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< p > Server side implementation of UDP client-server model.
< a href = "#details" > More...< / a > < / p >
< div class = "textblock" > < code > #include < arpa/inet.h> < / code > < br / >
< code > #include < netdb.h> < / code > < br / >
< code > #include < netinet/in.h> < / code > < br / >
< code > #include < sys/socket.h> < / code > < br / >
< code > #include < sys/types.h> < / code > < br / >
< code > #include < unistd.h> < / code > < br / >
< code > #include < stdio.h> < / code > < br / >
< code > #include < stdlib.h> < / code > < br / >
< code > #include < string.h> < / code > < br / >
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Include dependency graph for udp_server.c:< / div >
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< div class = "center" > < div class = "zoom" > < iframe scrolling = "no" frameborder = "0" src = "../../dd/d2f/udp__server_8c__incl.svg" width = "100%" height = "384" > < p > < b > This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.< / b > < / p > < / iframe > < / div >
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Macros< / h2 > < / td > < / tr >
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#define  < / td > < td class = "memItemRight" valign = "bottom" > < b > PORT< / b >       8080< / td > < / tr >
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< tr class = "memdesc:a614217d263be1fb1a5f76e2ff7be19a2" > < td class = "mdescLeft" >   < / td > < td class = "mdescRight" > port number to connect to < br / > < / td > < / tr >
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Functions< / h2 > < / td > < / tr >
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< tr class = "memdesc:ae66f6b31b5ad750f1fe042a706a4e3d4" > < td class = "mdescLeft" >   < / td > < td class = "mdescRight" > Driver code. < a href = "../../d8/dca/udp__server_8c.html#ae66f6b31b5ad750f1fe042a706a4e3d4" > More...< / a > < br / > < / td > < / tr >
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< a name = "details" id = "details" > < / a > < h2 class = "groupheader" > Detailed Description< / h2 >
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< div class = "textblock" > < p > Server side implementation of UDP client-server model. < / p >
< dl class = "section author" > < dt > Author< / dt > < dd > < a href = "https://github.com/TheShubham99" target = "_blank" > TheShubham99< / a > < / dd >
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< dd >
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< a href = "https://github.com/kvedala" target = "_blank" > Krishna Vedala< / a > < / dd > < / dl >
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< dl class = "section see" > < dt > See also< / dt > < dd > < a class = "el" href = "../../da/de6/udp__client_8c.html" title = "Client side implementation of UDP client-server model." > client_server/udp_client.c< / a > < / dd > < / dl >
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< / div > < h2 class = "groupheader" > Function Documentation< / h2 >
< a id = "ae66f6b31b5ad750f1fe042a706a4e3d4" name = "ae66f6b31b5ad750f1fe042a706a4e3d4" > < / a >
< h2 class = "memtitle" > < span class = "permalink" > < a href = "#ae66f6b31b5ad750f1fe042a706a4e3d4" > ◆ < / a > < / span > main()< / h2 >
< div class = "memitem" >
< div class = "memproto" >
< table class = "memname" >
< tr >
< td class = "memname" > int main < / td >
< td > (< / td >
< td class = "paramtype" > void  < / td >
< td class = "paramname" > < / td > < td > )< / td >
< td > < / td >
< / tr >
< / table >
< / div > < div class = "memdoc" >
< p > Driver code. < / p >
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< div class = "fragment" > < div class = "line" > < span class = "lineno" > 36< / span > {< / div >
< div class = "line" > < span class = "lineno" > 37< / span > < span class = "preprocessor" > #ifdef _WIN32< / span > < / div >
