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debug socket udp, trying to undersand recvfrom to handle long msg with list of buffer

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fanasina
2025-06-17 19:20:41 +02:00
parent 6d54cc4d12
commit adf442cb85
3 changed files with 62 additions and 23 deletions
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y_socket_t/include/y_socket_t/y_socket_t.h
+4 -2
View File
@@ -11,8 +11,9 @@
#include <netinet/in.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <sys/sendfile.h>
//#include <fcntl.h>
#include <fcntl.h>
#include <pthread.h>
#include <poll.h>
@@ -50,7 +51,7 @@ GENERATE_LIST_ALL(y_ptr_STRING)
GEN_HEAD_PTR_LIST(y_ptr_STRING)
size_t total_size_list_y_ptr_STRING(struct main_list_y_ptr_STRING *mstr);
size_t copy_list_y_ptr_STRING_to_one_string(char *dst_str, struct main_list_y_ptr_STRING *mstr);
size_t copy_list_y_ptr_STRING_to_one_string(char **p_dst_str, struct main_list_y_ptr_STRING *mstr);
struct y_socket_t{
struct pollfd *fds;
@@ -71,6 +72,7 @@ struct argdst {
char *addrStr;
};
//struct y_socket_t * y_socket_create_(char * port);
struct y_socket_t * y_socket_create(char * port, size_t size_fds);
void y_socket_free(struct y_socket_t *socket);
y_socket_t/src/y_socket_t/y_socket_t.c
+56 -19
View File
@@ -14,6 +14,8 @@ struct y_string * create_y_ptr_STRING(const char *buf, size_t size){
return string;
}
GEN_LIST_ALL(y_ptr_STRING)
GEN_FUNC_PTR_LIST_FREE(y_ptr_STRING){
free(arg->buf);
free(arg);
@@ -24,22 +26,26 @@ size_t total_size_list_y_ptr_STRING(struct main_list_y_ptr_STRING *mstr){
for(move_current_to_begin_list_y_ptr_STRING(mstr); mstr->current_list; increment_list_y_ptr_STRING(mstr)){
total_size += mstr->current_list->value->size;
}
printf("debug: totalsize :%ld\n",total_size);
return total_size;
}
size_t copy_list_y_ptr_STRING_to_one_string(char *dst_str, struct main_list_y_ptr_STRING *mstr){
if(dst_str == NULL){
dst_str=malloc(total_size_list_y_ptr_STRING(mstr));
size_t copy_list_y_ptr_STRING_to_one_string(char **p_dst_str, struct main_list_y_ptr_STRING *mstr){
if(*p_dst_str == NULL){
*p_dst_str=malloc(total_size_list_y_ptr_STRING(mstr));
}
char * dst_str = *p_dst_str;
char *cur_str = dst_str;
size_t local_size=0;
size_t count_size=0;
for(move_current_to_begin_list_y_ptr_STRING(mstr); mstr->current_list; increment_list_y_ptr_STRING(mstr)){
local_size = mstr->current_list->value->size;
printf("debug: local_size :%ld\n",local_size);
for(size_t i=0; i<local_size; ++i){
cur_str[i]=mstr->current_list->value->buf[i];
}
count_size += local_size;
printf("debug: countsize :%ld dst_str=<%s>\n",count_size,dst_str);
cur_str = dst_str + count_size;
}
@@ -64,7 +70,9 @@ struct y_socket_t * y_socket_create(char *port, size_t size_fds){
pthread_mutex_init(sock_temp->mut_go_on, NULL);
return sock_temp;
}
struct y_socket_t * y_socket_create_(char * port){
return y_socket_create(port, 2);
}
void y_socket_free(struct y_socket_t *socket){
free(socket->fds);
free_all_var_list_y_NODE_T(socket->nodes);
@@ -137,7 +145,13 @@ int get_fds_with_getaddrinfo(char *port /*service */, char * node, struct pollfd
fds[af].fd=-1;
}
}
}
/*
int flags = fcntl(fds[af].fd, F_GETFL);
flags |= O_NONBLOCK;
flags |= MSG_DONTWAIT;
fcntl(fds[af].fd, F_SETFL, flags);
*/
}
}
}
@@ -209,15 +223,17 @@ void send_file_for_all_nodes(struct pollfd *fds, struct main_list_y_NODE_T *node
fprintf(stderr,"error opening file |%s| for reading\n",filename);
return /*NULL*/;
}
while((retread = read(fd_file, buf_send, BUF_SIZE) ) > 0 )
{
while((retread = read(fd_file, buf_send, BUF_SIZE) ) > 0 ){
