Comments by venkat28vk (Top 154 by date)

@ Garth. I am told to use only tcp/ip. It is because of that, i am using this protocol. Is there any ways to achieve the solution for the above with the code i have given. If so let me know.

@sergey. I am using Ubunutu. I need to display only file names. The files will be sent from php to C using tcp/ip, i need to display only the file names of html and text files. Can you give me some code on this.

@ Sergey. I am sorry for the above. The main objective is to list text files and html files in a folder using C code. How can i achieve the above?

I want to send data from client to server and the server has to reply back the same data. This should keep on iterating until i am terminating the process. How to achieve this in the above code

I like to send and receive data from client to server, and the server has to receive the data and send it back to client and moreover after this the client and the server has to be in open state(ready to transfer the data again)...this cycle should repeat. This is the scenario i want to achieve, how can i achieve it from my above code.

@Richard. Can i achieve it through command line arguments int main(int argc, char argv[]) or by using multiple threads as per you said.

@ richard. How can i read multiple files at concurrent time and send it to server in tcp/ip?

@ Giri. I am able to read a single text file using fopen and send it to the server. Now i need to try with multiple files.

No, i am told to use only in tcp/ip, is there any way for this?

I have changed with what u have said, but still i am not able to send and receive data.

@pallini. I need to read a file and send it to the client and the client has to send the same file back to server, this is the actual requirement. As far as i have done is just the connection is established, but not able to read and write data.

The connections are established, but the problem here is i am not able to send and receive the file.

I have used java code to create a UI and i have linked it with C code.

Hi,
But when i am running C the code in my system, i am not facing any errors. How can i overcome this.

But when i run C program, i am able to send and receive files of any size. But when compared with java code in UI Creation, i am facing lot of issues.

I have just created a UI with send and exit button and in the send button code i have given one stmt on button click, also is there any way to compile the code before running it?

No such file or directory i am getting

Could you kindly assist me in developing Qt based application for C code because i am new to this and i need someone who has knowledge on the same.

I have just now tried to create a simple UI using Qt Creator, but i am facing some error in this. And one more doubt is Qt creator is enough or do i need any other packages. I am also getting an error stating that "error No such file or directory".

Can i use this to develop a UI for C program, because i have developed a set of codes in C and i need to develop a UI for various operations.

And moreover i am able to send a file to java in single directional way via tcp/ip with no data loss and java is able to receive it. I don't understand why when file is send from java to C, i am having data loss

I am able to receive a file from java to C via tcp/ip and send the same file back to java,i have given the same code but with slight change in function calling and it is working fine with no data loss or any other interruptions.

Are there any other ways to achieve it, because i have tried with all the options. Could you kindly say me how i can resolve this problem.

I have tried i am just sending a few characters, from java but in the receiving end i am getting like, what i have stated above.

And moreover is it really mandatory to use malloc, because i have commented it.

I have tried with pBuf in the recv function, but still i am getting the same output.

What can i give instead of pBuf to get my required output. And thanks for the answer provided on flag.

I tried as per you said but i am not getting the required output.And moreover in the above syntax i hope the buffer variable should be a pointer and is it really imp to give flag as 0 what if flag value is 1? Say your thoughts on this?

I have tried out with recv also, but still i am getting the same error. Just to state that i have tried with all options i have put the stmt in the code.

When i print the statements i am also getting the read size value as -1 in receive function, which indicates no data is written into the file.

I am receiving the file sent from java, but the values are displayed as following "
\00\00\00\00\00\00\00c@\00\00\00\00\009z\A2\FD\00\00\B3H\AA\84\00\00\00\94ބ\00\00 \00\00\00\00\00\00\00c@\00\00\00\00\00r\9F\A9\84"

Hi Frank, can you lend me help for the above problem, because i am facing lot of difficulties and i am able to receive text file with few characters and null data. Give me your valuable suggestions for this.

is all other part of code is correct, and do i need to change the file mode from w to a for saving the file.