< div class = "line" > < span class = "lineno" > 38< / span > < span class = "comment" > // when using winsock2.h, startup required< / span > < / div >
< div class = "line" > < span class = "lineno" > 39< / span > WSADATA wsData;< / div >
< div class = "line" > < span class = "lineno" > 40< / span > < span class = "keywordflow" > if< / span > (WSAStartup(MAKEWORD(2, 2), & wsData) != 0)< / div >
< div class = "line" > < span class = "lineno" > 41< / span > {< / div >
< div class = "line" > < span class = "lineno" > 42< / span > perror(< span class = "stringliteral" > " WSA Startup error: \n" < / span > );< / div >
< div class = "line" > < span class = "lineno" > 43< / span > < span class = "keywordflow" > return< / span > 0;< / div >
< div class = "line" > < span class = "lineno" > 44< / span > }< / div >
< div class = "line" > < span class = "lineno" > 45< / span > < / div >
< div class = "line" > < span class = "lineno" > 46< / span > atexit(cleanup); < span class = "comment" > // register at-exit function< / span > < / div >
< div class = "line" > < span class = "lineno" > 47< / span > < span class = "preprocessor" > #endif< / span > < / div >
< div class = "line" > < span class = "lineno" > 48< / span > < / div >
< div class = "line" > < span class = "lineno" > 49< / span > < span class = "keywordtype" > int< / span > sockfd;< / div >
< div class = "line" > < span class = "lineno" > 50< / span > < span class = "keywordtype" > char< / span > < a class = "code hl_struct" href = "../../dd/da2/structbuffer.html" > buffer< / a > [< a class = "code hl_define" href = "../../d8/dca/udp__server_8c.html#a3e937c42922f7601edb17b747602c471" > MAXLINE< / a > ];< / div >
< div class = "line" > < span class = "lineno" > 51< / span > < span class = "keywordtype" > char< / span > *hello = < span class = "stringliteral" > " Hello from server" < / span > ;< / div >
< div class = "line" > < span class = "lineno" > 52< / span > < span class = "keyword" > struct < / span > sockaddr_in servaddr, cliaddr;< / div >
< div class = "line" > < span class = "lineno" > 53< / span > < / div >
< div class = "line" > < span class = "lineno" > 54< / span > < span class = "comment" > // Creating socket file descriptor< / span > < / div >
< div class = "line" > < span class = "lineno" > 55< / span > < span class = "keywordflow" > if< / span > ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0)< / div >
< div class = "line" > < span class = "lineno" > 56< / span > {< / div >
< div class = "line" > < span class = "lineno" > 57< / span > perror(< span class = "stringliteral" > " socket creation failed" < / span > );< / div >
< div class = "line" > < span class = "lineno" > 58< / span > exit(EXIT_FAILURE);< / div >
< div class = "line" > < span class = "lineno" > 59< / span > }< / div >
< div class = "line" > < span class = "lineno" > 60< / span > < / div >
< div class = "line" > < span class = "lineno" > 61< / span > memset(& servaddr, 0, < span class = "keyword" > sizeof< / span > (servaddr));< / div >
< div class = "line" > < span class = "lineno" > 62< / span > memset(& cliaddr, 0, < span class = "keyword" > sizeof< / span > (cliaddr));< / div >
< div class = "line" > < span class = "lineno" > 63< / span > < / div >
< div class = "line" > < span class = "lineno" > 64< / span > < span class = "comment" > // Filling server information< / span > < / div >
< div class = "line" > < span class = "lineno" > 65< / span > servaddr.sin_family = AF_INET; < span class = "comment" > // IPv4< / span > < / div >
< div class = "line" > < span class = "lineno" > 66< / span > servaddr.sin_addr.s_addr = INADDR_ANY;< / div >
< div class = "line" > < span class = "lineno" > 67< / span > servaddr.sin_port = htons(< a class = "code hl_define" href = "../../d8/dca/udp__server_8c.html#a614217d263be1fb1a5f76e2ff7be19a2" > PORT< / a > );< / div >
< div class = "line" > < span class = "lineno" > 68< / span > < / div >
