Zi 字媒體
2017-07-25T20:27:27+00:00
LINUX C++ 多執行序 網路 (LINUX multi thread socket server)
資料來源:http://www.tidytutorials.com/2010/06/linux-c-socket-example-with-client.html
LinServer.cpp
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
void* SocketHandler(void*);
int main(int argv, char** argc){
int host_port= 1101;
struct sockaddr_in my_addr;
int hsock;
int * p_int ;
int err;
socklen_t addr_size = 0;
int* csock;
sockaddr_in sadr;
pthread_t thread_id=0;
hsock = socket(AF_INET, SOCK_STREAM, 0);
if(hsock == -1){
printf(“Error initializing socket %d\n”, errno);
goto FINISH;
}
p_int = (int*)malloc(sizeof(int));
*p_int = 1;
if( (setsockopt(hsock, SOL_SOCKET, SO_REUSEADDR, (char*)p_int, sizeof(int)) == -1 )||
(setsockopt(hsock, SOL_SOCKET, SO_KEEPALIVE, (char*)p_int, sizeof(int)) == -1 ) ){
printf(“Error setting options %d\n”, errno);
free(p_int);
goto FINISH;
}
free(p_int);
my_addr.sin_family = AF_INET ;
my_addr.sin_port = htons(host_port);
memset(&(my_addr.sin_zero), 0, 8);
my_addr.sin_addr.s_addr = INADDR_ANY ;
if( bind( hsock, (sockaddr*)&my_addr, sizeof(my_addr)) == -1 ){
fprintf(stderr,”Error binding to socket, make sure nothing else is listening on this port %d\n”,errno);
goto FINISH;
}
if(listen( hsock, 10) == -1 ){
fprintf(stderr, “Error listening %d\n”,errno);
goto FINISH;
}
//Now lets do the server stuff
addr_size = sizeof(sockaddr_in);
while(true){
printf(“waiting for a connection\n”);
csock = (int*)malloc(sizeof(int));
if((*csock = accept( hsock, (sockaddr*)&sadr, &addr_size))!= -1){
printf(“———————\nReceived connection from %s\n”,inet_ntoa(sadr.sin_addr));
pthread_create(&thread_id,0,&SocketHandler, (void*)csock );
pthread_detach(thread_id);
}
else{
fprintf(stderr, “Error accepting %d\n”, errno);
}
}
FINISH:
;
}
void* SocketHandler(void* lp){
int *csock = (int*)lp;
char buffer[1024];
int buffer_len = 1024;
int bytecount;
memset(buffer, 0, buffer_len);
if((bytecount = recv(*csock, buffer, buffer_len, 0))== -1){
fprintf(stderr, “Error receiving data %d\n”, errno);
goto FINISH;
}
printf(“Received bytes %d\nReceived string \”%s\”\n”, bytecount, buffer);
strcat(buffer, ” SERVER ECHO”);
if((bytecount = send(*csock, buffer, strlen(buffer), 0))== -1){
fprintf(stderr, “Error sending data %d\n”, errno);
goto FINISH;
}
printf(“Sent bytes %d\n”, bytecount);
FINISH:
free(csock);
return 0;
}
LinClient.cpp
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
int main(int argv, char** argc){
int host_port= 1101;
char* host_name=”127.0.0.1″;
struct sockaddr_in my_addr;
char buffer[1024];
int bytecount;
int buffer_len=0;
int hsock;
int * p_int;
int err;
hsock = socket(AF_INET, SOCK_STREAM, 0);
if(hsock == -1){
printf(“Error initializing socket %d\n”,errno);
goto FINISH;
}
p_int = (int*)malloc(sizeof(int));
*p_int = 1;
if( (setsockopt(hsock, SOL_SOCKET, SO_REUSEADDR, (char*)p_int, sizeof(int)) == -1 )||
(setsockopt(hsock, SOL_SOCKET, SO_KEEPALIVE, (char*)p_int, sizeof(int)) == -1 ) ){
printf(“Error setting options %d\n”,errno);
free(p_int);
goto FINISH;
}
free(p_int);
my_addr.sin_family = AF_INET ;
my_addr.sin_port = htons(host_port);
memset(&(my_addr.sin_zero), 0, 8);
my_addr.sin_addr.s_addr = inet_addr(host_name);
if( connect( hsock, (struct sockaddr*)&my_addr, sizeof(my_addr)) == -1 ){
if((err = errno) != EINPROGRESS){
fprintf(stderr, “Error connecting socket %d\n”, errno);
goto FINISH;
}
}
//Now lets do the client related stuff
buffer_len = 1024;
memset(buffer, ‘\0’, buffer_len);
printf(“Enter some text to send to the server (press enter)\n”);
fgets(buffer, 1024, stdin);
buffer[strlen(buffer)-1]=’\0′;
if( (bytecount=send(hsock, buffer, strlen(buffer),0))== -1){
fprintf(stderr, “Error sending data %d\n”, errno);
goto FINISH;
}
printf(“Sent bytes %d\n”, bytecount);
if((bytecount = recv(hsock, buffer, buffer_len, 0))== -1){
fprintf(stderr, “Error receiving data %d\n”, errno);
goto FINISH;
}
printf(“Recieved bytes %d\nReceived string \”%s\”\n”, bytecount, buffer);
close(hsock);
FINISH:
;
}
g++ -o server LinServer.cpp -lpthread
g++ -o client LinClient.cpp
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