I have tried read size equal to zero, but it is exiting out of the loop and no data are displayed. Could you kindly say me another possible way to resolve this.

Hi Frank,

I need your guidance for another time. This time it involves, C has to send a file to java and java has to accept the file and it should revert the same file to C. The fact is i am able to receive the file, but there is no data in it. Kindly assist me in resolving this issue.

I have given the code in the following link,

http://www.codeproject.com/Questions/1010219/How-To-Send-Data-From-C-To-Android-Using-Tcp-Ip-An?arn=0

Hi frank

I am able to send data to android, but when android is reading the data and sending the same data to C through TCP/IP, i am not able to receive it. I am giving the code for reference, just suggest some ideas.

Sending code:


int send_text( long int socket)
{

FILE *text;
char a[50];
long int size, read_size, stat, packet_index;
char send_buffer[1024], read_buffer[1024];
int wrt=0,sock_fd;
packet_index = 1;
int i=0;

text = fopen("/home/sosdt009/Desktop/character.txt", "r");

if (text == NULL)

{

printf("Error Opening text File");
exit(-1);

}

printf("Getting text Size\n");
fgets(a,2918992,text); //gets(a);
fseek(text, 0, SEEK_END);
size = ftell(text);
fseek(text, 0, SEEK_SET);
printf("Total text size: %li \n", size);
fgets(a,2918992,text); //gets(a); //

//Send text Size

printf("Sending text Size\n");
fgets(a,2918992,text); //gets(a);
send(socket, (void *)&size, sizeof(size), 0);

printf("Sending text as Byte Array\n");
fgets(a,2918992,text); //gets(a);

/*do

{
printf("Ready for sending:\n");
gets(a);
//Read while we get errors that are due to signals.
stat = recv(socket, read_buffer, 1024, 0);
printf("Bytes read: %li \n",stat);
gets(a);

}

while (stat < 0);
printf("Received data in socket:\n");
gets(a);
printf("Socket data: %s\n", read_buffer);
gets(a); */

while (EOF!=text)
{

//Read from the file into our send buffer
printf("Ready for sending \n");
read_size = fread(send_buffer,1,sizeof(send_buffer),text);
printf("The size of send buffer %c \n:", sizeof(send_buffer));
printf("The read size value is: %li \n", read_size);
fgets(a,2918992,text); //gets(a);

//Send data through our socket

do
{
printf(" Multiple loop \n");
//for(i=0;i<read_size;i++)
{
="" printf("send="" value:="" %c="" \n",send_buffer[i]);
="" }
="" stat="send(socket," send_buffer,="" read_size,="" 0);
="" printf("the="" send="" size="" value="" is:="" %li="" \n",="" size);
="" read="" read_size);
="" printf("="" multiple="" loop1="" \n");

="" }="" while="" (stat="" <=""
="" printf("packet="" %li,="" sent="" bytes.\n",="" packet_index,="" gets(a);
="" return="" -1;

="" packet_index++;

="" zero="" out="" our="" buffer

="" bzero(send_buffer,="" sizeof(send_buffer));

="" }

="" receive_text(socket);
="" fclose(text);
="" close(socket);
="" printf("text="" successfully="" send:="" \n");
="" fgets(a,2918992,text);="" 0;

}=""


receiving="" code:

