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POlinux c sockets
 

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    <p>good evening, I am a newbie in using linux sockets under the c programming language.</p> <p>for now I'm trying to make a client communicate with a server. basically the thing i'm stuck at is making the server accept a connection from the client and print the numbers after it receives them. here is the source code for the server so far:</p> <pre><code>#include &lt;sys/socket.h&gt; #include &lt;netinet/in.h&gt; #include &lt;arpa/inet.h&gt; #include &lt;stdio.h&gt; #include &lt;stdlib.h&gt; #include &lt;unistd.h&gt; #include &lt;errno.h&gt; #include &lt;string.h&gt; #include &lt;sys/types.h&gt; #include &lt;time.h&gt; int main(int argc, char *argv[]) { int listenfd = 0, connfd = 0, n = 0; struct sockaddr_in serv_addr; char sendBuff[1024], recvBuff[1024]; listenfd = socket(AF_INET, SOCK_STREAM, 0); memset(&amp;serv_addr, '0', sizeof(serv_addr)); memset(sendBuff, '0', sizeof(sendBuff)); serv_addr.sin_family = AF_INET; serv_addr.sin_addr.s_addr = htonl(INADDR_ANY); serv_addr.sin_port = htons(5000); bind(listenfd, (struct sockaddr*)&amp;serv_addr, sizeof(serv_addr)); listen(listenfd, 10); while(1) { printf("in first while loop\n"); connfd = accept(listenfd, (struct sockaddr*)NULL, NULL); while( (n = read(listenfd, recvBuff, sizeof(recvBuff)-1)) &gt; 0) { printf("in second while loop\n"); recvBuff[n] = 0; fputs(recvBuff, stdout); } } } </code></pre> <p>I didn't post the client code since I don't think it's relevant. I have made a server which sends something to a client and it worked just fine. but I'm seriously confused by how I'm supposed to make the server accept input from the client. thank you in advance. </p>
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    1. CO`while( (n = read(connfd, recvBuff, sizeof(recvBuff)-1)) > 0)`
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    2. COMinor point, but they're not really "linux sockets". The socket API has been around since the 80s, known originally as Berkeley sockets, because they showed up in BSD UNIX first. It was the de facto standard for a long time before it became a POSIX standard with only minor changes. If you do use it correctly (and handling byte order issues is part of that) it should compile and run on a long list of platforms.
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