//memset(msgRet, 0, BUF_SIZE + NI_MAXHOST + NI_MAXSERV + 100);
// sprintf(msgRet, "from %s:%s =%s",host, service, buf);
// len_msgRet = strlen(msgRet);
printf("sending response %s :\n",buf_send);
FOR_LIST_FORM_BEGIN(y_NODE_T, nodes){
FOR_LIST_FORM_BEGIN(y_NODE_T, nodes){
c_af=(nodes->current_list->value).addr.ss_family;
//memset(tempAddr, 0, BUF_SIZE);
if(c_af==AF_INET){
@@ -233,7 +249,14 @@ void send_file_for_all_nodes(struct pollfd *fds, struct main_list_y_NODE_T *node
fprintf(stderr, "error inet_ntop v6 :errno=%d\n",errno);
}
}
#if 0
off_t offset = 0;
ssize_t ret_sendfile ;
while((ret_sendfile = sendfile(fds[(c_af==AF_INET6)].fd ,fd_file, &offset, BUF_SIZE))>0){
}
#endif
#if 1
if(sendto(fds[(c_af==AF_INET6)].fd,
buf_send, retread,
/*msgRet, len_msgRet,*/
@@ -246,8 +269,10 @@ void send_file_for_all_nodes(struct pollfd *fds, struct main_list_y_NODE_T *node
fprintf(stderr, "Error sending response to %s\n",tempAddr);
}else
printf("sending response to %s\n",tempAddr);
#endif
}
}
close(fd_file);
printf("fd=%d closed: filename=%s\n",fd_file,filename);
}
@@ -303,6 +328,10 @@ void y_get_fds_func(struct pollfd * fds, char * port, char * addrDistant){
close(fds[af].fd);
fds[af].fd=-1;
}
int flags = fcntl(fds[af].fd, F_GETFL);
flags |= O_NONBLOCK;
fcntl(fds[af].fd, F_SETFL, flags);
}
}
}
@@ -311,7 +340,7 @@ void y_get_fds_func(struct pollfd * fds, char * port, char * addrDistant){
}
void handler_(char * buf){
printf("%s\n",buf);
printf("debug:::::::::::::::::::::::::::handler: : %s\n",buf);
}
void *y_pollSocketsFunc(void *arg){
struct y_socket_t * argSock = (struct y_socket_t*)arg;
@@ -347,27 +376,35 @@ void *y_pollSocketsFunc(void *arg){
if(fds[af].revents && POLLIN){
remove_all_list_in_y_ptr_STRING(m_str);
memset(buf, 0, BUF_SIZE);
while((nread = recvfrom(fds[af].fd, buf, BUF_SIZE, 0,
while((nread = recvfrom(fds[af].fd, buf, BUF_SIZE, 0,
(struct sockaddr *)&(node.addr), &(node.addr_len))) == BUF_SIZE){
if(nread == -1)
fprintf(stderr,"error recvfrom\n");
else{
if(buf[nread-1]=='\n') buf[nread-1]='\0';
buf[nread]='\0';
y_ptr_STRING y_buf = create_y_ptr_STRING(buf, nread);
push_back_list_y_ptr_STRING(m_str, y_buf);
}
printf("debug: push_back_list_y_ptr_STRING of <%s>\n",buf);
printf("debug: nread: %ld vs BUF_SIZE :%d \n",nread, BUF_SIZE);
}
if(nread > 0 && nread < BUF_SIZE){
if(buf[nread-1]=='\n') buf[nread-1]='\0';
printf("debug: out nread: %ld vs BUF_SIZE :%d \n",nread, BUF_SIZE);
if(nread == -1)
fprintf(stderr,"error recvfrom\n");
else if(nread >= 0 && nread < BUF_SIZE){
if(nread && buf[nread-1]=='\n') buf[nread-1]='\0';
buf[nread]='\0';
printf("msg: %s\n",buf);
y_ptr_STRING y_buf = create_y_ptr_STRING(buf, nread);
push_back_list_y_ptr_STRING(m_str, y_buf);
printf("debug: out push_back_list_y_ptr_STRING of <%s>\n",buf);
}
char *temp_all_buf=NULL;
/*size_t total_buf = */ copy_list_y_ptr_STRING_to_one_string(temp_all_buf , m_str);
/*size_t total_buf = */ copy_list_y_ptr_STRING_to_one_string(&temp_all_buf , m_str);
//printf("msg : %s\n",buf);
//printf("msg : %s\n",temp_all_buf);
///
///
y_socket_t/test/is_good.c
+2 -2
View File
@@ -25,7 +25,7 @@
TEST(first){
struct y_socket_t *firstSock = y_socket_create("1600");
struct y_socket_t *firstSock = y_socket_create("1600", 2);
LOG("create y_socket_t in port |%s|\n",firstSock->port);
y_socket_free(firstSock);
@@ -164,7 +164,7 @@ TEST(searchNode){
TEST(pollThread){
struct y_socket_t *argS=y_socket_create("1600");
struct y_socket_t *argS=y_socket_create("1600", 2);
pthread_t pollTh;
pthread_create(&pollTh, NULL, y_pollSocketsFunc, (void*)argS);