int="" receive_text(int="" new_socket)
{
="" long="" int="" buffersize="0," recv_size="0," write_size;
="" errno;
="" file="" *text;
="" char="" str[50]="/home/sosdt009/Desktop/" ;
="" *pbuf,a[50],filename[50],*filename2;
="" ("enter="" filename:\n");
="" gets(filename);
="" printf("%s",filename);
="" strcat(str,filename);
="" filename2="fopen(str,"w");
" printf("filename2:\n");
="" gets(filename2);="" text="fopen(str,"w");
" if="" (text="=" null)
="" puts("error="" has="" occurred.="" could="" not="" be="" opened="" -1;
="" loop="" we="" have="" received="" the="" entire="" yet
="" (1)
="" {="" ioctl(new_socket,="" fionread,="" &buffersize);="" check="" to="" see="" there="" is="" data="" from="" socket
="" printf("buffersize="" ioctl="" %ld="" \n",buffersize);
="" gets(a);="" (buffersize=""> 0)
{
printf("Buffersize value is: %ld \n", buffersize);
gets(a);
pBuf = malloc(buffersize);
if (!pBuf)
{
fprintf(stderr, "Memory Error. Cannot allocate!\n");
gets(a);
exit(-1);
}
read_size = recv(new_socket, pBuf, buffersize, 0);
printf("Read size value is: %li \n", read_size);
gets(a);
if (read_size < 1)
{
printf("%s", strerror(errno));
gets(a);
goto free;
}

//Write the currently read data into our text file

write_size = fwrite(pBuf, 1, read_size, text);
free(pBuf);
printf("Writesize value is: %li \n", write_size);
gets(a);

//Increment the total number of bytes read

recv_size += read_size;
printf("Receivedsize value is: %li

Suggest me on this.

could you show me some sample code of it, for my better understanding.

The problem is after c sends the data, the code does not wait for java to send it keeps on iterating, once i stop the program manually(ctrl+c), i can see in java the number of bytes written or sent to C, but for that the socket has to be open, that is where i am facing the problem.

Just check for the code

int receive_text(int new_socket)
{
long int buffersize = 0, recv_size = 0, size = 0, read_size, write_size;
int errno;
FILE *text;
char *pBuf,a[50],filename[50],*filename2;
printf("Enter Filename:\n");
gets(filename);
printf("%s",filename);
strcat(str,filename);
filename2 = fopen(str,"w");
printf("Filename2:\n");
(filename2);
text = fopen(str,"w");
if (text == NULL)
{
puts("Error has occurred. Text file could not be opened \n");
gets(a);
return -1;
}

//Loop while we have not received the entire file yet

while (1)
{

ioctl(new_socket, FIONREAD, &buffersize);//We check to see if there is data to be read from the socket
printf("Buffersize ioctl value is %ld \n",buffersize);
gets(a);
if (buffersize > 0)
{
printf("Buffersize value is: %ld \n", buffersize);
gets(a);
pBuf = malloc(buffersize);
if (!pBuf)
{
fprintf(stderr, "Memory Error. Cannot allocate!\n");
gets(a);
exit(-1);
}
read_size = recv(new_socket, pBuf, buffersize, 0);
printf("Read size value is: %li \n", read_size);
gets(a);
if (read_size < 1)
{
printf("%s", strerror(errno));
gets(a);
goto free;
}

//Write the currently read data into our text file

write_size = fwrite(pBuf, 1, read_size, text);
free(pBuf);
printf("Writesize value is: %li \n", write_size);
gets(a);

//Increment the total number of bytes read

recv_size += read_size;
printf("Receivedsize value is: %li \n", recv_size);
gets(a);
}
if((buffersize == 0) && (recv_size != 0))
{
goto free;
}
}
free:

//close(new_socket);
fclose(text);
send_text(new_socket);
printf("Text successfully received: \n");
gets(a);
return 0;

}


The code has been put for further reference

I am receiving video file from Android to C using TCP/IP protocol. In the initial phases there were data loss when video file was sent, i rectified the error by giving gets() and now there is no data loss. How did gets() solved the error.

Consider a scenario where client is sending n number of data and how can i accept all the files or i can add them in queue?

ok. Thanks a lot for helping me, through the way.

