TCP Multithreading concurrency Echo Server

Some open source implementations are referenced:

1 //multi_thread_server.c2 //gcc-o multi_thread_server Multi_thread_server.c-lpthread3 4 5#include <netinet/inch.h>//For sockaddr_in6#include <sys/types.h>//For socket7#include <sys/socket.h>//For socket8#include <stdio.h>//For printf9#include <stdlib.h>//For exitTen#include <string.h>//For bzero One#include <pthread.h> A#include <sys/errno.h>//For errno -  - #defineLength_of_listen_queue 512 the #defineBuffer_size 128 -  - void* Talk_to_client (void*data) - { +     intNew_server_socket = (int) data; -     CharBuffer[buffer_size]; +     intlength; A     intmax_times= -; at  -     //Echo back -      while(max_times--) { - bzero (buffer,buffer_size); -Length = recv (New_server_socket,buffer,buffer_size,0); -         if(length==-1|| length==0) in              Break; -Send (New_server_socket,buffer,strlen (buffer),0); to     } +printf"disconnect...\n"); - Close (new_server_socket); the Pthread_exit (NULL); * } $ Panax Notoginseng voidUsage (Char*progname) { -fprintf (stderr,"Usage:%s-p [port_num]\n", Progname);  thefprintf (stderr,"usage:nohup%s-p [port_num] &>%s.log &\n", Progname,progname);  + } A  the intMainintargcChar**argv) + { -     //éèöãò»¸ösocketµøö ½á¹¹server_addr,´ú±í þîñæ÷internetµøö,¶ë¿ú $     structsockaddr_in server_addr; $Bzero (&AMP;SERVER_ADDR,sizeof(SERVER_ADDR));//°ñò»¶îäú´æçøµääúèý諲¿éèöãîª0 -server_addr.sin_family =af_inet; -SERVER_ADDR.SIN_ADDR.S_ADDR =htons (inaddr_any); the  -     intPort;Wuyi     inti; the  -     if(Argc >1) { Wu          for(i=1; i<argc; i++) { -             if((argv[i][0] =='-') || (argv[i][0] =='/')) { About                 Switch(ToLower (argv[i][1])) { $                       Case 'P': -Port=atoi (Argv[++i]); server_addr.sin_port =htons (port); -                          Break; -                     default: AUsage (argv[0]); +                         return 1; the                          Break; -                 } $             } the         } the     } the     Else { theUsage (argv[0]); -         return 1; in     } the  the     //´´½¨óãóúinternetµäá÷ðòé (TCP) socket,óãserver_socket´ú±í Þîñæ÷socket About     intServer_socket = socket (Af_inet,sock_stream,0); the     if(Server_socket <0) the     { theprintf"Create Socket failed!"); +Exit1); -     } the     Bayi     //set Time Out parameters the     /* the int Timeout_s=1000;//ms - int err=setsockopt (Server_socket,sol_socket,so_rcvtimeo, (const char *) &timeout_s,sizeof (timeout_s)); - if (err!=0) the       { the printf ("error:setsockopt \ n"); the Close (server_socket); the return 1; -       }     the     */ the      the     //°ñsocketºísocketµøö ½á¹¹áªïµæðà´94     if(Bind (Server_socket, (structsockaddr*) &server_addr,sizeof(SERVER_ADDR))) the     { theprintf"Server Bind Port:%d failed!", Port);  theExit1);98     } About      -     //Server_socketóãóú¼àìý101     if(Listen (Server_socket, length_of_listen_queue))102     {103printf"Server Listen failed!"); 104Exit1); the     }106     107     structsockaddr_in client_addr;108socklen_t length =sizeof(CLIENT_ADDR);109     intNew_server_socket; the 111      while(1)  the     {113New_server_socket = Accept (Server_socket, (structsockaddr*) &client_addr,&length); the         if(New_server_socket <0) the         { theprintf"Server Accept failed!/n");117              Break;118         }119 pthread_t Child_thread; - pthread_attr_t child_thread_attr;121Pthread_attr_init (&child_thread_attr);122Pthread_attr_setdetachstate (&child_thread_attr,pthread_create_detached);123         if(Pthread_create (&child_thread,&child_thread_attr,talk_to_client, (void*) New_server_socket) <0 )124printf"pthread_create Failed:%s/n", Strerror (errno)); the     }126 127 Close (server_socket); - 129     return 0; the}

TCP Multithreading concurrency Echo Server