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POBufferedReader readLine remains blocked when using C client and Java server
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copied!<p>I am currently working on a C client(A) which will communicate with a Java server(B), who is a client for a RMI server(C). A has to send its arguments to B which will send them to C, C will process them, resend them back to B and B will return them to A. So clearly A has to write to the socket and then remain blocked until B sends something back. The problem I am facing is that after A writes to the socket and remains blocked by select(), B is not unblocked from its own readLine.</p> <p>If I remove the select() and read() from A, everything will work perfectly. Here's the code</p> <p>A-client.c</p> <pre><code> int err; err = send(sockfd,(const char*)toSend,size,0);//send counter if (err < 0){ perror("Problem encountered while sending"); exit(3); } //it always gets past this line fd_set read_set; int nb; FD_ZERO(&read_set); //initialize variables for select FD_SET(sockfd, &read_set); nb = select(sockfd+1, &read_set, NULL, NULL, NULL); if (nb!=0){ if (FD_ISSET(sockfd, &read_set)) {//if data is incoming from*/ char word[4096]=""; if (read(sockfd, word, 4096) == 0){ perror("The server terminated prematurely"); exit(4); } for (i=0;i<4096;i++){ printf("%c",word[i]); } } } </code></pre> <p>B-server.Java</p> <pre><code>connection = socket1.accept(); BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream())); //it always passes this line String str = br.readLine(); //it passes this line only if i kill the C client or remove the read and select from the client String[] splitStr = str.split("\\s+"); int argsLen = splitStr.length; </code></pre>

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