Hi Frank, still i am getting the same error as segmentation fault(core dumped)

void CleanInput(char *p)
{
int i;
char PATH_MAX;
for (i = 0; i < PATH_MAX; i++)
{
if (!p[i] || p[i] == '\n')
{
p[i] = '\0';
break;
}
}
}

int receive_text(int new_socket)
{
long int buffersize = 0, recv_size = 0, size = 0, read_size, write_size;
int errno;
FILE *text;
char *pBuf,*filename;
char a[50];
char PATH_MAX;
char Fullfilename[PATH_MAX];
FILE *fp;
printf("Enter Filename: %s \n",filename);
fgets(filename, PATH_MAX, fp); //Read filename from user
CleanInput(filename); //Remove \n and close string

//Build a full filename with path

char Filename[PATH_MAX];
strcpy(filename, "/home/sosdt009/Desktop/received.txt,r");
strcat( Fullfilename,Filename);

//Open file with fully qualified name and read the first line

fp=fopen(Fullfilename, "r");
char filename2[PATH_MAX];
fgets(filename2,PATH_MAX-1, fp);
fclose(fp);
CleanInput(Filename); //Remove \n and close string

//Print filename2, then open and read file2

printf("Filename2: %s \n", filename2);
fgets(filename2, PATH_MAX-1, fp);
CleanInput(Filename); //Remove \n and close string
text = fopen(filename2, "w");
if (text == NULL)
{
puts("Error has occurred. Text file could not be opened \n");
fgets(filename2, PATH_MAX-1, fp);
return -1;
}

//Loop while we have not received the entire file yet

while (1)
{

ioctl(new_socket, FIONREAD, &buffersize);//We check to see if there is data to be read from the socket
printf("Buffersize ioctl value is: %ld \n",buffersize);
fgets(filename, PATH_MAX, fp);
if (buffersize > 0)
{
printf("Buffersize value is: %ld \n", buffersize);
fgets(filename, PATH_MAX, fp);
pBuf = malloc(buffersize);
if (!pBuf)
{
fprintf(stderr, "Memory Error. Cannot allocate!\n");
fgets(filename, PATH_MAX, fp);
exit(-1);
}
read_size = recv(new_socket, pBuf, buffersize, 0);
printf("Read size value is: %li \n", read_size);
fgets(filename, PATH_MAX, fp);
if (read_size < 1)
{
printf("%s", strerror(errno));
fgets(filename, PATH_MAX, fp);
goto free;
}

//Write the currently read data into our text file

write_size = fwrite(pBuf, 1, read_size, text);
free(pBuf);
printf("Writesize value is: %li \n", write_size);
fgets(filename, PATH_MAX, fp);

//Increment the total number of bytes read

recv_size += read_size;
printf("Receivedsize value is: %li \n", recv_size);
fgets(filename, PATH_MAX, fp);
}
if((buffersize == 0) && (recv_size != 0))
{
goto free;
}
}
free:

close(new_socket);
fclose(text);
printf("Text successfully received: \n");
fgets(filename, PATH_MAX, fp);
return 0;

}


this is the entire source code, and when android is sending some data the connection is opened and after that enter file name and segmentation fault error is shown.

I am getting error, once the code is compiled.

Enter Filename:
Segmentation fault (core dumped)

Frank the reason for the error is i cant assign a file path to a character it has to be assigned to a file pointer and using fopen with specified mode.

I have given the code for reference
void CleanInput(char *p)
{
int i;
char MAX_PATH;
for(i=0;i<=(MAX_PATH);i++)
{
if (!p[i] || p[i]=='\n')
{
p[i] = '\0';
break;
}
}
}

int receive_text(int new_socket)
{
long int buffersize = 0, recv_size = 0, size = 0, read_size, write_size;
int errno;
FILE *text;
char *pBuf,*filename;
char a[50];
char PATH_MAX;
char Fullfilename[PATH_MAX];
FILE *fp;
printf("Enter Filename:\n");
fgets(Fullfilename, PATH_MAX, fp); //Read filename from user
CleanInput(Fullfilename); //Remove \n and close string