< div class = "line" > < span class = "lineno" > 69< / span > < span class = "comment" > // Bind the socket with the server address< / span > < / div >
< div class = "line" > < span class = "lineno" > 70< / span > < span class = "keywordflow" > if< / span > (bind(sockfd, (< span class = "keyword" > const< / span > < span class = "keyword" > struct< / span > sockaddr *)& servaddr, < span class = "keyword" > sizeof< / span > (servaddr)) < 0)< / div >
< div class = "line" > < span class = "lineno" > 71< / span > {< / div >
< div class = "line" > < span class = "lineno" > 72< / span > perror(< span class = "stringliteral" > " bind failed" < / span > );< / div >
< div class = "line" > < span class = "lineno" > 73< / span > exit(EXIT_FAILURE);< / div >
< div class = "line" > < span class = "lineno" > 74< / span > }< / div >
< div class = "line" > < span class = "lineno" > 75< / span > < / div >
< div class = "line" > < span class = "lineno" > 76< / span > < span class = "keywordtype" > unsigned< / span > < span class = "keywordtype" > int< / span > len;< / div >
< div class = "line" > < span class = "lineno" > 77< / span > < span class = "keywordtype" > int< / span > n;< / div >
< div class = "line" > < span class = "lineno" > 78< / span > n = recvfrom(sockfd, (< span class = "keywordtype" > char< / span > *)< a class = "code hl_struct" href = "../../dd/da2/structbuffer.html" > buffer< / a > , < a class = "code hl_define" href = "../../d8/dca/udp__server_8c.html#a3e937c42922f7601edb17b747602c471" > MAXLINE< / a > , MSG_WAITALL,< / div >
< div class = "line" > < span class = "lineno" > 79< / span > (< span class = "keyword" > struct< / span > sockaddr *)& cliaddr, & len);< / div >
< div class = "line" > < span class = "lineno" > 80< / span > < a class = "code hl_struct" href = "../../dd/da2/structbuffer.html" > buffer< / a > [n] = < span class = "charliteral" > ' \0' < / span > ;< / div >
< div class = "line" > < span class = "lineno" > 81< / span > printf(< span class = "stringliteral" > " Client : %s\n" < / span > , < a class = "code hl_struct" href = "../../dd/da2/structbuffer.html" > buffer< / a > );< / div >
< div class = "line" > < span class = "lineno" > 82< / span > sendto(sockfd, (< span class = "keyword" > const< / span > < span class = "keywordtype" > char< / span > *)hello, strlen(hello), 0,< / div >
< div class = "line" > < span class = "lineno" > 83< / span > (< span class = "keyword" > const< / span > < span class = "keyword" > struct< / span > sockaddr *)& cliaddr, len);< / div >
< div class = "line" > < span class = "lineno" > 84< / span > printf(< span class = "stringliteral" > " Hello message sent.\n" < / span > );< / div >
< div class = "line" > < span class = "lineno" > 85< / span > < / div >
< div class = "line" > < span class = "lineno" > 86< / span > close(sockfd);< / div >
< div class = "line" > < span class = "lineno" > 87< / span > < / div >
< div class = "line" > < span class = "lineno" > 88< / span > < span class = "keywordflow" > return< / span > 0;< / div >
< div class = "line" > < span class = "lineno" > 89< / span > }< / div >
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< div class = "ttc" id = "astructbuffer_html" > < div class = "ttname" > < a href = "../../dd/da2/structbuffer.html" > buffer< / a > < / div > < div class = "ttdoc" > struct used to store character in certain times< / div > < div class = "ttdef" > < b > Definition:< / b > min_printf.h:31< / div > < / div >
< div class = "ttc" id = "audp__server_8c_html_a3e937c42922f7601edb17b747602c471" > < div class = "ttname" > < a href = "../../d8/dca/udp__server_8c.html#a3e937c42922f7601edb17b747602c471" > MAXLINE< / a > < / div > < div class = "ttdeci" > #define MAXLINE< / div > < div class = "ttdoc" > maximum characters per line< / div > < div class = "ttdef" > < b > Definition:< / b > udp_server.c:27< / div > < / div >
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