cli, &amp;len);</div>
<div class="line"><span class="lineno"> 142</span> <span class="keywordflow">if</span> (connfd &lt; 0)</div>
<div class="line"><span class="lineno"> 143</span> {</div>
<div class="line"><span class="lineno"> 144</span> perror(<span class="stringliteral">&quot;server acccept failed...\n&quot;</span>);</div>
<div class="line"><span class="lineno"> 145</span> exit(0);</div>
<div class="line"><span class="lineno"> 146</span> }</div>
<div class="line"><span class="lineno"> 147</span> <span class="keywordflow">else</span></div>
<div class="line"><span class="lineno"> 148</span> {</div>
<div class="line"><span class="lineno"> 149</span> printf(<span class="stringliteral">&quot;server acccept the client...\n&quot;</span>);</div>
<div class="line"><span class="lineno"> 150</span> }</div>
<div class="line"><span class="lineno"> 151</span> </div>
<div class="line"><span class="lineno"> 152</span> <span class="comment">// Function for chatting between client and server</span></div>
<div class="line"><span class="lineno"> 153</span> <a class="code hl_function" href="../../d1/d20/server_8c.html#ac17020a38607ab29ce18939d5194a32a">func</a>(connfd);</div>
<div class="line"><span class="lineno"> 154</span> </div>
<div class="line"><span class="lineno"> 155</span> <span class="comment">// After chatting close the socket</span></div>
<div class="line"><span class="lineno"> 156</span> close(sockfd);</div>
<div class="line"><span class="lineno"> 157</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><span class="lineno"> 158</span>}</div>
<div class="ttc" id="aserver_8c_html_a1e43924adac4ae865aa0acf79710261c"><div class="ttname"><a href="../../d1/d20/server_8c.html#a1e43924adac4ae865aa0acf79710261c">SA</a></div><div class="ttdeci">#define SA</div><div class="ttdoc">shortname for sockaddr</div><div class="ttdef"><b>Definition:</b> server.c:35</div></div>
<div class="ttc" id="aserver_8c_html_a614217d263be1fb1a5f76e2ff7be19a2"><div class="ttname"><a href="../../d1/d20/server_8c.html#a614217d263be1fb1a5f76e2ff7be19a2">PORT</a></div><div class="ttdeci">#define PORT</div><div class="ttdoc">port number to connect to</div><div class="ttdef"><b>Definition:</b> server.c:34</div></div>
<div class="ttc" id="aserver_8c_html_ac17020a38607ab29ce18939d5194a32a"><div class="ttname"><a href="../../d1/d20/server_8c.html#ac17020a38607ab29ce18939d5194a32a">func</a></div><div class="ttdeci">void func(int sockfd)</div><div class="ttdoc">Continuous loop to send and receive over the socket.</div><div class="ttdef"><b>Definition:</b> server.c:47</div></div>
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