//Build a full filename with path

char Filename[PATH_MAX] = "/home/sosdt009/Desktop";
strcat( Fullfilename,Filename);

//Open file with fully qualified name and read the first line

fp=fopen(Fullfilename, "r");
char filename2[PATH_MAX];
fgets(filename2,PATH_MAX-1, fp);
fclose(fp);
CleanInput(Filename); //Remove \n and close string

//Print filename2, then open and read file2

printf("Filename2: %s \n", filename2);
fgets(filename2, PATH_MAX-1, fp);
CleanInput(Filename); //Remove \n and close string
text = fopen(filename2, "w");

still i am getting the same error

char Filename[MAX_PATH] = "/home/sosdt009/Desktop";

It is already like that only

error: variable-sized object may not be initialized
char Filename[MAX_PATH] = "/home/sosdt009/Desktop";

This is the only error i am getting.

I have resolved the first error by assigning a condition. Only the second error is left out.

can i have the source code you have given early , because the question for the above code is closed.

Hi Frank in the latest code i have posted

printf("Enter Filename:\n");
gets(filename);
filename2 = open("/home/sosdt009/Desktop", && filename);
printf("Filename2: %s \n", filename2);
gets(a);
text = fopen(filename2, "w");

I have edited all the changes as per you said, but there are two errors caused while running the program

1)error: expected expression before ‘)’ token
for(i=0; i<max_path>)
2) error: variable-sized object may not be initialized
char FullFilename[MAX_PATH] = "/home/sosdt009/Desktop";

i have tried by various means ,but i could not solve this.How to resolve this issue.

I will receive a file(ie text, audio)and store the file into a string and again the read the string and display it as output in another string.

I have already tried with tar -xvf command in command prompt,but it is not working.Is there any possibility through the code.

Also i have tried with multiple sets of file transfer size like above 2 MB, 20 KB file, but the end result is whatever the file maybe there is some data loss happening.

I am trying to send a text file from Android to C using TCP/IP Protocol. If Android is sending a text file i am able to receive the text file, but not completely(there is a loss of bytes in the received text file). So i thought of zipping the text file and sending to C, where i can extract the file.

Kindly look for my updated question.

And moreover i shall add some debugging statements to it.

Yes the sending program has sent all the data, because once all the data are sent they will get a confirmation on their screen stating that the process has been done and the file is sent.

Moved to question [rjm]

There are no errors in c code, problem is i have checked by transmitting a single byte by byte from android to C, but still there are some loss at the last of the file.

The problem is when android is sending a file below 1 MB i am not able to receive the file, and the received file size is zero, But if the file size is above 1MB i am able to receive the file with data loss(mismatch in bytes). How to overcome this.

Hi, thanks for the help i am able to transfer text, image, audio and video files between two systems without data loss. Thanks for the help provided.

My system is Ubuntu and the system i am transferring all the data is also Ubuntu. The problem is when i send the images, the receiver is able to receive the image, but when i open the image, i am getting an error stating that "the image file could not be opened" i have tried changing the format also from .jpg to .png. But still the image is not working between two systems. The same happens for video also.

I am just sending a file of size 2-5 MB, in image and also video but that it not working. I am able to receive the file but it is not playing.

Everything is working fine now. Thanks for the help you have provided. I am able transfer audio files between two systems. Thanks a lot for what you have given. I have next tried with the images and video, the data is getting transferred but the file is not playing and in image there is an error message shown, when the image is opened in the received side. What could be the causes of errors?

I tried the above code between two different systems as client and server, but still i am not able to see the file in the desired path. Are there any other changes to be made.

how can i transfer the file into small chunks, because though i am sending a complete file, in networking all the files are transferred as a small packets or chunks. Can i use strtok() to achieve this?

When i run the above code in two different machines i get no errors and i don't find the file.

just run the server and client code by changing the path name and enabling port no in your system. you shall get a clear picture.

similar to the code above instead of strcpy i am using send and receive function to read and write data in client server communication.

In the code, i have added the "read and write mode" to send and receive file between client and server.

I shall share the audio code for both client and server.

I am trying to send a audio file from my system to another system. There is no error but the file is not written there.

As per you said the connection has been established, but the file is not getting transferred. Could you say what could be the problem and are there any issues regarding firewall?

You are saying to specify the ip address of the server in client code and in server address can i put it as INADDR_ANY or do i need to change to client ip address

i have tried ping also, everything is working fine.

Is the code correct? I am running the server code in my system and the client code in another system, but i am facing problems in this.

Yes i have used like that, connect in client and listen in server for connection establishment.

I have added the code for further reference, could you share me your ideas for resolving my issue.

I am trying to run client server communication using tcp/ip in two different systems, but i am facing a problem in connection establishment. I have added the code, could you skim through it and let me know what has to be changed.

I tried by disabling the firewall, but it is not working.

i shall try, thanks

I have done the coding, but when running in my system i able to read and write data, but when i run the code between two different systems i am facing a problem in connection establishment. What are the causes of errors?

I have tried the code and i am facing the problem in establishing connection from server to client.

i have tried with the code, from my system to my friends system in LAN, but it is not working. Could you assist me in resolving this issue.

I have used write as per you said, but still it is not working. Are there any other way for resolving this?

what can i do? Can you suggest how to do achieve this

I have done what you have said, for example i have sent an audio file from android to C using tcp/ip protocol. I have received the audio file but with some data loss in it. For ex 4 bytes is sent i am able to receive 4 bytes but there is a mismatch in the bytes when i check the properties. But the file is playing good how to overcome the few data loss.

yes just 4kb files, but the problem here is i am able to receive audio file greater than 4 MB but when it comes to sending an entire text file i am facing issues.

As per your requirements, i have given the code and i hope you can get an idea of what the code is... now i am able to receive the text file but sometimes only partial data is transferred. Could you provide me some suggestions.

How do you think a question has to be posted, by your comments i feel that my question should be represented in a better way. Could you say how to put more effective questions.

Just look for the code i have added it.

I am sending a text file of size 1kb from Android, bu i am able to receive only the half of it...

I would like to share my code for your reference, if you would be interested in helping me by resolving this issue.

I am sending through sockets only, the problem is i am able to receive only half of the file.

If you want i can share the code

Hi
I have tried all the option as you have said...i am able to run the code in my local machine i.e reading from server and writing into client. But when it is sent from Android i am facing the above problem

I am using TCP/IP

I want to send a complete text file from C to Android.. Do you have any idea of how you can achieve it.

I have tried for sending audio between client and server but i am not able to get the proper result...can you suggest me few links for further references.

i have developed the code for client and server, and i like to share with you, could you just skim through it and give your feedback

ok... do i need to serialize the data into streams for the required output?

could you share any links or some kind of references

Hi Richard, I am able to receive images of very small size less than 5kb from android to C via TCP/IP, if i go for bigger size images i am not able to receive. Kindly do share your feedback

I want to know how it working fine for few images and it does not work for the rest. If there is an error, i want to know how only certain images face the problem..

And one more thing the android team is also facing similar problem like this... they are encountering a system error when new images are sent to C via TCP/IP. suggest me to resolve this issue.

Hi Richard i am able to receive images from android to C via TCP/IP. But the problem is i am able to receive only certain set of images, if other img are sent i am getting an error stating that

"Connection accepted
Error has occurred. Size less than or equal to 0"

this is the error i am getting could you share your idea on how to overcome this

and i want to thank you for providing your greatest support till the end thanks a lot for your help

yes i have tried all the possibilities.. but again i will look through the code

and moreover i have also used the same name in the receiving end also with the same extension.

i am receiving .jpg file in the name i have created

if you don't mind can you come to skype so that we can have a better conversation without taking so much of time and if so ping me your skype id

.jpg only i used it for testing purpose. I just want to check the size of the image i receive, that is the reason i changed it to .png

kindly revert the changes to me if you find anything in the improved code

kindly go with the original post just check whether i have used it correct or not

for your better understanding and also know the solution for this problem

can i share the full code

yeah they are sending jpeg file, i have also tried with .png both have not worked

i have tried with "a", "w+" also but still i am not able to receive the image

richard i have tried every possibilities but still i am struggling here, is it possible to try with UDP will it work?

the core part is already given, and you have said your valuable comments and i have added it, even after that too i am unable to receive the image kindly guide me in resolving this issue.

When i am opening that image sent from android to C i am getting 'Could not load image 'newimg.jpg' Error interpreting JPEG image file (Improper call to JPEG library in state 200) this is the error i am getting when i open the received file

can i post my entire code for better understanding

after compiling this code i have got an error after i have opened the img

Error interpreting JPEG image file (Improper call to JPEG library in state 200) what does this implicate,

char* fr_name = "/home/sosdt011/Desktop/newimg.jpg";
FILE *fr = fopen(fr_name, "a+");
if(fr == NULL)

{

printf("File %s Cannot be opened file on server.\n", fr_name);

}

else

{

//bzero(revbuf, LENGTH);
int fr_block_sz = 0;
while((fr_block_sz = recv(nsockfd, revbuf, LENGTH,0)) > 0)

{

int write_sz = fwrite(revbuf, 1 , sizeof(fr_block_sz) , fr);
if(write_sz < fr_block_sz)

{

error("File write failed on server.\n");

}

bzero(revbuf,LENGTH);
if (fr_block_sz == 0 )

{

break;

}

}

if(fr_block_sz < 0)

{

if (errno == EAGAIN)

{

printf("recv() timed out.\n");

}

else

{

fprintf(stderr, "recv() failed due to errno = %d\n", errno);
exit(1);

}

}

printf("Ok received from client!\n");
fclose(fr);

}

success = 1;
close(nsockfd);
printf("[Server] Connection with Client closed. Server will wait now...\n");
while(waitpid(-1, NULL, WNOHANG) > 0);


could you guide me in sorting this out

the code is replica of tcp/ip communication, for any reference if you need i shall give u the code...

ok thanks a lot i shall try that and see

Hi george thanks for the answer you have provided, do you have any idea how does it work in unix because i am not using windows, i am using ubuntu so you must be aware how the code differs to the various environment.... and i would be glad if you could provide a sample code for the above

i am sorry for not specifying correctly... you are right i am using sockets to send and receive images. can this be achieved in the above

hi
i am using tcp/ip programming, i think you must be aware of sending and receiving text between a server and client, similarly i have to send and receive images i hope this clarifies your doubt...

do you have any idea about this, if so kindly share with me

the ultimate cause is i shall receive set of data from android, for every data i receive i must send a ack stmt to android stating that data has been received! i am able to receive data but how to send ack stmt for every single data?

ok, is there any keyword or function for sending?

Hi,

I need to send a ack message to the server stating that i have received data and how to achieve this in the code....could you show me some sample...for better understanding if you want i can share my code

#include<stdio.h>
#include<stdlib.h>
#include<unistd.h>
#include<string.h>
void main( )
{
FILE * fp;
char name[300],city[300],dept[300];
/* fp=fopen("sampledata.ods", "r");*/
if(!fp) {
printf("Failed to open!\n");
exit(1);
}
fp=fopen("/home/sosdt011/Desktop/sampledat.ods","r");

fscanf(fp,&name);
/* fp=fopen("/home/sosdt011/Desktop/sampledat.ods","r");*/

fprintf(stdout,"First Line is %s\n", *name);
fclose(fp);
}


This is the code and i am getting segmentation fault core dumped can someone help me to solve this

Can I have the syntax to open the text(.odt file in ubuntu)

how to open a text file(ubuntu it is .odt) could you specify me the syntax